СТАНОК ДЛЯ ПЛЕТЕНИЯ ПОСТОЯННОГО УГЛА

Изобретение относится к области ткачества, в частности технических тканей, в которых, по меньшей мере, одна уточная нить ткани формирует постоянный угол, например выпуклый. Ткацкий станок согласно изобретению подходит для плетения каркасов усиленных композитных структур, в целях оптимизации, позволяющей уменьшить размер, а также позволяющий переплетением нитей образовывать объемные углы, в трех измерениях, где это необходимо. Ткацкий станок (20), который содержит устройства, разработанные для протягивания нитей (26В), для вставления утка (64), и для формирования текстильного зева, позволяющие сформировать непрерывный угол или вершину угла (30) нитью (34) во время переплетения. Ткацкий станок, предпочтительно, также содержит систему смещения в вертикальном направлении (66), так, чтобы было возможно соткать трехмерную конструкцию, нити которой непрерывны между гранями и на уровне краев. 14 з.п. ф-лы, 12 ил.

Способ формирования искривленной тканой заготовки

Изобретение относится к способу формирования искривленной тканой заготовки. Способ включает установку по меньшей мере одного комплекта сопрягаемых зажимов на волокна ткани заготовки, выходящей из ткацкого станка, при этом сопрягаемые зажимы указанной по меньшей мере одной пары зажимов захватывают между собой по меньшей мере часть ткани заготовки, причем геометрия указанного по меньшей мере одного комплекта зажимов обеспечивает увеличение длины волокон путем вытягивания по меньшей мере некоторых волокон, выходящих из ткацкого станка, и придание ткани заготовки искривленной формы. При этом волокна являются непрерывными по всей длине ткани заготовки. Изобретение позволяет обеспечить способ ткачества заготовок с волокнами дополнительной длины таким образом, что готовая структура может быть искривлена и может иметь непрерывное упрочнение волокнами в направлении кривизны. Разная длина по ширине ткани заготовки обеспечивает возможность формирования искривленной части по длине ткани без разрезания ...

СОЕДИНЯЕМАЯ ШВОМ ТЕХНИЧЕСКАЯ ТКАНЬ

Техническая ткань соткана из продольных и поперечных нитей, причем продольные нити являются многокомпонентными нитями, включающими множество одиночных волокон нити и, по меньшей мере, одно термоплавкое волокно из термопластичного материала. Это, по меньшей мере, одно термоплавкое волокно из термопластичного материала имеет более низкую точку плавления, чем одиночные волокна многокомпонентной нити. После термообработки многокомпонентные нити становятся жестче и образующие их одиночные нити скрепляются вместе термопластичным материалом указанной, по меньшей мере, одной термоплавкой нити. Технический результат - сохранение ориентации и целостности соединительных петель, необходимых для соединения ткани. 24 з.п.ф-лы, 5 ил.

ЗАГОТОВКА И МОНОБЛОЧНАЯ ЛОПАТКА ДЛЯ ГАЗОТУРБИННОГО ДВИГАТЕЛЯ

Изобретение относится к волокнистой заготовке для лопатки газотурбинного двигателя, полученной посредством моноблочного трехмерного тканья. Согласно изобретению заготовка содержит первый продольный участок, предназначенный для формирования ножки лопатки, второй продольный участок, продолжающий первый продольный участок и предназначенный для формирования части пера, и первый поперечный участок, проходящий поперечно от соединения между первым и вторым продольными участками и предназначенный для формирования первой площадки. При этом первый поперечный участок образован по меньшей мере частями первого и второго свободных полотнищ, загнутых друг на друга. Причем первое свободное полотнище и первый продольный участок и второе свободное полотнище и второй продольный участок выполнены путем совместного тканья с разъединением. При этом на соединении между первым и вторым продольными участками имеется перекрещивание слоя так, чтобы нити первого свободного полотнища были продолжены во втором продольном ...

СПОСОБ ИЗГОТОВЛЕНИЯ КЕРАМИЧЕСКОЙ ШУМОЗАЩИТНОЙ ПАНЕЛИ ИЗОГНУТОЙ ФОРМЫ

Изобретение относится к области шумозащитных панелей и касается способа изготовления керамической шумозащитной панели изогнутой формы. Способ включает следующие операции: пропитку волоконной структуры, определяющей сотовую структуру, смолой-прекурсором керамики; полимеризацию смолы-прекурсора керамики при удержании волоконной структуры на устройстве, форма которого соответствует изогнутой форме окончательно получаемой сотовой структуры; прикрепление к сотовой структуре первой и второй обшивок; каждая из обшивок представляет собой волоконную структуру, пропитанную смолой-прекурсором керамики, и обе обшивки прикрепляются к указанной сотовой структуре до или после полимеризации смолы указанных обшивок; пиролизацию собранного узла, включающего в себя сотовую структуру с первой и второй обшивками; и уплотнение указанного узла посредством химической инфильтрации в паровой фазе. Изобретение обеспечивает создание шумозащитной панели из композиционных материалов с керамической матрицей, имеющей ...

СПОСОБ ИЗГОТОВЛЕНИЯ ЛОПАТКИ ТУРБОМАШИНЫ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА, ЛОПАТКА ТУРБОМАШИНЫ И ТУРБОМАШИНА

При изготовлении лопатки турбомашины из композиционного материала, содержащего уплотненную матрицей волокнистую арматуру, выполняют трехмерное ткачество цельной волокнистой заготовки. Придают форму волокнистой заготовке с получением цельной волокнистой преформы, имеющей первую, вторую и третью части. Первая часть образует преформу хвостовика и пера лопатки, вторая часть образует преформу внутренней полки лопатки и/или гребешков наружной полки лопатки, а третья часть образует преформу арматуры внутренней полки лопатки и/или обтекаемых выступов наружной полки лопатки. Затем уплотняют волокнистую преформу матрицей с получением лопатки из композиционного материала, имеющей волокнистую арматуру, образованную преформой и уплотненную матрицей. Другое изобретение группы относится к лопатке турбомашины из композиционного материала, содержащего полученную трехмерным ткачеством нитей и уплотненную матрицей волокнистую арматуру, включающей первую часть, составляющую единое целое со второй и третьей ...

УСИЛЕНИЕ ДЛЯ П-ОБРАЗНЫХ ЗАГОТОВОК С ВЫТАЧКАМИ

Изобретение относится к усиленной заготовке с вытачками, способу усиления трехмерной П-образной или Т-образной заготовки, к трехмерной композитной структуре. Усиленная заготовка с вытачками содержит трехмерную П-образную или Т-образную заготовку, имеющую по меньшей мере один компонент с вытачками. Ткань с расположенными в заданном направлении нитями имеет ширину, длину, первую лицевую поверхность и вторую лицевую поверхность, разделенные толщиной. Первая лицевая поверхность ткани с расположенными в заданном направлении нитями прикреплена к имеющему вытачки компоненту заготовки. Изобретение обеспечивает повышение физико-механических свойств изделий. 3 н. и 24 з.п. ф-лы, 10 ил.

ЦЕЛЬНЫЙ СОПЛОВОЙ ЭЛЕМЕНТ ТУРБИНЫ, СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ, СОПЛО ТУРБИНЫ, СОДЕРЖАЩЕЕ МНОЖЕСТВО ТАКИХ ЭЛЕМЕНТОВ, И ГАЗОВАЯ ТУРБИНА, СОДЕРЖАЩАЯ ТАКОЕ СОПЛО

Сопловой элемент турбины из композиционного материала, содержащего волокнистое армирование, уплотненное керамической матрицей, включает участки внутреннего и внешнего оснований и, по меньшей мере, одну лопатку, присоединенную к ним обоим. Участки оснований простираются на каждой стороне их зон соединения с лопаткой, а волокнистое армирование содержит волокнистую структуру, сплетенную посредством трехмерного или многослойного плетения и обладающую непрерывностью во всем объеме соплового элемента и по всей периферии одной или каждой лопатки. При изготовлении соплового элемента турбины создают плетением цельную волокнистую заготовку, содержащую в продольном направлении, по меньшей мере, один шаблон, включающий в себя первый сегмент, образующий заготовку для преформы лопатки, второй сегмент, продолжающий первый сегмент на одном его продольном конце и образующий два крыла, обращенные друг к другу, и третий сегмент, продолжающий первый сегмент на другом его конце и образующий два крыла, обращенные ...

ЛОПАТКА ТУРБИННОГО ДВИГАТЕЛЯ С ВСТРОЕННЫМ ХВОСТОВИКОМ, ИЗГОТОВЛЕННАЯ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА

При изготовлении лопатки турбинного двигателя из композиционного материала изготавливают волокнистую заготовку в виде единого цельного элемента посредством многослойного тканья. Волокнистая заготовка в продольном направлении, соответствующем продольному направлению изготавливаемой лопатки, содержит: первый комплект слоев нитей, для формирования пера, и второй комплект слоев нитей, связанных между собой для формирования хвостовика лопатки. Нити первого комплекта слоев нитей не связаны с нитями второго комплекта слоев нитей, при этом первый комплект слоев нитей пересекается нитями второго комплекта слоев нитей во второй части заготовки. Волокнистой заготовке придают форму для получения цельной волокнистой преформы, имеющей первую часть, образующую преформу пера, и вторую часть, образующую преформу хвостовика лопатки. Затем преформу уплотняют матрицей для получения лопатки из композиционного материала, содержащего волокнистый армирующий каркас, образованный преформой и уплотненный матрицей ...

ВОЛОКНИСТАЯ СТРУКТУРА С ОБЪЕДИНЕНИЕМ ПРОПУСКОВ

Изобретение относится к волокнистой структуре, содержащей заготовочный участок, выполненный в виде единой детали посредством трехмерного тканья между первым множеством слоев нитей и вторым множеством слоев нитей, при этом заготовочный участок соответствует всей или части заготовки волокнистого усиления для детали из композиционного материала. За пределами заготовочного участка волокнистая структура содержит один или несколько слоев двухмерной ткани, при этом каждый слой двухмерной ткани объединяет нити одного и того же слоя, принадлежащего по меньшей мере к первому множеству слоев нитей, находящихся за пределами заготовочного участка. 3 н. и 13 з.п. ф-лы, 9 ил.

ЛОПАСТЬ СО ВСТРОЕННЫМ КОМПОЗИТНЫМ ЛОНЖЕРОНОМ

Изобретение относится к области авиации, в частности к конструкциям турбовинтовых двигателей и воздушных винтов. Лопасть (10) содержит конструкцию с аэродинамическим профилем (20), содержащую две противоположные обшивки (21, 22), полученные посредством трехмерного плетения волокнистого армирующего материала (100), лонжерон (30), содержащий волокнистый армирующий материал, полученный посредством трехмерного плетения и уплотненный матрицей. Лонжерон содержит первую часть (31), выходящую за пределы указанной конструкции с аэродинамическим профилем и выполненную с возможностью соединения с приводной ступицей при вращении лопасти, и вторую часть, расположенную внутри конструкции с аэродинамическим профилем (20) между двумя обшивками (21, 22). Вторая часть (32) лонжерона (30) имеет толщину, по существу аналогичную толщине обшивок (21, 22) конструкции с аэродинамическим профилем (20). Волокнистый армирующий материал второй части (32) лонжерона (30) имеет такое же плетеное армирование, как армирование ...

ДЕТАЛЬ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА ОКСИД/ОКСИД С ТРЕХМЕРНЫМ УСИЛЕНИЕМ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

Изобретение относится к детали из композиционного материала оксид/оксид, которая содержит волокнистое усиление, образованное множеством слоев нитей основы и слоев нитей утка, связанных между собой посредством трехмерного тканья, при этом пространства между нитями усиления заполнены матрицей из жаропрочного оксида. Деталь отличается тем, что волокнистое усиление имеет переплетение тканья, выбранное среди следующих переплетений: интерлок, множественное полотняное, множественное сатиновое и множественное саржевое, и плотность переплетения по основе и по утку, составляющую от 4 до 20 нитей/см. Объемное содержание волокон в волокнистом усилении составляет от 40 до 51%. После формирования матрицы внутри структуры блоки матрицы имеют размеры, меньшие пятикратного максимального сучения нитей, что позволяет предупредить появление трещин в конечном материале детали. 2 н. и 5 з.п. ф-лы, 10 ил., 1 табл.

СПОСОБ ИЗГОТОВЛЕНИЯ ДЕТАЛИ И КОМПОЗИТНАЯ СПЛОШНАЯ ДЕТАЛЬ, ПОЛУЧАЕМАЯ С ПОМОЩЬЮ СПОСОБА

Изобретение относится к способу изготовления композиционной сплошной детали в виде армирующего ребра для лопатки турбомашины и содержащая армирующую структуру из трехмерно сплетенных керамических волокон и матрицу из металла или сплава. Композиционная сплошная деталь может быть использована для получения лопатки рабочего колеса турбомашины. Техническим результатом является упрощение изготовления армирующего ребра лопатки рабочего колеса турбомашины при сохранении высоких эксплуатационных характеристик. 3 н. и 2 з.п. ф-лы, 11 ил.

ВОЛОКНИСТАЯ АРМИРУЮЩАЯ СТРУКТУРА ДЛЯ ИЗДЕЛИЯ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА, ИМЕЮЩЕГО УЧАСТОК УМЕНЬШЕННОЙ ТОЛЩИНЫ

Предложена волокнистая структура (200) для армирования изделия из композитного материала, вытканного как цельное изделие посредством многослойного переплетения между первым множеством слоев (C-C) нитей и вторым множеством слоев (T-T) нитей. Волокнистая структура включает участок (204) уменьшенной толщины, на котором имеются: множество областей (210, 211, 212) удаления нитей на непрерывной поверхности, в каждой из которых прерываются нити (F; F; F) из слоя (C, C; C) нитей первого множества слоев нитей, лежащих под слоем нитей из первого множества слоев нитей, которые расположены на поверхности структуры; и множество областей (220, 221) удаления нитей на прерывистой поверхности, в каждой из которых прерываются нити (F; F) из слоя (C; C) нитей первого множества слоев нитей, расположенных на поверхности структуры, причем каждая прерванная нить (F; F) заменяется на поверхности структуры нитью (F; F) из слоя (C; C) нитей, лежащих под первым множеством слоев нитей. Нити слоев из второго множества ...

ВОЛОКНИСТАЯ СТРУКТУРА, ИМЕЮЩАЯ НИТИ С ПЕРЕМЕННЫМ НОМЕРОМ ПРЯЖИ

Изобретение относится к волокнистой структуре (S1) для армирования детали из композитного материала, причем указанная структура выткана в виде единого цельного куска многослойным переплетением между первым множеством слоев нитей (t, t, t), протяженных в первом направлении, и вторым множеством слоев нитей (10, 20, 30), протяженных во втором направлении. Второе множество слоев нитей включает по меньшей мере один слой нитей (10) с переменным весом, причем каждая нить с переменным весом выполнена в виде разделяемого комплекта индивидуальных нитей (11, 12), каждая из которых имеет определенный вес. Волокнистая структура (S1) включает по меньшей мере один участок (2G) с уменьшенной толщиной, на котором нить (10) с переменным весом имеет вес, который является меньшим, чем вес, который она имела до указанного участка с уменьшенной толщиной. 5 н. и 8 з.п. ф-лы, 7 ил.

МЕХАНИЧЕСКАЯ ДЕТАЛЬ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

Механическая деталь предназначена для шарнирного соединения с другими деталями в их оконечных точках, например в качестве рычага подпора шасси. Деталь выполнена из композитных материалов и состоит из выполненных из трехмерной ткани волокнистой центральной предварительно отформованной заготовки (13) и из волокнистой периферийной предварительно отформованной заготовки (11). Центральная и периферийная предварительно отформованные заготовки крепятся друг к другу при помощи вязальных проводов, при этом каждый вязальный провод проходит сквозь каждую из предварительно отформованных заготовок или, по меньшей мере, сквозь часть из них. Полученная механическая деталь обладает небольшой массой и хорошо выдерживает нагрузки. 3 н. и 12 з.п. ф-лы, 18 ил.

ТРЕХМЕРНАЯ ТКАНАЯ ПАНЕЛЬ С ВЫПОЛНЕННЫМИ ЗА ОДНО ЦЕЛОЕ С НЕЙ ЭЛЕМЕНТАМИ ЖЕСТКОСТИ

Изобретение относится к цельнотканым заготовкам для армированных композиционных конструкций. Цельнотканая трехмерная заготовка выполнена с элементами жесткости, проходящими в двух направлениях, сформирована из ткани-основы, которая состоит из первого, второго и третьего тканых слоев. Множество нитей переплетены в зоне между первым и вторым слоями таким образом, что первый слой может быть отогнут от второго. Дополнительное множество нитей переплетено в зоне между вторым и третьим слоями, так что третий слой может быть отогнут относительно второго. По завершении сгибания ткани-основы формируют цельнотканую трехмерную заготовку с элементами жесткости, проходящими в двух направлениях. Изобретение обеспечивает создание трехмерных заготовок, удобных в применении и более прочных. 3 н. и 51 з.п. ф-лы, 16 ил.

ЛОПАТКА ТУРБОРЕАКТИВНОГО ДВИГАТЕЛЯ, В ЧАСТНОСТИ, ЛОПАТКА ВЕНТИЛЯТОРА, И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

... 1. Композитная лопатка для турбореактивного двигателя, содержащая предварительно отформованную заготовку из нитей или волокон, сотканных в трех измерениях, и связующее, поддерживающее относительное расположение между нитями этой предварительно отформованной заготовки, причем эта предварительно отформованная заготовка сформирована из нитей основы и уточных нитей, причем направление нитей основы образует продольное направление заготовки, отличающаяся тем, что эта предварительно отформованная заготовка содержит, по меньшей мере, одну первую часть, реализованную в соответствии с первым типом текстильного плетения (А) и образующую лопасть лопатки, и вторую часть, реализованную в соответствии с вторым типом текстильного плетения (В) и образующую основание лопатки, причем упомянутая первая часть и упомянутая вторая часть отделены друг от друга некоторой переходной зоной, в которой текстильное плетение первого типа постепенно переходит в текстильное плетение второго типа и завершается им с возможностью ...

СПОСОБ ИЗГОТОВЛЕНИЯ ЦЕЛЬНОЙ ПРЕФОРМЫ ДЛЯ КОМПОЗИТНОЙ СТРУКТУРЫ

... 1. Способ изготовления цельной преформы (1) для композитной структуры, содержащей указанную преформу, образующую армирующий элемент структуры и матрицу, причем указанную преформу получают способом трехмерного тканья посредством ткацкого станка, содержащего по меньшей мере одно бердо и по меньшей мере две пары ремизов, причем каждый из ремизов содержит множество ремизок, причем каждая из ремизок имеет множество глазков, каждый из которых предназначен для прохождения основной нити (13), причем указанные по меньшей мере две пары ремизов распределены по разным высотам относительно ткацкого станка так, чтобы образовывать множество уровней,указанный способ изготовления отличается тем, что он содержит следующие этапы, на которых:множество прядей основных нитей (13) размещают с распределением на указанных по меньшей мере двух парах ремизов;поочередно и надлежащим образом выполняют:движения малой амплитуды каждой из указанных по меньшей мере двух пар ремизов для заранее заданной длины указанных ...

СПОСОБ ИЗГОТОВЛЕНИЯ ПРОУШИНЫ НА КОНСТРУКТИВНОМ ЭЛЕМЕНТЕ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА, В ЧАСТНОСТИ НА ТЯГЕ

... 1. Способ изготовления проушины на конструктивном элементе из композитного материала, выполненном, по меньшей мере, локально в виде наложенных друг на друга первичных слоев (N1…N7) композитных волокон, образующих, по меньшей мере, одно удлинение (113), предназначенное для формирования проушины, отличающийся тем, что содержит этап разъединения первичных слоев, по меньшей мере, на уровне удлинения и введения промежуточных слоев (116) между первичными слоями. ! 2. Способ по п.1, в котором промежуточные слои (116) содержат волокна, направленные под углом по отношению к волокнам утка, образующим первичные слои (N1…N7), на уровне удлинения. ! 3. Способ по п.1, в котором через первичные слои и промежуточные слои пропускают поперечные волокна (117). ! 4. Способ по п.1, в котором вставляют промежуточные слои (117), которые имеют ширину, увеличивающуюся по обе стороны от центральной плоскости удлинения (113) по мере удаления от плоскости (113). ! 5. Способ по п.1, в котором после впрыскивания смолы ...

П-ОБРАЗНАЯ ЗАГОТОВКА

... 1. Способ образования тканой заготовки, согласно которому:а. берут смежные слои, каждый из которых содержит волокна основы, параллельные друг другу;b. переплетают волокна утка со слоями волокон основы с образованием основания и по меньшей мере одной ножки, выходящей из основания; ис. выборочно удаляют по меньшей мере одно волокно основы из первой части заготовки, образующей первую ножку, и/или выборочно добавляют по меньшей мере одно волокно основы к указанной первой части заготовки с перемещением первой ножки на заданное расстояние в направлении утка.2. Способ по п.1, согласно которому дополнительно:- одновременно добавляют волокна основы ко второй части заготовки, образующей вторую ножку, и/или удаляют волокна основы из указанной второй части заготовки с одновременным перемещением второй ножки на заданное расстояние в направлении утка.3. Способ по п.1, согласно которому дополнительно:- повторяют этап добавления или удаления волокон основы с образованием по меньшей мере одной ножки в направлении ...

НАПРАВЛЯЮЩАЯ ЛОПАТКАВЕНТИЛЯТОРА, ВЫПОЛНЕННАЯ ИЗ ТРЕХМЕРНОГО КОМПОЗИЦИОННОГО МАТЕРИАЛА

... 1. Способ изготовления направляющей лопатки, отличающийся тем, что он включает: ! а) изготовление волоконной преформы (1) посредством трехмерного переплетения одной детали, причем преформа содержит первую часть (10), продолжающуюся вдоль продольной оси (А) и образующую преформу для аэродинамического профиля лопатки, и расположенную на продольном конце (11) первой части (10) вторую часть (20), образующую преформу для платформы лопатки, причем вторая часть (20) выполнена в виде первого слоя (40) и второго слоя (50), обращенного к первому слою и отделенного от первого слоя (40) посредством разделения без разрезания при изготовлении преформы (1); ! b) сгибание первого и второго слоев (40, 50) таким образом, что каждый из них расположен в плоскости, перпендикулярной продольной оси, по существу, симметрично друг другу относительно первой части (10), и таким образом, что первый участок (R1) первого слоя (40) перекрывает второй участок (R2) второго слоя (50) перед передней кромкой (15) первой части ...

ДЕТАЛЬ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА ОКСИД/ОКСИД С ТРЕХМЕРНЫМ УСИЛЕНИЕМ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

АРМИРУЮЩАЯ ВОЛОКНИСТАЯ СТРУКТУРА ДЛЯ ДЕТАЛЕЙ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА С БОЛЬШИМ ДИАПАЗОНОМ ТОЛЩИНЫ

УСИЛЕНИЕ ДЛЯ П-ОБРАЗНЫХ ЗАГОТОВОК С ВЫТАЧКАМИ

... 1. Усиление для трехмерной П-образной или Т-образной заготовки, имеющей по меньшей мере один компонент с вытачками, содержащее:ткань с расположенными в заданном направлении нитями, имеющую ширину, длину, первую лицевую поверхность и вторую лицевую поверхность, разделенные толщиной, причем первая лицевая поверхность ткани с расположенными в заданном направлении нитями прикреплена к имеющему вытачки компоненту заготовки.2. Усиление по п.1, в котором ткань с расположенными в заданном направлении нитями получена ткачеством.3. Усиление по п.1, в котором ткань с расположенными в заданном направлении нитями выткана с использованием программируемой системы натяжения.4. Усиление по п.1, в котором первая и вторая лицевые поверхности в основном параллельны друг другу.5. Усиление по п.4, в котором первая и вторая лицевые поверхности являются плоскими.6. Усиление по п.1, в котором длина усиления совпадает с основным направлением основных нитей заготовки с вытачками.7. Усиление по п.1, в котором ткань ...

ТКАНАЯ ЗАГОТОВКА, КОМПОЗИТНЫЙ МАТЕРИАЛ И СПОСОБ ИХ ИЗГОТОВЛЕНИЯ

... 1. Трехмерная тканая заготовка, содержащая:один или более слоев ткани с расположенной в заданном направлении основой.2. Заготовка по п.1, в которой часть ткани с расположенной в заданном направлении основой получена вдавливанием в пресс-форму для формования вертикального выступа.3. Заготовка по п.2, в которой указанная заготовка содержит указанный вертикальный выступ и/или соединительный выступ в корпусе.4. Заготовка по п.3, в которой указанные корпус и вертикальный выступ сплетены за одно целое, таким образом образуя непрерывное волокно по всей заготовке.5. Заготовка по п.4, представляющая собой часть иллюминаторной рамы.6. Заготовка по п.5, представляющая собой часть иллюминаторной рамы летательного аппарата.7. Заготовка по п.1, в которой первая часть указанной ткани с расположенной в заданном направлении основой содержит углеродные волокна, разорванные растягиванием, или прерывистые жгуты, или иной тип волокон, выполненных с возможностью разрыва растягиванием или без возможности разрыва ...

КВАЗИИЗОТРОПНАЯ ТРЕХМЕРНАЯ ЗАГОТОВКА И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

... 1. Квазиизотропная трехмерная тканая заготовка, содержащая:переплетенные друг с другом тканые элементы, причем по меньшей мере один указанный тканый элемент содержит по меньшей мере один вытканный за одно целое с ним элемент жесткости или стенку в направлении, перпендикулярном плоскости указанных тканых элементов.2. Заготовка по п.1, в которой указанные один или более вытканные за одно целое элементы жесткости в указанных тканых элементах вместе формируют в указанной заготовке квазиизотропные внеосевые или шестиугольные элементы жесткости.3. Заготовка по п.1, в которой указанный по меньшей мере один вытканный за одно целое элемент жесткости в указанном по меньшей мере одном тканом элементе сформирован путем складывания части указанных тканых элементов.4. Заготовка по п.3, в которой нижняя часть указанной петли пришита к основанию указанных тканых элементов.5. Заготовка по п.1, в которой указанные тканые элементы являются многослойными текстильными тканями.6. Заготовка по п.5, в которой ...

ЛОПАТКА ТУРБОМАШИНЫ С ЧЕТНОЙ ИЛИ НЕЧЕТНОЙ ДОПОЛНЯЮЩЕЙ ГЕОМЕТРИЕЙ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

... 1. Способ изготовления лопатки (100; 200) турбомашины из композитного материала, включающего уплотненное матрицей волоконное армирование, содержащий следующие этапы: изготовление трехмерным тканьем цельной волокнистой заготовки; придание волокнистой заготовке (300) формы для получения цельной преформы лопатки, включающей первую часть (320), представляющую собой преформу пера (420) и хвостовика (430) лопатки, вторую часть (340), представляющую собой преформу (440) корневой полки лопатки, причем указанная преформа лопатки лишена при этом преформы противонаклонной стенки, или представляющую собой преформу (550) противонаклонной стенки, причем указанная преформа лопатки лишена при этом преформы корневой полки, и третью часть (360), представляющую собой преформу (460) спойлерной пластины периферийной полки, причем указанная преформа лопатки лишена при этом преформы уплотнительной пластины периферийной полки, или вторую часть, представляющую собой преформу (550) противонаклонной стенки, причем ...

СПОСОБ ИЗГОТОВЛЕНИЯ ТУРБОМАШИННОЙ ЛОПАТКИ, СДЕЛАННОЙ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА

... 1. Способ изготовления турбомашинной лопатки из композиционного материала, имеющей встроенные в нее нижнюю и/или верхнюю полки, при этом способ включает в себя этапы: отдельно формируют элемент полки лопатки, который включает в себя упрочненное волокнистое усиление и который имеет форму, близкую к форме полки лопатки, которую необходимо изготовить, с по меньшей мере одним отверстием, сформированным в элементе полки, причем отверстие имеет форму профиля аэродинамической поверхности лопатки, которую необходимо изготовить; зацепляют элемент полки посредством его отверстия на преформе с волокнистым усилением для аэродинамической поверхности и основания лопатки; и компонуют элемент полки с преформой для аэродинамической поверхности и основания лопатки;при этом способ отличается следующими этапами:- применяют пространственное плетение для изготовления гибкой волокнистой заготовки в виде единой детали, которая включает в себя участки преформы для аэродинамической поверхности и основания лопатки ...

ТРЕХМЕРНЫЙ ТКАНЫЙ УГЛОВОЙ СОЕДИНИТЕЛЬНЫЙ ЭЛЕМЕНТ С СОЕДИНИТЕЛЬНЫМИ ВНАХЛЕСТКУ ЗАГОТОВКАМИ

ЛОПАТКА ТУРБОМАШИНЫ ИЗ КОМПОЗИЦИОННОГО МАТЕРИАЛА И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

... 1. Способ изготовления лопатки турбомашины из композиционного материала, содержащего уплотненную матрицей волокнистую арматуру, включающий:выполнение трехмерного ткачества цельной волокнистой заготовки;придание формы волокнистой заготовке с получением цельной волокнистой преформы, имеющей первую часть, образующую преформу хвостовика и пера лопатки, по меньшей мере одну вторую часть, образующую преформу внутренней полки лопатки или гребешков наружной полки лопатки, и по меньшей мере одну третью часть, образующую преформу арматуры внутренней полки лопатки или обтекаемых выступов наружной полки лопатки; иуплотнение волокнистой преформы матрицей с получением лопатки из композиционного материала, имеющей волокнистую арматуру, образованную преформой и уплотненную матрицей, и образующей цельную деталь со встроенными в нее внутренней и/или наружной полкой(ами).2. Способ по п.1, при этом в продольном направлении, соответствующем продольному направлению изготавливаемой волокнистой заготовки, эта ...

СПОСОБ ИЗГОТОВЛЕНИЯ ДЕТАЛИ И КОМПОЗИТНАЯ СПЛОШНАЯ ДЕТАЛЬ, ПОЛУЧАЕМАЯ С ПОМОЩЬЮ СПОСОБА

СПОСОБ ИЗГОТОВЛЕНИЯ ФАСОННОЙ ДЕТАЛИ ТРЕХМЕРНЫМ ТКАНЬЕМ И ФАСОННАЯ ДЕТАЛЬ, ПОЛУЧЕННАЯ ТАКИМ СПОСОБОМ

... 1. Способ изготовления фасонной детали, заключающийся в выполнении заготовки (11) трехмерным тканьем путем сплетения уточных нитей поперек пучка нитей основы, выполненных в виде различных полотен, и путем пропитки этой заготовки термоотверждаемой смолой, отличающийся тем, что содержит этапы:- в процессе тканья выполняют частичное рассоединение (19) между двумя полотнами нитей основы;- растягивают упомянутую заготовку для образования в ней полости желаемого объема с помощью упомянутого рассоединения,- пропитывают выполненную таким образом заготовку упомянутой смолой.2. Способ по п.1, отличающийся тем, что операцию, заключающуюся в образовании упомянутой полости, выполняют путем введения в заготовку (11) в месте упомянутого рассоединения (19) блока из материала с малой плотностью (10), имеющего форму и размеры желаемой полости.3. Способ по п.1, отличающийся тем, что операцию, заключающуюся в образовании упомянутой полости, выполняют путем введения надуваемой детали (120) в заготовку (111) ...

ВОЛОКОННАЯ СТРУКТУРА ТРЕХМЕРНОГО ПЛЕТЕНИЯ, ВОЛОКОННАЯ ЗАГОТОВКА, ПОЛУЧЕННАЯ ИЗ ЭТОЙ ВОЛОКОННОЙ СТРУКТУРЫ, И ДЕТАЛЬ ИЗ ВОЛОКОННОГО МАТЕРИАЛА, СОДЕРЖАЩАЯ ЭТУ ЗАГОТОВКУ

... 1. Волоконная структура, сплетенная путем трехмерного плетения, имеющая множество слоев нитей основы, связанных между собой посредством уточных нитей множества слоев уточных нитей, причем волоконная структура имеет первый участок и второй участок, которые продолжают один другой в направлении утка, и выполнены с возможностью сгибания относительно друг друга, чтобы образовать угол в области сгиба, в которой в области сгиба и в каждой плоскости утка две уточные нити, расположенные в области, смежной наружной поверхности волоконной структуры, расположенной на внутренней стороне угла, имеют пересекающиеся траектории.2. Волоконная структура по п. 1, в которой одна из упомянутых двух уточных нитей является нитью, которая, на первом участке или на втором участке, является самой ближней к упомянутой наружной поверхности.3. Волоконная структура по п. 2, в которой в области сгиба нити двух слоев уточных нитей, которые являются самыми ближними к наружной поверхности волоконной структуры, имеют траектории ...

ВОЛОКОННАЯ СТРУКТУРА, СПЛЕТЕННАЯ В ВИДЕ ЕДИНОЙ ЧАСТИ ПУТЕМ ТРЕХМЕРНОГО ПЛЕТЕНИЯ, И ЕЕ ПРИМЕНЕНИЕ ДЛЯ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА

... 1. Волоконная структура, сплетенная в виде единой части путем трехмерного плетения, имеющая противоположные поверхности и содержащая:- первый участок, имеющий множество слоев нитей основы и образующий первый участок толщины волоконной структуры между ее противоположными поверхностями;- второй участок, имеющий множество слоев нитей основы и образующий второй участок толщины волоконной структуры, причем нити основы располагаются в столбцах, каждый из которых включает в себя нити основы первого участка и второго участка; и- в каждой плоскости волоконной структуры группу уточных нитей, связывающих между собой слои нитей основы первого участка и второго участка, при этом оставляя по меньшей мере одну несвязанную область, разделяющую первый и второй участки на части размера волоконной структуры в направлении утка от края волоконной структуры до конца несвязанной области,при этом- одна или более одних и тех же первых уточных нитей связывают между собой слои нитей основы первого участка волоконной ...

Formwork for a construction

FIBRE PREFORMS FOR STRUCTURAL COMPOSITE COMPONENTS

SAND YIELDING STRUCTURE WITH TEXTILE CORE

STRENGTHENED ARTICLE AND PROCEDURE FOR ITS PRODUCTION

DUCTILE TEXTILE STRUCTURE.

THREE-DIMENSIONAL FABRIC AND PROCEDURE FOR ITS PRODUCTION

TEXTILE INSERT TO THE PRODUCTION OF A GRP COMPONENTS WORK MATERIAL AS WELL AS GRP COMPONENTS MATERIAL

RIGID FIBER LATTICE STRUCTURES WITH IMPROVED FORM RE-ESTABLISHMENT AFTER DEFORMATION UNDER PRESSURE, PROCEDURE FOR THEIR PRODUCTION AND THESE STRUCTURES CONTAINING ARTICLES

PROCEDURE FOR MANUFACTURING A THREE-DIMENSIONAL TEXTILE COMMODITY, IN ADDITION THREAD USED, WITH THIS THREAD OR THIS PROCEDURE MANUFACTURED COMPOSITE MATERIALS

Method for weaving closed structures with intersecting walls

Seamed industrial fabrics

Engineered materials and methods of forming

A method of forming a substrate includes mapping a three dimensional spatial distribution of at least one structural protein fiber of extracellular matrix of biological material of interest, designing a fiber assembly pattern based on an intrinsic pattern of the at least one structural protein fiber of the extracellular matrix of the biological material, and assembling fibers based on the fiber assembly pattern to form the substrate.

REINFORCED ARTICLE AND METHOD OF MAKING

A fabric for providing reinforcement and the like which is made from a two dimensional flat fabric which includes portions that the warp and weft fibers are interlocked together and portions that are non-interlocked together that allow the fabric to be folded to create a three dimensional structure without the need for cutting and darting.

HIGH SPEED THREE-DIMENSIONAL WEAVING METHOD & MACHINE

A method and machine for high speed formation of a three-dimensional woven fiber structure (10) having at least two warp yarn systems (12,14, 16) having approximately zero crimp, wherein the warp (12) and filling yarns (16) are non- interlacing with each other, and are secured as an integral fabric via at least one vertical or Z yarn system (12) and the warp yarn systems (12) provided to be positioned by harness frames (W1,W2,W3,W4). The 3-D woven fabric of the present invention is fabricated on a 3-D weaving machine having rapier filling insertion that provides filling yarns insertions in unique shed openings (22) in series to produce a complete filling insertion cycle for every movement of Z-direction yarn harnesses (Z1,Z2).

THREE-DIMENSIONAL WOVEN INTEGRALLY STIFFENED PANEL

... ²²²An integrally woven three-dimensional preform with stiffeners in two ²directions constructed from a woven base fabric (8) having first, second and ²third woven fabrics (10, 12, 14). A plurality of yarns are interwoven over a ²region between the first (10) and second (12) fabrics such that the first ²fabric is foldable relative to the second fabric. An additional plurality of ²yarns are interwoven over a region between the second (12) and third (14) ²fabrics such that the third fabric is foldable relative to the second fabric. ²Upon folding of the woven base fabric, the integrally woven three-dimensional ²preform with stiffeners in two directions is formed.² ...

WOVEN PREFORM, COMPOSITE, AND METHOD OF MAKING THEREOF

A three dimensional woven preform, a fiber reinforced composite incorporating the preform, and methods of making thereof are disclosed. The woven preform includes one or more layers of a warp steered fabric. A portion of the warp steered fabric is compressed into a mold to form an upstanding leg (20). The preform includes the upstanding leg and a joggle (15) in a body portion. The body portion and upstanding leg are integrally woven so there is continuous fiber across the preform. A portion of the warp steered fabric includes stretch broken carbon fibers in the warp direction, and another portion includes conventional carbon fibers. The warp steered fabric can be woven on a loom equipped with a differential take-up mechanism. The warp steered fabric can be a single or multilayer fabric. The preform or the composite can be a portion of an aircraft window frame (10).

MULTILAYER FABRIC

A multilayer fabric (10) is provided with a constrained part (17) wherein all weft fiber layers (112a) layered in the direction of thickness are constrained by warp (13a, 13b), and a non-constrained part (16) that includes a slit (18) wherein a fifth fiber layer (15e) and a seventh fiber layer (15g), which are weft fiber layers (112a), are not constrained by warp (13a, 13b, 14a, 14b). The multilayer fabric (10) has a crossing part (A) at the boundary between the constrained part (17) and the non-constrained part (18). The crossing part (A) is formed by crossing warp (11a, 11b) adjacent in a second direction (Y).

MULTILAYER FABRIC

A multilayer fabric (10) is provided with a constrained part (17) wherein all weft fiber layers (112a) layered in the direction of thickness are constrained by warp (13a, 13b), and a non-constrained part (16) that includes a slit (18) wherein a fifth fiber layer (15e) and a seventh fiber layer (15g), which are weft fiber layers (112a), are not constrained by warp (13a, 13b, 14a, 14b). The multilayer fabric (10) has a crossing part (A) at the boundary between the constrained part (17) and the non-constrained part (18). The crossing part (A) is formed by crossing warp (11a, 11b) adjacent in a second direction (Y).

CURVED PREFORM AND METHOD OF MAKING THEREOF

Disclosed is an apparatus and method for forming three-dimensional woven preforms that can be curved and have continuous fibers in the direction of curvature. Also disclosed are woven preforms formed thereby.

FIBER STRUCTURE AND FIBER REINFORCED COMPOSITE MATERIAL

A fiber structure is provided with: a first corner part, which is an interface part for a first structural part and a second structural part; a second corner part, which is an interface part for the first structural part and a third structural part; and a third corner part which is an interface part for the second structural part and the third structural part. A first yarn that straddles the first structural part and the second structural part is bent by the first corner part. A second yarn that straddles the first structural part and the third structural part is bent by the second corner part. At least one of the first yarn and the second yarn which straddle the second structural part and third structural part, is curved by the third corner part.

TEXTILE CORE SANDWICH STRUCTURES

3D COMPOSITE FABRIC

L'invention concerne un tissu ayant un motif de base comportant: au moins 28 fibres de trame (1...28), disposés en quinconce et formant 8 colonnes (C1...C8) qui comportent alternativement 4 et 3 fibres de trames, les fibres de trame s 'étendant dans 7 niveaux (N1...N7); au moins 12 fibres de chaîne (A...L) disposés dans au moins 4 plans parallèles décalés, chacun de ces plans contenant au moins 3 fibres de trame parallèles qui suivent des chemins distincts d'un plan à l'autre.

COMPOSITE WOVEN OUTLET GUIDE VANE

A composite woven outlet guide vane (32) and method of forming are depicted. The guide vane (32) is formed by use of a preform structure (100) with a core (150) which is removed following the manufacture.

WOVEN PREFORM WITH INTEGRAL OFF AXIS STIFFENERS

An integrally woven three-dimensional preform with stiffeners in two or more directions constructed from a woven fabric having a first, second and optional third woven fabric layer. A plurality of yarns are interwoven over a region between the first and second fabric layers such that the first fabric layer is foldable relative to the second fabric layer. An additional plurality of yarns are interwoven over a region between the second and third fabric layers such that the third fabric layer is foldable relative to the second fabric layer. Upon folding of the woven fabric layers, the integrally woven three-dimensional preform with stiffeners in two or more directions is formed.

PRODUCTION OF A FIBROUS STRUCTURE WITH VARIABLE THICKNESS BY 3D WEAVING

The invention relates to a fibrous structure produced by multi-layer three-dimensional weaving with variable thickness, in a direction perpendicular to the warp (C) and weft (T) directions, in the warp direction while keeping the same number of woven warp threads at every point of the fibrous structure in the warp direction. During a transition to warp direction from a first portion of the fibrous texture to a second portion of the fibrous texture having a greater thickness than that of the first portion, the number of warp planes is reduced and the number of warp thread layers is increased without changing the number of warp threads, constituting at least one warp plane (Pl,...) in the second portion with warp threads from at least two different warp planes (Pl, P2,...) in the first portion.

PREFORM INTENDED TO FORM A HOLLOW STRUCTURAL MECHANICAL PART, RESULTING PART AND METHOD FOR PRODUCING SAID PREFORM

L'invention se rapporte à une préforme (300) destinée à former une pièce mécanique structurante creuse, ladite préforme (300) comprenant : un corps central (301 ) formant un plan moyen (307) et s'étendant sensiblement suivant un axe principal (309) contenu dans le plan moyen (307); et deux parties latérales (303, 305) s'étendant sensiblement suivant le plan moyen (307) selon un axe secondaire (311) sensiblement perpendiculaire à l'axe principal (309), le corps central (301) et chaque partie latérale (303, 305) comprenant des fibres de trame liées entre elles par des fibres de liaison, lesdites fibres de trame s'étendant suivant des couches de trame planes sensiblement parallèles entre elles, l'épaisseur (E) de chaque partie latérale (303, 305) diminuant en s'éloignant du corps central (301) selon l'axe secondaire (311). L'invention se rapporte également à un procédé de fabrication d'une telle préforme ainsi qu'à une pièce mécanique structurante creuse.

A METHOD OF FABRICATING A COMPOSITE MATERIAL TURBINE ENGINE VANE WITH INCORPORATED PLATFORMS

Multilayer weaving is used to form a fiber blank having a longitudinal direction corresponding to the longitudinal direction of the vane to be made and comprising across its thickness a first woven portion (102) with a plurality of layers of yarns interlinked by weaving, and also a second woven portion and a third woven portion. The first portion is situated between the second and third portions to which it is interlinked by weaving over only a fraction of its longitudinal dimension. A preform for the vane to be made is formed by folding out, on either side of the first portion, segments (104a, 106a, 104b, 106b) of the second and third portions that are not interlinked with the first portion, by shaping the first portion to form a preform portion for the airfoil of the vane to be made, and by shaping the folded-out segments of the second and third portions to form preform portions for the inner and outer platforms of the vane to be fabricated, the vane preform being densified with a matrix ...

MONOBLOC PREFORM AND BLADE FOR TURBO MACHINE

Préforme fibreuse pour une aube de turbomachine, obtenue par tissage tridimensionnel monobloc. Selon l'invention, la préforme comprend un premier tronçon longitudinal (41), apte à former un pied d'aube, un deuxième tronçon longitudinal (42), prolongeant le premier tronçon longitudinal, apte à former une partie de pale, et un premier tronçon transversal (51), s'étendant transversalement depuis la jonction entre les premier et deuxième tronçons longitudinaux (41, 42), apte à former une première plate-forme.

FIBROUS BLANK WOVEN IN ONE PIECE BY THREE-DIMENSIONAL WEAVING FOR PRODUCING A PLATFORM WITH A CLOSED BOX STRUCTURE FOR A TURBOMACHINE FAN MADE OF COMPOSITE MATERIAL

L'invention concerne une ébauche fibreuse (100) tissée en une seule pièce par tissage tridimensionnel pour la réalisation d'une plate-forme à caisson fermé pour soufflante de turbomachine en matériau composite. Dans chaque plan de l'ébauche fibreuse, un ensemble de fils de chaîne lie entre elles les couches de fils de trame de la première (102), de la deuxième (104) et de la troisième (106) partie de l'ébauche fibreuse tout en ménageant une déliaison fermée (108) séparant la première partie de la deuxième partie sur une portion de la dimension de l'ébauche fibreuse en direction chaîne entre une limite amont (108a) et une limite aval (108b) de déliaison, et au moins une déliaison ouverte (110) séparant la deuxième partie de la troisième partie sur une portion de la dimension de l'ébauche fibreuse en direction chaîne à partir d'une limite de déliaison (110a) jusqu'à un bord aval (100c) de l'ébauche fibreuse. L'invention concerne également un procédé de fabrication d'une préforme de plate-forme ...

INTERLINKED MULTILAYER TEXTURE FOR STRUCTURAL COMPOSITE MATERIALS

L'armure de base comprend d'une part vingt-huit fils de trame (1 à 28), répartis en huit colonnes (C1 à C8) alternativement de quatre fils et de trois fils superposés, avec disposition en quinconce sur sept niveaux (N1 à N7), et d'autre part douze fils de chaîne (29 à 40), disposés sur quatre plans parallèles contenant, chacun, trois fils de trame parallèles superposés. Dans chaque plan, des fils de chaînes relient les fils de trame extrêmes supérieurs (1, 8, 15, 22) aux fils de trame intermédiaires, et les fils de trame intermédiaires aux fils de trame extrêmes inférieurs (4, 11, 18, 25). Application à la réalisation de pièces en matériaux composites fortement sollicitées et/ou soumises aux impacts.

WOVEN 3D FABRIC MATERIAL

A woven 3D fabric material (12u) comprises multilayer axial warp yarns (6) and two orthogonal sets of weft (7 and 8) which interlace with the rows and the columns of the warp (6) respectively to provide integrity to the fabric which may additionally incorporate between the rows and the columns of the interlacing warp (6) sets of non-interlacing multi-directionally orientated yarns (6ps, 9c, 9a, 9b and 9d) in the fabric-length, -width, -thickness, and two diagonal directions respectively to improve the fabric's mechanical properties. The interlacing of the multilayer warp (6) and the two orthogonal sets of weft (7 and 8) is enabled by a dual-directional shedding means which forms sheds in the row-wise and the column wise directions of the multilayer warp. The produced woven 3D fabric material which may be cut into any desired shape without the risk of splitting up, may be wholly or in parts in technical applications.

Method for the additive manufacture of a textile sheet product.

Es wird ein Verfahren zur additiven Fertigung eines textilen Flächenprodukts und ein dreidimensional gedrucktes textiles Flächenprodukt 1 () offenbart. Das Verfahren umfasst dabei die Schritte: Erstellen eines dreidimensionalen Modells des Vorprodukts und additive Fertigung des Vorprodukts gemäss dem dreidimensionalen Modell des Vorprodukts. Bei der additiven Fertigung wird hierbei ein Fertigungsmaterial schichtweise aufgebracht. An mindestens einer vorbestimmten Überkreuzungsposition von mindestens zwei faserförmigen Strukturen (2a, 2b) wird ein Trennschichtmaterial aufgebracht, welches vom Vorprodukt entfernbar und/oder inaktivierbar ist.

ВОЛОКОННАЯ АРМИРУЮЩАЯ СТРУКТУРА ДЛЯ ИЗГОТОВЛЕНИЯ ДЕТАЛИ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА

Волоконная армирующая структура (10), вытканная в виде единой детали, для изготовления детали из композитного материала, имеет внутреннюю часть (12), или сердцевину, выполненную с помощью трехмерного тканья из нитей, образованных волокнами ограниченной длины, и часть, которая граничит с внешней поверхностью, или оболочку, выполненную с помощью тканья из нитей, образованных волокнами неограниченной длины.

ТКАНЕВАЯ СТРУКТУРА (ВАРИАНТЫ), ГИБКИЙ КОНТЕЙНЕР И ПАНЕЛЬ, СОДЕРЖАЩИЕ ТАКУЮ СТРУКТУРУ

Заявленная тканевая структура содержит по меньшей мере две тканевых стенки, присоединенные одна к другой по меньшей мере одной свободной плетейной нитью. Изменение длины между двумя последовательными грузилами указанной по меньшей мере одной плетейной нити, где каждое из указанных грузил соответствует расположению уточной нити другой стенки, является непрерывным в по меньшей мере одной части указанной структуры в направлении основной нити и/или в направлении уточной нити. Заявленная тканевая структура содержит по меньшей мере одну верхнюю тканевую стенку и одну нижнюю тканевую стенку, которые присоединены одна к другой по меньшей мере одной свободной плетейной нитью. По меньшей мере одна свободная плетейная нить имеет нескрепленные части в направлении уточной нити, где каждая из этих частей соответствует указанной по меньшей мере одной плетейной нити, которая присоединена с одной стороны по меньшей мере двумя основными нитями к верхней стенке и с другой стороны по меньшей мере двумя основными ...

упрочняющая волоконная структура для детали из композиционного материала и деталь, содержащая эту структуру

Цельнотканая упрочняющая волоконная структура для изготовления детали из композиционного материала; причем волоконная структура имеет внутреннюю, или срединную, часть (72) и часть, которая примыкает к внешней поверхности структуры, или к поверхностному слою (74, 76); при этом волоконная структура сформирована объемным переплетением в ее срединной части с помощью, по меньшей мере, одного переплетения, выбранного из числа интерлок-переплетения и многослойного переплетения, и путем атласного переплетения в ее поверхностном слое, которое отличается от переплетения в срединной части, причем переплетение в поверхностном слое является многослойным или двухмерным.

WOVEN CONSTRUCTION AND PANEL OR THE CAPACITY, WHICH CONTAINS THIS CONSTRUCTION

CHAIN FOR HEAVY OPERATING CONDITIONS

Anti-ultraviolet and water-proof fabric

Having a variable weight of the fiber structure of the yarn

New fabric and its applications

Thick walled, highly compact, complex, shaped - textile bodies for flexible conveyor belts, tyres

WOVEN FIBROUS STRUCTURE HAVING ON AT LEAST ONE OF ITS OUTER FACES A WEAVING SATIN WEAVE

MULTI-DIMENSIONAL TEXTILE STRUCTURE FOR REINFORCING TABS FOR EASY METHOD AND WEAVING MACHINE FOR OBTAINING SUCH A STRUCTURE

Tissu textile destine a prendre une forme tridimensionnelle et procede pour fabriquer un tel tissu

Un tel tissu textile comprend un nombre eleve de fils obliques 1 s'etendant dans des directions radiales a partir du centre du tissu textile, et un fil circonferentiel 2 enroule en spirale dans une direction circonferentielle entre les fils obliques, ce qui a pour effet que des fils obliques voisins sont entrelaces l'un avec l'autre et que le fil circonferentiel est imbrique entre les fils obliques ainsi imbriques de sorte qu'un tel entrelacement peut apparaitre entre des spires voisines du fil circonferentiel, en fournissant au tissu textile son caractere triaxial. Application notamment aux tissus textiles destines a renforcer des structures possedant la forme de corps de revolution.

A METHOD FOR CARRYING OUT A TABLECLOTH WITHOUT END USING A THREE-DIMENSIONAL FABRIC BAND; TABLECLOTHS WITHOUT END OBTAINED ACCORDING TO THIS PROCESS; ARTICLES COMPRISING EACH ONE AT LEAST ONE OF THESE TABLECLOTHS

MANUFACTORING PROCESS Of a PART AND COMPOSITE MASSIVE PART OBTAINED BY THIS PROCESS

COMPOSITE MATERIAL AND METHOD FOR MAKING SAME.

FIBER STRUCTURE FOR COMPOSITE MATERIAL COMPONENT HAVING ONE OR MORE SHAPED PORTIONS ARCH

METHOD OF MAKING A TURBOMACHINE BLADE ROOT AND BLADE ROOT COMPOSITE MATERIAL OBTAINED BY SUCH A METHOD

FIBROUS STRUCTURE FOR AXISYMMETRIC PART OF COMPOSITE MATERIAL WITH SCALABLE AND PART HAVING THE DIAMETER

Appts to bond layers of materials in a three-dimensional fabric has blocks in the piston paths to restrict their movements for shorter operating times and increased productivity

L'appareil (1) insère des fils de liaison (Z) dans une superposition de couches de fibres dans une direction transversale à chaque couche de fibre. L'appareil (1) comporte des aiguilles d'insertion (40) pour insérer des fils de liaison (Z) dans la superposition de couches (F). Les aiguilles d'insertion (40) sont déplacées entre une position d'attente, où les aiguilles (40) sont séparées de la superposition de couches (F), et une position de fonctionnement, où les aiguilles (40) pénètrent dans la superposition de couches (F). La superposition de couches (F) est serrée par deux éléments de pressage (85, 99a, 99b) opposés. Les éléments de pressage (85, 99a, 99b) sont actionnés par des vérins pneumatiques (82, 97, 98). Un dispositif de blocage (88, 103) peut être déplacé dans et en dehors de la plage de déplacement de la tige de piston (82a, 97a, 98a) de chacun des vérins pneumatiques (82, 97, 98). Le dispositif de blocage (88, 103) est actionné par un actionneur (102). Lorsque les dispositifs ...

PADDLE OF MATERIAL TURBOSHAFT ENGINE COMPOSITE AND PROCEEDED FOR SA MANUFACTURE

DEVICE OF MEASUREMENT OF THE PRESSURE STARTING FROM A FLEXIBLE, FOLDABLE AND/OR EXTENSIBLE OBJECT CARRIED OUT FROM TEXTILE MATTER COMPRISING A DEVICE OF MEASUREMENT

MANUFACTORING PROCESS Of a PADDLE OF TURBOSHAFT ENGINE

METHOD OF MANUFACTURING TAPE APPLICATOR

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE

L'invention concerne un procédé de fabrication d'une pièce en matériau composite comprenant un renfort fibreux et une matrice céramique présente dans la porosité du renfort fibreux, le procédé comprenant au moins les étapes suivantes : a) la formation du renfort fibreux par tissage tridimensionnel de fils céramiques (étape E1), le renfort fibreux ainsi formé présentant une armure interlock ; b) la formation d'une première phase de matrice céramique dans la porosité du renfort fibreux (étape E4) ; c) l'introduction dans la porosité du renfort fibreux, après mise en œuvre de l'étape b), d'une poudre comprenant des particules céramiques et/ou des particules de carbone (étape E5) ; et d) l'infiltration du renfort fibreux obtenu après mise en œuvre de l'étape c) par une composition d'infiltration à l'état fondu comprenant au moins du silicium de manière à former une deuxième phase de matrice céramique dans la porosité du renfort fibreux et obtenir ainsi la pièce en matériau composite (étape ...

INSERT PLATFORM ALUMINUM COMPOSITE MATERIAL, AND METHOD OF FORMING SAME

L'invention concerne une plateforme rapportée (1) destinée à être positionnée entre deux aubes voisines d'une soufflante de turbomachine aéronautique, ladite plateforme comprenant une paroi de veine (10) en matériau composite comportant une portion centrale (16), et un premier et un deuxième bord (18) s'étendant dans une direction longitudinale de ladite paroi, chaque bord s'étendant sur une distance déterminée (D) depuis la portion centrale (16) dans une direction transversale de ladite paroi, ladite paroi de veine comprenant un renfort fibreux densifié par une matrice, caractérisée en ce que le renfort fibreux présent dans la portion centrale (16) présente un tissage tridimensionnel, et en ce que le renfort fibreux présent dans les premier et deuxième bords (18) présente au moins en partie un tissage bidimensionnel. L'invention vise aussi un module de soufflante, une turbomachine et un procédé de fabrication d'une telle plateforme.

MANUFACTORING PROCESS OF THREE-DIMENSIONAL FABRIC PARTS

ELEMENT OF TURBINE NOZZLE IN CMC, PROCEEDED FOR SA MANUFACTURE, AND DISTRIBUTOR AND GAS TURBINE INCORPORATING It.

Composition coupling rod manufacturing procedure uses cut-out shape with multiple primary plies that is rolled and joined by chamfered edges

L'invention concerne un procédé de fabrication d'une bielle en matériau composite, comportant l'étape de découper un patron (110) présentant deux bords opposés (112) dans un tissu de fibres composites comportant plusieurs plis primaires superposés liés entre eux de sorte que les plis primaires puissent glisser relativement l'un à l'autre, de rouler le patron en tube de sorte que les plis primaires glissent entre eux pour donner aux deux bords une forme en biseau, et joindre les bords en biseau de sorte qu'ils se recouvrent.

METHOD FOR MANUFACTURING A BLADE OF A CERAMIC MATRIX COMPOSITE MATERIAL, THUS OBTAINED THE TURBOMACHINE BLADE AND INCORPORATING

L'invention concerne un procédé de fabrication d'une aube de turbomachine en matériau composite à renfort fibreux densifié par une matrice et comprenant une pale, une plateforme située à une extrémité longitudinale de la pale et au moins un élément fonctionnel s'étendant à partir de la face externe de la plateforme. Le procédé comprend : - la réalisation par tissage multicouches d'une ébauche fibreuse en une seule pièce, - la mise en forme de l'ébauche fibreuse pour obtenir une préforme fibreuse en une seule pièce ayant une première partie (302) formant une préforme de la pale d'aube (320) et une deuxième partie (314) formant une préforme de la plateforme (340) et au moins une préforme d'élément fonctionnel (352 ; 354), et - la densification de la préforme fibreuse par une matrice. La deuxième partie de la préforme comprend un ensemble de couches de fils liées entre elles par tissage avec aménagement d'au moins une zone déliée permettant le déploiement de la préforme d'élément fonctionnel ...

PADDLE OF MATERIAL TURBOSHAFT ENGINE COMPOSITE AND PROCEEDED FOR SA MANUFACTURE.

Une aube de turbomachine en matériau composite comprenant un renfort fibreux densifié par une matrice est fabriquée par un procédé comprenant : - la réalisation par tissage tridimensionnel d'une ébauche fibreuse (100) en une seule pièce, - la mise en forme de l'ébauche fibreuse pour obtenir une préforme fibreuse en une seule pièce ayant une première partie formant préforme de pale et pied d'aube et au moins une deuxième partie formant préforme de plateforme ou talon d'aube, et - la densification de la préforme par une matrice pour obtenir une aube en matériau composite ayant un renfort fibreux constitué par la préforme et densifié par la matrice, et formant une seule pièce avec plateforme et/ou talon intégrés.

FIBROUS PREFORM FOR MANUFACTURING A COMPOSITE MATERIAL PART AND METHOD THEREFOR

L'invention concerne une préforme fibreuse (100) tissée à partir d'une pluralité de fils ou torons (110, 120), la préforme étant destinée à former le renfort fibreux d'une pièce en matériau composite, la préforme comprenant en outre une armature intégrée (120) constituée d'un alliage à mémoire de forme apte à se conformer suivant une forme prédéfinie lorsqu'il est exposé à une température de transition. L'invention vise aussi un procédé de fabrication d'une pièce en matériau composite.

METHOD FOR MANUFACTURING A TURF REINFORCEMENT MAT

A turf reinforcement fabric and a method for producing such a fabric by weaving a plurality of filaments in a predetermined pattern to form a three-dimensional structure formed to have a loft thickness without the application of heat to heat shrink the fibers, and/or formed with one or more fibers of increased thickness at peaks and valleys of the woven structure, and/or incorporating flame retardant and/or UV stabilizing fiber additives. 1. A three-dimensional turf-reinforcement fabric comprising a woven array of fibers comprising a first plurality of fibers arranged in a first direction and a second plurality of fibers arranged in a second direction generally perpendicular to the first direction , wherein the second plurality of fibers are interwoven with the first plurality of fibers to form an interlaced weave , the woven array of fibers defining rows and columns of cells , wherein each cell comprises fiber segments of the first plurality of fibers and the second plurality of fibers being spaced at differing heights in a third direction perpendicular to the first and second directions to define crests within the woven array , and wherein at least one of the first plurality of fibers proximal at least one of the crests has an increased diameter relative to the remainder of the first plurality of fibers.2. The three-dimensional turf-reinforcement fabric of claim 1 , wherein at least one of the first plurality of fibers proximal each of the crests has an increased diameter relative to the remainder of the first plurality of fibers.3. The three-dimensional turf-reinforcement fabric of claim 1 , wherein a plurality of the first plurality of fibers proximal each of the crests have an increased diameter relative to the remainder of the first plurality of fibers.4. The three-dimensional turf-reinforcement fabric of claim 1 , wherein the woven array of fibers comprises a tubular or honeycomb pattern.5. The three-dimensional turf-reinforcement fabric of claim 1 , wherein ...

Fiber preform for a turbine ring sector, and its method of fabrication

A fiber preform for a turbine ring sector obtained by three-dimensional weaving and including a base-forming first portion, two tab-forming L-shaped portions each presenting two branches, two ends of the first portion being extended by respective ones of the first branches, and a second portion connecting together the two tabs, first and second strips woven together forming the first branches, a first fraction of the thicknesses of the second branches, and the first portion, there being a non-linked zone between them that is situated in the first branches and in the first portion, and a third woven strip forming the second portion and a second fraction of the thickness of the second branches of each of the tabs.

Three-dimensional cellular light structures weaving by helical wires and the manufacturing method of the same

A three-dimensional cellular light structure formed of continuous wire groups. For example, six orientational helical wire groups are intercrossed in a three-dimensional space and form a uniform pattern. In a manufacturing method, a frame assembly of rectangular frames and connection support bars is used. The method includes arranging and fixing first axis wires on the frames, connecting the frames by connection support bars, and assembling second axis wires to make a three-dimensional cellular light structure. The intersection points of the wires may be bonded. It can be a fiber-reinforced composite material by filling at least part of an internal empty space of the structure.

Fibrous structure for a part made of a composite material and having a complex shape

A reinforcing fiber structure woven as a single piece for fabricating a composite material part and including: first and second fiber substructures, each fiber substructure including at least one independent portion obtained by multilayer weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns that are independent from the other substructure; and an assembly portion between the least first and second fiber substructures in which a plurality of adjacent layers of warp yarns of the first fiber substructure are interlinked by at least some of the warp yarns of the second fiber substructure.

Weaving method and loom for implementing this method

The loom includes a weaving area ( 18 ) into which weft threads are inserted into at least one upper channel and one lower channel, each of these weft threads being inserted between at least two warp threads by at least one weft insertion element: first element for focusing on one of these channels and determining the position of the warp threads relative to the weft thread, and second element for inserting at least one binding thread ( 16 ) above, between and below these channels. The loom includes at least one element for gripping the at least one binding thread and element for moving the at least one gripping element out of and into the weaving area ( 18 ) so as to place the at least one gripping element in contact with the at least one binding thread and to allow the drawing of the at least one binding thread.

ADVANCED COMPOSITE HEATED FLOOR PANEL

A composite panel suitable for heating an environment includes a face sheet having a 3D woven structure and abutting the environment, and a first core layer positioned on a side of the face sheet opposite the environment. The 3D woven structure includes at least one z-fiber extending in a first direction, the first direction representing a thickness of the face sheet. The woven structure further includes a plurality of weft layers, each having a weft fiber extending in a second direction, and a warp layer disposed between the plurality of weft layers, the warp layer having a warp fiber extending in a third direction. The z-fiber extends along the plurality of weft layers across a full extent of the 3d woven structure in the first direction. 1. A composite panel suitable for heating an environment , the panel comprising: at least one z-fiber extending in a first direction, the first direction representing a thickness of the face sheet;', 'a plurality of weft layers, each of the weft layers comprising a weft fiber extending in a second direction;', 'a warp layer disposed between the plurality of weft layers, the warp layer comprising a warp fiber extending in a third direction;', 'wherein the at least one z-fiber extends along the plurality of weft layers across a full extent of the 3D woven structure in the first direction; and, 'a face sheet abutting the environment and comprising a 3D woven structure, the 3D woven structure comprisinga first core layer positioned on a side of the face sheet opposite the environment.2. The panel of claim 1 , wherein the first core layer comprises a high-density honeycomb core formed from aluminum.3. The panel of and further comprising claim 2 , a second core layer disposed on a side of the first core layer opposite the face sheet.4. The panel of claim 3 , wherein the second core layer comprises a polymer foam or polymer honeycomb.5. The panel of claim 1 , wherein the at least one z-fiber is formed from a glass claim 1 , aramid claim ...

Method for the production of a curved ceramic sound attenuation panel

A method of fabricating a sound attenuation panel of curved shape, the method including impregnating a fiber structure defining a cellular structure with a ceramic precursor resin; polymerizing the ceramic precursor resin while holding the fiber structure on tooling presenting a curved shape corresponding to the final shape of the cellular structure; docking the cellular structure with first and second skins, each formed by a fiber structure impregnated with a ceramic precursor resin, each skin being docked to the cellular structure before or after polymerizing the resin of the skins; pyrolyzing the assembly constituted by the cellular structure and the first and second skins; and densifying the assembly by chemical vapor infiltration.

Turbomachine blade and method for the manufacture of same

A blade of a turbomachine includes a blade body of composite material having a fiber reinforcement having a three-dimensional weave and densified by a matrix, the reinforcement having a first part extended by a second, end, part including two segments separated from each other; and an insert having a pi-shaped section, the insert having a platform part and two longitudinal flanges separated from each other, the platform part including a housing delimited by a bottom wall and a rim, the bottom wall including an opening communicating with the space between the two flanges, the first part of the fiber reinforcement being clamped between the two flanges of the insert, the segments of the second part of the fiber reinforcement being folded against the bottom wall of the housing.

METHOD FOR MANUFACTURING A ONE-PIECE PREFORM FOR A COMPOSITE STRUCTURE

A method for producing a one-piece preform for a composite structure includes the following steps: positioning a plurality of bundles of warp threads over two pairs of harnesses; making movements of low amplitude of each of the pairs of harnesses so as to make at least two adjacent and separate layers; and making movements of higher amplitude of the pairs of harnesses so as to at least partially link the at least two adjacent layers to an least one portion of the preform. 1. A method for producing a one-piece preform for composite structure comprising said one-piece preform forming a reinforcement of the composite structure and a matrix , wherein said one-piece preform is achieved by a three-dimensional weaving method using a weaving loom , and the weaving loom comprises at least one reed and at least two pairs of harnesses , each of the harnesses comprising a plurality of heddles , and each of the heddles being equipped with a plurality of eyelets of which each one is a passage of a warp yarn , the at least two pairs of harnesses being distributed at distinct altitudes from the weaving loom so as to form a plurality of levels , said method comprising the following steps:positioning a plurality of bundles of warp yarns on the at least two pairs of harnesses;movements of low amplitude of each of the at least two pairs of harnesses for a predetermined length of said warp yarns, in such a manner that, during an introduction of weft yarns, at least two adjacent layers are achieved, independent on at least one portion of the one-piece preform; andmovements of increased amplitude, with respect to said movements of low amplitude, of the at least said two pairs of harnesses, for a predetermined length of said warp yarns, in such a manner that during the introduction of the weft yarns, the at least two adjacent layers are at least partly linked on at least one portion of the one-piece preform.2. The method for producing a one-piece preform for composite structure according ...

Three Dimensional Weave Fabric

A three dimensional weave fabric material is disclosed for use in producing garments and other items. The three dimensional weave fabric material comprises two layers of material, a face layer and back layer. The face layer and the back layer are then woven together via floating threads to create predetermined patterns or areas where the two layers are not woven together. These areas which are not woven together create tubes. Specifically, the weaving is controlled by a computer program that will weave or not weave the two layers together. Once the weaving is complete, the three dimensional weave fabric material is heat treated. The heat treating process shrinks the floating threads, causing manipulation of the tube. Specifically, the tube puffs or stands up more than if there was no heat treatment. Additionally, the tubes can be filled with fibers or other suitable materials to make the puffed areas more firm. 1. A three dimensional weave fabric material for garments , comprising:a face layer; anda back layer;wherein the face layer is woven to the back layer via a plurality of threads to create a predetermined pattern; andwherein the predetermined pattern comprises areas where the face layer and the back layer are not woven together.2. The three dimensional weave fabric of claim 1 , wherein the weaving is controlled by a computer program that will weave or not weave the face layer and the back layer together.3. The three dimensional weave fabric of claim 1 , wherein the areas where the face layer and the back layer are not woven together form tubes.4. The three dimensional weave fabric of claim 3 , wherein the tubes are manipulated a heat shrinking process.5. The three dimensional weave fabric of claim 4 , wherein the heat shrinking process shrinks the threads claim 4 , causing the tubes to puff.6. The three dimensional weave fabric of claim 5 , wherein the tubes are filled with fibers to add texture.7. The three dimensional weave fabric of claim 1 , wherein the ...

REAR FAIRING FOR A TURBOJET ENGINE PYLON MADE OF COMPOSITE MATERIALS

An rear fairing for a pylon supporting an aircraft turbojet engine forms an aerodynamic surface covering the base of the pylon. The rear fairing is elongated in a longitudinal direction and includes a floor arranged opposite the hot gases exiting the turbojet engine and side walls constituting aerodynamic surfaces. The floor and the side walls include ceramic matrix composite materials made from preforms formed by layers of superimposed warp and weft yarns, the preforms have interlayer weaving yarns connecting the layers to one another. 2. The rear fairing according to claim 1 , wherein the warp or weft threads forming the preform are disposed in columns extending in the longitudinal direction claim 1 , and the superimposed layers of the warp or weft threads forming the preform are connected to each other with different transversely disposed inter-layer weaving threads claim 1 , which connect different columns of the warp or weft threads claim 1 , along the longitudinal direction.3. The rear fairing according to claim 1 , wherein:the different superimposed layers of warp or weft threads forming the edges are connected to each other and the floor by transverse inter-layer weaving threads, andthe superimposed layers of warp or weft threads of the floor are connected to the superimposed layers of warp or weft threads of the lateral walls by inter-layer weaving threads such that the warp or weft threads of the floor, the lateral walls, and the edges form a single preform.4. The rear fairing according to further comprising transverse partitions fastened on the floor.5. The rear fairing according to claim 4 , wherein the transverse partitions are made from a preform integrally formed with the preform of the floor.6. The rear fairing according to claim 5 , wherein on a top of the preform of the floor includes transverse partitions claim 5 , which are connected to the preform of the floor by transverse folding lines.7. The rear fairing according to claim 1 , wherein the ...

Integral Ceramic Matrix Composite Fastener With Polymer Rigidization

A gas turbine engine component includes a gas turbine engine component body formed of a ceramic matrix composite material having at least one fastener integrally formed with the gas turbine engine component body as a single-piece structure. The gas turbine engine component body initially comprises a rigidized preform structure formed from a polymer based material. The at least one fastener connects the gas turbine engine component body to an engine support structure. 1. A gas turbine engine component comprising:a gas turbine engine component body formed of a ceramic matrix composite material having at least one fastener integrally formed with the gas turbine engine component body as a single-piece structure, wherein the gas turbine engine component body initially comprises a rigidized preform structure formed from a polymer based material; andan engine support structure, wherein the at least one fastener connects the gas turbine engine component body to the engine support structure.2. The gas turbine engine component according to wherein the rigidized preform structure has an opening to receive the fastener claim 1 , and wherein the fastener initially comprises a separate woven fastener formed from a fiber based material claim 1 , and wherein the woven fastener is received within the opening of the rigidized preform and subsequently infiltrated with a matrix material to form the single-piece structure as a finished component.3. The gas turbine engine component according to wherein the rigidized preform structure includes the polymer based material prior to forming the opening.4. The gas turbine engine component according to wherein the single-piece structure that forms the finished component does not include the polymer based material.5. The gas turbine engine component according to wherein the rigid perform structure is oxidized to remove the polymer based material prior to being infiltrated with the matrix material.6. The gas turbine engine component according to ...

ABRASIVE PRODUCTS COMPRISING IMPREGNATED WOVEN FABRIC AND ABRASIVE PARTICLES

An abrasive product comprising an impregnated woven fabric comprising: a) A first layer of first uncrimped weft multifilaments (-) b) a second layer of second uncrimped weft multifilaments (-); wherein for each of the first uncrimped weft multifilaments (-) there is one corresponding second uncrimped weft multifilament (-), and vice versa, to form successive multifilament pairs () of first and second uncrimped weft multifilaments; c) crimped warp filaments (41-44) having four different weave types d-c4, but each weave type consisting of entwining around first uncrimped weft multifilaments; passing between first and second uncrimped weft multifilaments; entwining around second uncrimped weft multifilaments; and passing again between first and second uncrimped weft multifilaments; d) uncrimped warp filaments () passing between first (-) and second (-) uncrimped weft multifilaments of all multifilament pairs (). The abrasive product furthermore comprises either a first particulate abrasive material () embedded into the first topmost surface () of the first top layer (), or a prefabricated abrasive sheet () comprising a matrix material, a first top sheet surface () and first abrasive particles () embedded into the first top sheet surface (). 1. An abrasive product comprising{'b': '6', 'claim-text': [{'b': 301', '308, 'a) A first layer (A) of first uncrimped weft multifilaments (-) running essentially in parallel to each other and being spaced apart from each other by a distance D;'}, {'b': 309', '316, 'b) a second layer (B) of second uncrimped weft multifilaments (-) running essentially in parallel to each other and being spaced apart from each other by said distance D;'}, {'b': 301', '308', '309', '316', '301', '309', '302', '310', '303', '311', '304', '312', '305', '313', '306', '314', '307', '315', '308', '316, 'wherein for each of the first uncrimped weft multifilaments (-) there is one corresponding second uncrimped weft multifilament (-), and vice versa, to form ...

WOVEN FABRIC HAVING A PLURALITY OF WOVEN FABRIC LAYERS

A woven fabric having at least three layers that are arranged one above the other. Two of the layers form a first and a second woven fabric layer that each comprises electrically conductive warp threads and/or weft threads. Another one of the layers forms an intermediate layer that is arranged between the first and second woven fabric layers. The first and the second woven fabric layers, together with the intermediate layer, form a sensor arrangement that comprises an electrical characteristic that changes when a force is acting upon the layers. The first and second woven fabric layers each comprises electrically conductive strips and electrically non-conductive strips that extend in a warp direction (K) or in a weft direction (S), with the strips being arranged adjacent to one another in an alternating manner. The strips of the second woven fabric layer extend in a transverse manner with respect to the strips of the first woven fabric layer. 1. A woven fabric having at least three layers that are arranged one above the other ,wherein one of the layers forms a first woven fabric layer that comprises electrically conductive warp threads and/or weft threads,wherein a further one of the layers forms a second woven fabric layer that comprises electrically conductive warp threads and/or weft threads,wherein another further one of the layers forms an intermediate layer that is arranged between the first woven fabric layer and the second woven fabric layer,wherein the first woven fabric layer, the second woven fabric layer and the intermediate layer form a sensor arrangement that comprises an electrical characteristic that changes while a force is acting upon the layers,wherein the first woven fabric layer comprises electrically conductive strips and electrically non-conductive strips that extend in a warp direction (K) or in a weft direction (S), said strips being arranged adjacent to one another in an alternating manner, and wherein the second woven fabric layer ...

THREE- DIMENSIONAL WOVEN FABRIC IMPLANT DEVICES

A docking device includes a hollow cylindrical body portion having an internal surface and an outer surface. The hollow cylindrical body portion is formed of a three-dimensional (3D) woven fabric comprising a plurality of different types of fibers. 1. A docking device comprising:a hollow cylindrical body portion having an internal surface and an outer surface;wherein the hollow cylindrical body portion is formed of a three-dimensional (3D) woven fabric comprising a plurality of different types of fibers.2. The docking device of claim 1 , wherein the plurality of different types of fibers comprise:a shape memory type of fiber;a low-melt thermoplastic type of fiber; anda high-tenacity biocompatible type of fiber.3. The docking device of claim 2 , wherein the 3D woven fabric has an orthogonal weave structure.4. The docking device of claim 3 , wherein the orthogonal weave structure includes:warp fibers of a first type of fiber of the plurality of different types of fibers in a fabric length direction;weft filing fibers of a second type of fiber of the plurality of different types of fibers inserted between length layers of the warp fibers; andthrough-the-thickness fibers of a third type of fiber of the plurality of different types of fibers interconnecting layers of the weft filling fibers.5. The docking device of claim 4 , wherein:the first type of fiber is the high-tenacity biocompatible type of fiber;the second type of fiber is the shape memory type of fiber; andthe third type of fiber is the low-melt thermoplastic type of fiber.6. The docking device of claim 5 , wherein:the high-tenacity biocompatible type of fiber comprises polyethylene terephthalate (PET) and is configured to provide durability and promote tissue growth for the 3D woven fabric;the shape memory type of fiber comprises nickel titanium alloy; andthe low-melt thermoplastic type of fiber comprises nylon and is configured to fuse woven layers of the 3D woven fabric together.7. The docking device of ...

WOVEN CLOTH

The woven cloth includes a plurality of first threads, a plurality of second threads, and a plurality of third threads. Each first thread and each second thread are woven by a plurality of filaments respectively. Each first thread is interwoven with and ties the plurality of second threads and is interwoven with and ties at least part of the plurality of third threads. The third threads are not interwoven with the plurality of the second threads. 1. A woven cloth , including: a plurality of first threads , a plurality of second threads , and a plurality of third threads; each of the plurality of first threads and each of the plurality of second threads woven by a plurality of filaments respectively; each of the plurality of first threads interwoven with and tie the plurality of second threads and interwoven with and tie at least part of the plurality of third threads; the third threads being not interwoven with the plurality of second threads.2. The woven cloth of claim 1 , wherein the plurality of first threads are spaced in intervals claim 1 , the plurality of second threads are spaced in intervals and interwoven with the plurality of first threads to form a plurality of meshes claim 1 , and at least part of each of the plurality of third threads passes through and protrudes out of at least one of the plurality of meshes.3. The woven cloth of claim 1 , wherein each of the plurality of third threads is greater than each of the plurality of first and second threads in outer diameter.4. The woven cloth of claim 1 , wherein each of the plurality of third threads is softer than each of the plurality of first and second threads.5. The woven cloth of claim 1 , wherein at least part of each of the plurality of first threads forms a loop which ties around at least one of the plurality of second threads and at least one of the plurality of third threads.6. The woven cloth of claim 1 , wherein each of the plurality of third threads has a plurality of wave crests and a ...

FIBER BLANK WOVEN AS A SINGLE PIECE BY THREE-DIMENSIONAL WEAVING TO MAKE A CLOSED BOX-STRUCTURE PLATFORM OUT OF COMPOSITE MATERIAL FOR A TURBINE ENGINE FAN

A fiber blank woven as a single piece by three-dimensional weaving to make a closed box-structure platform out of composite material for a turbine engine fan. In each plane of the fiber blank, a set of warp yarns interlinks layers of weft yarns in first, second, and third portions of the fiber blank, while leaving a closed non-interlinked zone separating the first and second portions over a fraction of the dimension of the fiber blank in the warp direction between an upstream non-interlinking limit and a downstream non-interlinking limit, and while leaving at least one open non-interlinked zone separating the second and third portions over a fraction of the dimension of the fiber blank in the warp direction from a non-interlinking limit to a downstream edge of the fiber blank. A method of fabricating a preform for the closed box-structure platform can use such a fiber blank. 1. A fiber blank woven as a single piece by three-dimensional weaving for making a platform of closed box structure out of composite material for a turbine engine fan , the fiber blank having opposite surfaces and comprising:a first portion, a second portion, and a third portion, each comprising a plurality of layers of weft yarns and each forming a portion of the thickness of the fiber blank between its opposite surfaces, the weft yarns of the fiber blank being arranged in columns, each column having weft yarns in all three portions; a closed non-interlinked zone separating the first portion from the second portion over a fraction of the dimension of the fiber blank in the warp direction between an upstream non-interlinking limit and a downstream non-interlinking limit; and', 'at least one open non-interlinked zone separating the second portion from the third portion over a fraction of the dimension of the fiber blank in the warp direction from a non-interlinking limit to a downstream edge of the fiber blank;, 'in each plane of the fiber blank, a set of warp yarns interlinking the layers of ...

FULLY-FORMED VOLUMETRICALLY WOVEN ARTICLE

A volumetric weaving approach employs a vertical aspect of woven warp and weft fibers to generate volumetric structures through formation of tie-downs. Tie downs define warp and weft fibers that take a vertical path or component extending perpendicular to a weave plane. Independently controlled heddles provide selective warp fibers control, and a two-dimensional creel that dispenses the warp fibers at differing feed rates allows manipulation of the fibers into three dimensional structures or portions. As a shuttle draws the weft fiber, different layers are raised and lowered to lend a vertical axis to the resulting volumetric structure. Interconnections between the portions include the use of the tie downs to connect multiple portions to define 3-dimensional panels of a finished article such as a shoe. A single pass defining all the interconnected portions of the shoe generates the fully formed shoe without subsequent cutting and seaming of different textile panels. 1. In an automated weaving apparatus responsive to a file of weaving instructions , the file of weaving instructions including commands for directing heddles of a plurality of warp fibers from a creel of fibers having independent delivery rates , a method for single pass weaving of a footwear appliance , comprising:drawing a plurality of warp fibers from a creel;extending each fiber of the plurality of warp fibers through a respective heddle of a plurality of heddles, each heddle disposable in a vertical direction independently of the other heddles in the plurality of heddles for elevating the warp fiber extending therethrough;drawing a shuttle across the plurality of warp fibers in a directions substantially perpendicular to the warp fibers, the warp fibers defining a weave plane, the shuttle drawing a continuous weft fiber in a pass across the warp fibers;generating a plurality of portions, each of the portions based on a woven area of a finished 3 dimensional structure;joining each of the plurality of ...

Preform and Method for Reinforcing Woven Fiber Nodes

Preforms including fiber reinforced nodes for use in fiber reinforced composite structures and methods for making fiber reinforced composite structures. Preforms with woven fabric elements extending radially from a common node include at least one reinforcing fiber interwoven between at least two elements and passing through the node. A method of assembling preform structures using the preforms to provide a structure with reinforced nodes.

LACROSSE HEAD POCKET AND RELATED METHOD OF MANUFACTURE

A lacrosse head pocket and a related method of manufacture are provided to facilitate consistent, repeatable and/or custom manufacture of lacrosse equipment. The pocket can be constructed from multiple different sections joined with one another, or can be knitted, weaved or otherwise assembled on an automated assembly machine from strands, and/or can be formed as a unitary textile material having regions/sections with different physical and/or mechanical properties. The pocket can be integrally molded within portions of a lacrosse head to eliminate manually constructed connections between the pocket and lacrosse head. The lacrosse head can be integrally molded with a lacrosse handle to provide a one-piece unitary lacrosse stick. Related methods of manufacturing also are provided. 1. A method of making a lacrosse pocket comprising:utilizing at least one of a knitting and weaving process to form a unitary textile lacrosse pocket body on an automated pocket assembly machine;mechanically manipulating first strands of the unitary textile lacrosse pocket body with the assembly machine during the knitting process to form a predefined, three dimensional, concave shape in the lacrosse pocket body;mechanically manipulating second strands of the unitary textile lacrosse pocket body with the assembly machine during the knitting process, simultaneously with the mechanical manipulating of the first strands, to form at least one of a predefined, generally flat, planar shape in the lacrosse pocket body, and a predefined, three dimensional convex shape in the lacrosse pocket body.2. The method of wherein the mechanically manipulating the first strands with the assembly machine to form a predefined claim 1 , three dimensional claim 1 , concave shape in the lacrosse pocket body forms at least one of a concave shooting ramp and a concave middle pocket in the lacrosse pocket body.3. The method of wherein the mechanically manipulating the second strands with the assembly machine to form ...

LACROSSE HEAD POCKET AND RELATED METHOD OF MANUFACTURE

A lacrosse head pocket and a related method of manufacture are provided to facilitate consistent, repeatable and/or custom manufacture of lacrosse equipment. The pocket can be constructed from multiple different sections joined with one another, or can be knitted, weaved or otherwise assembled on an automated assembly machine from strands, and/or can be formed as a unitary textile material having regions/sections with different physical and/or mechanical properties. The pocket can be integrally molded within portions of a lacrosse head to eliminate manually constructed connections between the pocket and lacrosse head. The lacrosse head can be integrally molded with a lacrosse handle to provide a one-piece unitary lacrosse stick. Related methods of manufacturing also are provided. 1. A lacrosse pocket comprising:a pocket longitudinal axis;an upper pocket portion adapted to connect to a lacrosse head scoop;a lower pocket portion adapted to connect to a lacrosse head base;a middle pocket portion located between the upper portion and the lower portion;a unitary textile material extending from the upper portion to the pocket portion, the unitary textile material constructed from a plurality of strands, the unitary textile material including a first region and a second region joined with one another as parts of the same unitary textile material, the first region having a first set of properties, the second region having a second set of properties different from the first set of properties.2. The lacrosse pocket of claim 1 ,wherein the first region has a first elasticity,wherein the second region has a second elasticity less than the first elasticity.3. The lacrosse head pocket of wherein the unitary textile material is at least one of a weaved fabric and a knitted fabric.4. The lacrosse pocket of comprising a frame constructed from a polymeric material claim 1 , the frame encapsulating some portions of the textile material claim 1 , the frame not encapsulating other ...

LACROSSE HEAD POCKET AND RELATED METHOD OF MANUFACTURE

A lacrosse head pocket and a related method of manufacture are provided to facilitate consistent, repeatable and/or custom manufacture of lacrosse equipment. The pocket can be constructed from multiple different sections joined with one another, or can be knitted, weaved or otherwise assembled on an automated assembly machine from strands, and/or can be formed as a unitary textile material having regions/sections with different physical and/or mechanical properties. The pocket can be integrally molded within portions of a lacrosse head to eliminate manually constructed connections between the pocket and lacrosse head. The lacrosse head can be integrally molded with a lacrosse handle to provide a one-piece unitary lacrosse stick. Related methods of manufacturing also are provided. 1. A method of making a lacrosse pocket comprising:providing a first pattern in a flat, two dimensional form, the first pattern including a first pattern first edge and a first pattern second edge disposed across from one another on opposite sides of a first pattern longitudinal axis;providing a second pattern in a flat, two-dimensional form, the second pattern including a second pattern first edge and a second pattern second edge disposed across from one another on opposite sides of a second pattern longitudinal axis, the second pattern defining a first void between the second pattern first edge and the second pattern second edge;positioning the first pattern within the first void of the second pattern;joining the first pattern first edge with the second pattern first edge;joining the first pattern second edge with the second pattern second edge;wherein the joining of the first pattern first edge with the second pattern first edge and the joining of the first pattern second edge with the second pattern second edge translates at least one of the first pattern and the second pattern from the flat two-dimensional to a contoured three-dimensional lacrosse pocket including a middle pocket ...

WOVEN TUBULAR THERMAL SLEEVE AND METHOD OF CONSTRUCTION THEREOF

A thermal sleeve for routing and protecting elongate members and method of construction thereof are provided. The sleeve has a tubular woven wall extending along a central axis between opposite open ends with an outer reflective foil layer fixed thereto. The wall is woven with lengthwise extending warp yarns and circumferentially extending fill yarns. The fill yarns include first and second fill yarns bundled in side-by-side abutting relation as a single pick, thereby forming discrete single pick bundles in axially spaced relation from one another. The first fill yarn is provided as a standard monofilament, while the second fill yarn is provided having a low melt material melted and bonded to the abutting first fill yarn and to portions of the abutting warp yarns, wherein the spaces between the discrete bundles remain substantially free of melted material, thereby further enhancing longitudinal flexibility of the sleeve. 1. A textile sleeve for routing and protecting elongate members , comprising:an elongate, tubular woven wall extending along a central axis between opposite open ends with an outer layer of reflective foil fixed thereto, said wall including warp yarns extending parallel to the central axis and fill yarns extending transversely to said warp yarns, said fill yarns including a first fill yarn bundled with a second fill yarn in side-by-side abutting relation to form discrete bundles extending circumferentially about said central axis, said first fill yarn having a first melt temperature, said second fill yarn having an outer surface of low melt material having a second melt temperature less than said first melt temperature, said low melt material being melted and bonded to said first fill yarn and to abutting portions of said warp yarns.2. The textile sleeve of claim 1 , wherein said second fill yarn is a bicomponent monofilament having a heat-settable core claim 1 , said heat-settable core being heat-set and providing said wall with increased hoop ...

Method for manufacturing a turbomachine blade made of composite material

A method of fabricating a turbine engine blade out of composite material including fiber reinforcement densified by a matrix, the method including using multilayer weaving to make a first fiber that has a first portion forming a blade root preform and extended by a second portion, the second portion forming a tenon preform; using multilayer weaving to make a second fiber preform, the second preform including a first portion made up of two skins defining between them an internal housing, the first portion forming an airfoil preform, and a second portion extending from an outside surface of the skins, the second portion forming a platform preform; assembling the first preform with the second preform in the non-consolidated state by engaging the second portion of the first preform in the internal housing; and co-densifying the first and second preforms as assembled together in this way to obtain a turbine engine blade.

LACROSSE HEAD POCKET AND RELATED METHOD OF MANUFACTURE

A lacrosse head pocket and a related method of manufacture are provided to facilitate consistent, repeatable and/or custom manufacture of lacrosse equipment. The pocket can be constructed from multiple different sections joined with one another, or can be knitted, weaved or otherwise assembled on an automated assembly machine from strands, and/or can be formed as a unitary textile material having regions/sections with different physical and/or mechanical properties. The pocket can be integrally molded within portions of a lacrosse head to eliminate manually constructed connections between the pocket and lacrosse head. The lacrosse head can be integrally molded with a lacrosse handle to provide a one-piece unitary lacrosse stick. Related methods of manufacturing also are provided. 1. A method of making a lacrosse head pocket comprising:coupling a first plurality of strands to a knitting machine;mechanically manipulating the first plurality of strands with the knitting machine during a knitting process to form a first predefined, three dimensional shape in a first unitary textile lacrosse pocket body as a result of the knitting process;mechanically manipulating the first plurality of strands with the knitting machine during the knitting process to form a second predefined, three dimensional shape in a second lacrosse pocket body as a result of the knitting process, the second lacrosse pocket body being joined with the first lacrosse pocket body via at least one strand to form a strip of lacrosse pockets; anddecoupling the first lacrosse pocket body from the second lacrosse pocket body,wherein upon the decoupling, the first lacrosse pocket body retains the first predefined, three dimensional shape in the first lacrosse pocket body.2. The method of comprising;knitting a first upper edge in the first lacrosse pocket body;knitting a second lower edge in the second lacrosse pocket body, the first upper edge being joined with the second lower edge at an edge interface, ...

LACROSSE HEAD POCKET AND RELATED METHOD OF MANUFACTURE

A lacrosse head pocket and a related method of manufacture are provided to facilitate consistent, repeatable and/or custom manufacture of lacrosse equipment. The pocket can be constructed from multiple different sections joined with one another, or can be knitted, weaved or otherwise assembled on an automated assembly machine from strands, and/or can be formed as a unitary textile material having regions/sections with different physical and/or mechanical properties. The pocket can be integrally molded within portions of a lacrosse head to eliminate manually constructed connections between the pocket and lacrosse head. The lacrosse head can be integrally molded with a lacrosse handle to provide a one-piece unitary lacrosse stick. Related methods of manufacturing also are provided. 1. A method of making a lacrosse head pocket comprising:coupling a first plurality of strands to a machine;mechanically manipulating the first plurality of strands with the machine during a process to form a first predefined, three dimensional shape in a first unitary textile lacrosse pocket body as a result of the process;mechanically manipulating the first plurality of strands with the machine during the process to form a second predefined, three dimensional shape in a second lacrosse pocket body as a result of the process, the second lacrosse pocket body being joined with the first lacrosse pocket body via at least one strand to form a strip of lacrosse pockets; anddecoupling the first lacrosse pocket body from the second lacrosse pocket body,wherein upon the decoupling, the first lacrosse pocket body retains the first predefined, three dimensional shape in the first lacrosse pocket body.2. The method of comprising;knitting a first upper edge in the first lacrosse pocket body;knitting a second lower edge in the second lacrosse pocket body, the first upper edge being joined with the second lower edge at an edge interface,wherein the decoupling step includes decoupling the first upper edge ...

FIBER COMPOSITE MATERIAL AND PREFORM AND FAN BLADE MADE THEREFROM

A fiber composite material comprises a polymer matrix, carbon fibers, and non-carbon fibers, wherein the non-carbon fibers have a strain to failure value greater than the strain to failure value of the carbon fibers. Also discussed is a preform comprising the fiber composite material combined in a three dimensionally woven structure. Also discussed is a fan blade for a jet engine. 1. A fiber composite material comprising a polymer matrix , carbon fibers , and non-carbon fibers , wherein the non-carbon fibers have a strain to failure value greater than the strain to failure value of the carbon fibers.2. The fiber composite material of claim 1 , wherein the non-carbon fiber has a strain to failure value greater than 1.5%.3. The fiber composite material of claim 1 , wherein the carbon fiber has a diameter of 3 to 10 micrometers.4. The fiber composite material of claim 1 , wherein non-carbon fiber is present in an amount of 1 to 5 volume percent claim 1 , based on the total fiber volume in the fan blade.5. The fiber composite material of claim 1 , wherein the non-carbon fiber comprises aramid fibers claim 1 , hollow polypropylene fibers claim 1 , polyamide fibers claim 1 , polyester fibers claim 1 , or a combination comprising two or more of the foregoing.6. The fiber composite material of claim 1 , wherein the carbon fiber and the non-carbon fiber are combined in a woven fabric claim 1 , a uniweave claim 1 , or a three dimensionally woven structure.7. The fiber composite material of claim 1 , wherein polymer matrix comprises an epoxy.8. The fiber composite material of claim 1 , wherein polymer matrix comprises a polyimide.9. A preform comprising a polymer matrix claim 1 , carbon fibers claim 1 , and non-carbon fibers combined in a three dimensionally woven structure having yarns extending in the X claim 1 , Y and Z directions claim 1 , wherein the yarns extending in the Z direction comprise non-carbon fibers and the non-carbon fibers have a strain to failure value ...

MANUFACTURING METHOD OF THERMOELECTRIC CONVERSION DEVICE HAVING TEXTILE STRUCTURE

A manufacturing method of a thermoelectric conversion device having a textile structure. The thermoelectric conversion device having a textile structure uses one or multiple types of thermoelectric yarns as thermocouples of a thermoelectric generator structure, and uses elastic insulating yarns as a main carrier portion of a textile article. The invention utilizes the characteristic of a textile article of having woven and overlapping warp and weft yarns, and the thermoelectric yarns are woven into a thermoelectric generator textile article by using a conventional weaving technique. The thermoelectric transfer performance and the performance of the main carrier thereof are adjusted by varying an interweaving structure of the textile article, placement positions of the thermoelectric yarns, and the length of the thermocouples thereof. The present invention is widely and flexibly applicable in the fields of sports and health, medical smart apparel, smart homes, wearable touch screens, electronics, even automobiles, architectures, and the like. 1. A method of manufacturing a thermoelectric conversion device having textile structure , comprising:1) preparing an N-type, P-type, and PN-type thermoelectric yarn using a direct method, an indirect method, or a combination thereof; and2) weaving the thermoelectric yarn with certain elasticity and weavability, to yield a thermoelectric fabric with thermoelectric power generation function.2. The method of claim 1 , wherein the thermoelectric yarn comprises a conductive component which employs an inorganic thermoelectric fabric claim 1 , an organic thermoelectric fabric claim 1 , or a mixture thereof.3. The method of claim 1 , wherein the thermoelectric yarn is a core-spun yarn structure or homogeneous structure along a yarn diameter direction.4. The method of claim 1 , wherein the thermoelectric yarn comprises a conductive component which employs an inorganic thermoelectric fabric claim 1 , an organic thermoelectric fabric ...

WOVEN FIBROUS TEXTURE

A fibrous texture intended to form the fibrous reinforcement of a turbomachine part, includes first yarns bonded with second yarns, and at least one vibration damping element of viscoelastic material present in a recess defined by a second de-bonding zone, the de-bonding zone separating, on a portion of the texture, a first surface part of the texture from a second part of the texture formed by a three-dimensional fabric in which the first yarns are bonded with the second yarns, the first surface part of the texture being formed by a unidimensional layer of first yarns or being formed by a two-dimensional fabric in which the first yarns are bonded with the second yarns.

SYSTEMS AND METHODS FOR CREATING TOPOGRAPHICAL WOVEN FABRIC

Provided are systems and methods for producing seamless woven materials that are variable in each of their 3 dimensions. The systems and methods generally operate by altering heddle positions independently to impart three dimensional structure to a woven fabric. Weft yarn is woven into a set of warp yarns that have been individually raised or lowered along a particular cross section, essentially locking the weave into an intended 3 dimensional form. 1. An actuator system configured to be used in combination with a loom , comprising:a. a plurality of motors; andb. a plurality of couplings coupled to the plurality of motors, wherein the plurality of couplings are arranged in a configuration that allows one or more heddles of the loom to be individually controlled and actuated continuously between a plurality of positions.2. The system of claim 1 , wherein each motor is mechanically coupled to one coupling.3. The system of claim 1 , wherein each motor is coupled to one heddle.4. The system of claim 1 , wherein each coupling reduces an angular velocity imparted to one or more coupled motors claim 1 , the angular velocity associated with one or more torques due to a gravitational force or a spring force imparted on one or more heddles.5. The system of claim 1 , wherein each coupling comprises a gear reduction component and a pulley system.6. The system of claim 4 , wherein the pulley system is threaded or non-threaded.7. The system of claim 4 , wherein the gear reduction component is disposed between a motor and the pulley component.8. The system of claim 4 , wherein the gear reduction component comprises at least two gears of different pitch diameters or different numbers of teeth.9. The system of claim 4 , wherein the gear reduction component reduces a torque-induced turning of a motor.10. The system of claim 4 , wherein the gear reduction component comprises a 10:1 claim 4 , 20:1 claim 4 , 50:1 claim 4 , or 100:1 gear reduction ratio.11. The system of claim 1 , ...

FOLDED COMPOSITE PREFORMS WITH INTEGRATED JOINTS

Systems and methods fabricate composite preforms in a flat or unfolded format. Following fabrication, the preform is folded and placed in or around a mold for curing. To facilitate folding and produce strong parts, the preform is fabricated with integrated, 3D woven joints at preform edges. These joints connect the folded preform portions to other parts of the preform, such as other unfolded or folded preform portions or internal features. Integrated joints may be flexible to facilitate assembly prior to curing. The unfolded preform design may be generated from a preform model by splitting the preform model at an initial joint location, unfolding the preform model into an unfolded preform, creating joint connectors in the unfolded preform at the initial joint location, determining a fiber layup of the unfolded preform, and generating fabrication data. 1. A composite preform comprising:a foldable section;a first joint connection section connected with the foldable section and including a first joint connector; anda second joint connection section including a second joint connector adapted to interlock with at least a portion of the first joint connector;wherein the first joint connection section and the foldable section are constructed at least in part from first fibers; andwherein the second joint connection section is constructed at least in part from second fibers.2. The composite preform of claim 1 , wherein the first fibers are three-dimensionally woven to form at least portions of the first joint connection and the foldable section.3. The composite preform of claim 1 , wherein the second joint connector is connected with the foldable section and the foldable section is constructed at least in part from the second fibers.4. The composite preform of claim 1 , wherein composite preform includes at least one non-foldable section.5. The composite preform of claim 4 , wherein the second joint connector is connected with the non-foldable section and the non-foldable ...

Method of weaving textile articles, and device for carrying out said method

Disclosed is a method of manufacturing a textile article from a continuous thread-type element, a device for manufacturing said textile article, and a textile article obtained by such method.

FIBER-REINFORCED COMPOSITE PART WITH INCREASED VIBRATION RESISTANCE

A part of a turbomachine made of composite material includes a fiber reinforcement having a three-dimensional weaving including a first set of yarns made of a first material, wherein the fiber reinforcement includes a vibration-damping element formed by a second set of yarns including a second material which is viscoelastic and which is different to the first material, the second set of yarns being woven with the first set of yarns. 1. A part for a turbomachine made of composite material comprising a fiber reinforcement having a three-dimensional weaving comprising a first set of yarns made of a first material , wherein the fiber reinforcement comprises a vibration-damping element formed by a second set of yarns comprising a second material which is viscoelastic and which is different to the first material , the second set of yarns being woven with the first set of yarns.2. The part as claimed in claim 1 , wherein the second material is made of a viscoelastic material having a shear loss factor greater than or equal to 0.2 over a temperature range between −50° C. and 120° C. claim 1 , the shear loss factor being determined by imposing a sinusoidal shear stress of a frequency equal to 100 Hz.3. The part as claimed in claim 1 , wherein the first set of yarns is woven in a first weaving pattern which is three-dimensional claim 1 , the second set of yarns being woven in a second weaving pattern which is different to the first weaving pattern.4. The part as claimed in claim 3 , wherein the first set of yarns has a first warp shrinkage angle and the second set of yarns has a second warp shrinkage angle claim 3 , the first warp shrinkage angle being different to the second warp shrinkage angle.5. The part as claimed in claim 4 , wherein the second warp shrinkage angle is greater than the first warp shrinkage angle.6. The part as claimed in claim 1 , wherein the fiber reinforcement comprises at least a first portion composed of the first set of yarns claim 1 , and at least ...

A WOVEN FIBER STRUCTURE PRESENTING A SATIN WEAVE ON AT LEAST ONE OF ITS OUTSIDE FACES

A woven fiber structure presenting over at least one of its outside faces a satin weave formed by interlinking a first set of yarns with a second set of yarns; wherein the first set of yarns is in the majority over the outside face, the first set of yarns being formed by a mixture of yarns having an S-twist and of yarns having a Z-twist. 1. A woven fiber structure comprising yarns made of a carbon precursor and presenting over at least one of its outside faces a satin weave formed by interlinking a first set of yarns with a second set of yarns;wherein the first set of yarns is in the majority over the outside face, said first set of yarns being formed by a mixture of yarns having an S-twist and of yarns having a Z-twist; and wherein the structure includes over its outside face:a first yarn of the second set of yarns forming a first set of satin points;a second yarn of the second set of yarns, adjacent to the first yarn of the second set of yarns, and forming a second set of satin points, the satin points of the second set being offset from the satin points of the first set by a first spacing; anda third yarn of the second set of yarns, adjacent to the second yarn of the second set of yarns, and forming a third set of satin points, the satin points of the third set being offset from the satin points of the second set by a second spacing different from the first spacing.2. A woven fiber structure comprising yarns made of carbon and presenting over at least one of its outside faces a satin weave formed by interlinking a first set of yarns with a second set of yarns;wherein the first set of yarns is in the majority over the outside face, said first set of yarns being formed by a mixture of yarns having an S-twist and of yarns having a Z-twist; and wherein the structure includes over its outside face:a first yarn of the second set of yarns forming a first set of satin points;a second yarn of the second set of yarns, adjacent to the first yarn of the second set of yarns, ...

Three-Dimensional Woven Composite Vehicle Components for Crashworthiness

Described is a three-dimensional (3D) woven composites with high specific energy absorption (SEA) that significantly outperforms traditional two dimensional (2D) woven laminated composites of substantially the same weight. 1. A three-dimensional (3D) composite article comprising: a plurality of warp yarns;', 'a plurality of weft yarns, the warp yarns woven with the weft yarns to form a structure having a plurality of layers of the 3D woven preform;, 'a 3D woven preform, the preform comprisinga matrix material,wherein the 3D woven composite article has a specific energy absorption (SEA) greater than a 2D woven laminated preform of substantially the same weight, when each preform is impregnated with the matrix material to form the composite article.2. The 3D composite article of claim 1 , wherein the 3D woven composite article has the specific energy absorption (SEA) at least 10% greater than the 2D woven laminated preform of substantially the same weight.3. The 3D composite article of claim 1 , wherein the 3D woven composite article has the specific energy absorption (SEA) at least 20% greater than the 2D woven laminated preform of substantially the same weight.4. The composite article of claim 1 ,wherein one or more warp yarns selected from the plurality of warp yarns in a particular layer are first binder yarns that bind weft yarns in the particular layer to weft yarns in another layer, andwherein one or more weft yarns selected from the plurality of weft yarns in the particular layer are second binder yarns that bind warp yarns in the particular layer to warp yarns in the another layer.5. The composite article of claim 4 , wherein the another layer is an adjacent next layer to the particular layer.6. The composite article of claim 4 , wherein the another layer is not an adjacent next layer to the particular layer.7. The composite article of claim 4 , wherein the matrix material is selected from the group consisting of epoxy claim 4 , polyester claim 4 , vinyl- ...

AIRBAG BASE FABRIC AND MANUFACTURING METHOD THEREFOR

An airbag base fabric satisfying characteristics A to D: 19-. (canceled)10. A non-coated airbag base fabric satisfying characteristics A to D: {'br': None, 'i': 'WR=', '(major axis of warp thread cross section in textile)/(minor axis of warp thread cross section in textile) \u2003\u2003(1)'}, '(A) a cross-sectional deformation (WR), calculated by formula (1), of multifilament warp threads constituting a textile is 4.0 to 6.0,'} {'br': None, 'i': 'FR=', '(major axis of weft thread cross section in textile)/(minor axis of weft thread cross section in textile) \u2003\u2003(2)'}, '(B) a cross-sectional deformation (FR), calculated by formula (2), of multifilament weft threads constituting the textile is 2.4 to 4.0,'}(C) a single fiber cross-sectional shape of the multifilament threads constituting the textile is substantially circular, and(D) the multifilament threads constituting the textile have total fineness of 145 to 720 dtex, single fiber fineness of 2 to 7 dtex, and tensile strength of 6.5 to 8.5 cN/dtex.11. The airbag base fabric according to claim 10 , wherein the warp thread cross-sectional deformation (WR) calculated by formula (1) is 4.3 to 5.7 claim 10 , and the weft thread cross-sectional deformation (WR) calculated by formula (2) is 2.6 to 3.7.12. The airbag base fabric according to claim 10 , wherein static air permeability measured under a test differential pressure of 500 Pa according to a fragile form method of JIS L 1096 is 0.1 to 5.0 L/dm/min claim 10 , and dynamic air permeability measured according to ASTM D 6476-02 is 100 to 1000 mm/sec.13. The airbag base fabric according to claim 10 , wherein a warp thread cover factor (WCF) is calculated by formula (3) claim 10 , a weft thread cover factor (FCF) is calculated by formula (4) claim 10 , and a sum (CF) of WCF and FCF claim 10 , calculated by formula (5) claim 10 , is 2000 to 2400:{'br': None, 'i': 'WCF=', 'sup': '1/2', '(total fineness of warp threads constituting textile (dtex))×(Warp thread ...

Device for Measuring Pressure from a Flexible, Pliable, and/or Extensible Object Made from a Textile Material Comprising a Measurement Device

A device and method for measuring the pressure exerted at different points of a flexible, pliable and/or extensible fabric capable of being worn as a garment, lapel, or the like, which provides three stacked layers including a first insulating layer comprising an arrangement of insulating fibers and at least one row of at least one conductive yarn in contact with a first surface of a piezoresistive layer of fibers of a piezoresistive material, and a second insulating layer comprising an arrangement of insulating fibers, including at least one row of at least one conductive yarn, in contact with a second surface of the piezoresistive layer, and an electronic circuit capable of measuring the electric resistance variation when a pressure is exerted on the fabric, the pressure being a function of the resistance variation. 1. A device for measuring the pressure exerted at different points of a flexible , pliable , and/or extensible fabric capable of being worn as a garment , lapel , or the like , characterized in that it comprises at least three stacked layers , the at least three stacked layers including a first insulating layer comprising an arrangement of insulating fibers , and comprising at least one row of at least one conductive yarn in contact with a first surface of a piezoresistive layer comprising fibers of a piezoresistive material , and a second insulating layer comprising an arrangement of insulating fibers , and comprising at least one row of at least one conductive yarn , in contact with a second surface of the piezoresistive layer , and an electronic circuit capable of measuring the electric resistance variation when a pressure is exerted on the fabric , the pressure being a function of the resistance variation.2. The device of claim 1 , characterized in that the piezoresistive layer is obtained by knitting or weaving the fibers of a piezoresistive material.3. The device of claim 1 , characterized in that the piezoresistive layer comprises piezoresistive ...

MULTILAYER WOVEN FIBROUS STRUCTURE INCLUDING A HOLLOW TUBULAR PART, PRODUCTION METHOD THEREOF AND COMPOSITE PART COMPRISING SAME

A fiber structure made as a single piece by multilayer weaving using a method including weaving warp yarns of at least a first set of layers of warp yarns with weft yarns including at least some that are woven with extra length so as to have warp yarn end portions available that extend beyond the zone of weaving, the warp yarn end portions being returned to be woven with warp yarns by being reinserted in layers of warp yarns, and a hollow, or tubular, portion being formed by looping the first woven set of layers of warp yarns back onto itself and applying traction to the ends of the reinserted weft yarns so that a fiber preform for a part including a hollow portion can be obtained as a single piece. 1. (canceled)2. A method of making a structure woven as a single piece by multilayer weaving and including at least one hollow portion that is longitudinally partitioned , the method comprising:weaving warp yarns of a first set of layers of warp yarns with weft yarns including at least some that are inserted in layers of warp yarns of the first set of layers of warp yarns while being taken over a distance that is greater than a length of the first set of layers of warp yarns measured in a weft direction to have weft yarn end portions available that extend beyond a zone of weaving;weaving warp yarns of a second set of layers of warp yarns with weft yarns including at least some that are inserted in layers of warp yarns of the second set of layers of warp yarns while being taken over a distance that is greater than a length of the second set of layers of warp yarns measured in the weft direction to have weft yarn end portions available that extend beyond the zone of weaving, the first and second sets of layers of warp yarns being arranged one above another and being interlinked over a fraction only of their width in the weft direction;returning the weft yarn end portions so as to weave them with warp yarns by reinserting them in layers of warp yarns; andforming the ...

METHOD OF FABRICATING A COMPOSITE MATERIAL PART WITH IMPROVED INTRA-YARN DENSIFICATION

A method of fabricating a composite material part comprises fiber reinforcement densified by a matrix. The method comprises the following steps: making a fiber fabric by weaving yarns having an initial mean fiber percentage; and densifying the fiber fabric with a matrix. The fiber fabric is subjected, prior to densification, to one or more jets of water under pressure so as to reduce the mean fiber percentage in the fabric to a value lying in the range 20% to 45%. 18-. (canceled)9. A method of fabricating a composite material part comprising fiber reinforcement densified by a matrix , said method comprising the following steps:making a fiber fabric by weaving yarns, said fiber fabric having a determined initial mean fiber percentage; anddensifying the fiber fabric with a matrix;wherein said method further includes, prior to densifying the fiber fabric, a step of treating the fabric by subjecting said fabric to one or more jets of water under pressure so as to reduce the mean fiber percentage in the fabric to a value lying in the range 20% to 45%, and in that each water jet is delivered from a nozzle, the pressure of the water jet at the outlet from the nozzle being less than or equal to 100 bars, each nozzle being placed at a distance from the surface of the fiber fabric that is greater than or equal to 50 mm.10. A method according to claim 9 , wherein the fiber fabric is a multilayer fabric made by three-dimensional weaving of continuous yarns of carbon fibers claim 9 , of silicon carbide fibers claim 9 , or of oxide fibers.11. A method according to claim 9 , wherein it comprises claim 9 , prior to densifying the fiber fabric claim 9 , depositing an interphase on the fibers of said fiber fabric.12. A method according to claim 9 , wherein densification of the fiber fabric comprises chemical vapor infiltration of a matrix into said fabric.13. A method according to claim 9 , wherein densifying the fiber fabric comprises using a liquid technique to infiltrate a matrix ...

THREE DIMENSIONAL MEDICAL WOVEN FABRIC CONFIGURATION

A medical fabric obtained by a rapier loom such, having an upper fabric layer, a lower fabric layer and a hollow part defined between the lower fabric layer and the upper fabric layer in such a way to form a three dimensional structure in order to decrease the pressure exerted on the body parts of patients. The fabric has a dimensional surface which allows the upper fabric layer to form a textured structure by defining the hollow part due to the tension exerted on the lower fabric layer at the end of the loom. 1. A medical fabric obtained by means of a rapier loom such , comprising an upper fabric layer , a lower fabric layer and a hollow part defined between the said lower fabric layer and the upper fabric layer in such a way to form a three dimensional structure in order to decrease the pressure exerted on the body parts of patients , wherein , it comprises a dimensional surface which allows the upper fabric layer to form a textured structure by defining the said hollow part due to the tension exerted on the lower fabric layer at the end of the loom.2. A medical fabric according to claim 1 , wherein; it comprises first weft yarns and first warp yarns formed according to a draft plan obtained by drafting with a weaving repeat comprising plied yarns in order to define the said dimensional surface of the said upper fabric layer.3. A medical fabric according to claim 2 , wherein; the said first weft yarns and first warp yarns are Ne 50/2 pes and 78 dtex elastane blended elastane polyester.4. A medical fabric according to claim 1 , wherein; it comprises second weft yarns and second warp yarns formed according to 1/1 weaving repeat such that the said lower fabric layer defines a flat surface.5. A medical fabric according to claim 4 , wherein; the said weft yarns and second warp yarns are Ne 50/2 cotton.6. A medical fabric according to claim 1 , wherein claim 1 , a probiotic application process is applied to the said medical fabric.7. A medical fabric according to claim ...

"Power Air" Insulating Fabric

An improved insulating performance fabric has a double-knit body, formed with traditional, relatively smooth, outer surfaces, and an inner surface with the form of multiple fabric “bubbles” separated, e.g., by a grid pattern of intersecting grooves. An insulating, double-knit performance fabric of this disclosure may also be found in the form of a garment comprising the insulating, double knit performance fabric, or in the form of fabric article comprising the insulating, double knit performance fabric, etc. 1. An insulating , double-knit performance fabric element comprising:a first knit layer;a second knit layer coupled with the first knit layer; anda plurality of intermediate fiber regions containing a plurality of fibers and positioned between the first knit layer and the second knit layer, the plurality of intermediate fiber regions being positioned in a plurality of air pockets formed by at least one of the first knit layer and the second knit layer.2. The insulating claim 1 , double-knit performance fabric element of claim 1 , wherein the plurality of intermediate fiber regions comprise a plurality of regions of lofted fibers.3. The insulating claim 2 , double-knit performance fabric element of claim 2 , wherein the lofted fibers are un-napped and un-brushed.4. The insulating claim 2 , double-knit performance fabric element of claim 2 , wherein the lofted fibers are encapsulated in the plurality of air pockets loose.5. The insulating claim 2 , double-knit performance fabric element of claim 2 , wherein the lofted fibers extend in a direction having an orthogonal component with respect to the at least one of the first knit layer and the second knit layer.6. The insulating claim 2 , double-knit performance fabric element of claim 2 , wherein the lofted fibers are microfibers.7. The insulating claim 1 , double-knit performance fabric element of claim 1 , wherein the plurality of regions of lofted fibers are spaced apart from one another.8. The insulating claim 7 ...

PROPELLER BLADE OR VANE FOR AN AIRCRAFT WITH PARTICULAR WEAVING OF A FIBRE PREFORM RECEIVING A BLADDER FILLED WITH A SHAPING FOAM

A blade includes a fibrous reinforcement having a three-dimensional weave densified by a matrix, the fibrous reinforcement including, in a single woven piece, a root and an aerodynamic profile part extending along a longitudinal direction between the root part and a blade tip portion and along a transverse direction between a leading and a trailing edge portion. The profile part includes first and second suction side and pressure side faces. The fibrous reinforcement includes a separation forming a housing inside the fibrous reinforcement, a bladder filled with a shaping foam being present in the housing. The separation extends over a separation zone inside the profile part of the fibrous reinforcement comprised between the root part and the blade tip portion in the longitudinal direction and between the leading and the trailing edge portion in the transverse direction. The separation opens to the outside of the profile part. 1. An aircraft propeller blade or vane comprising a fibrous reinforcement having a three-dimensional weave between a plurality of warp yarn layers and a plurality of weft yarn layers , the fibrous reinforcement being densified by a matrix , the fibrous reinforcement comprising , in a single woven piece , a root part and an aerodynamic profile part extending along a longitudinal direction between the root part and a blade tip portion and along a transverse direction between a leading edge portion and a trailing edge portion , the aerodynamic profile part including first and second suction side and pressure side faces , the fibrous reinforcement including a separation forming a housing inside said fibrous reinforcement , propeller blade or vane wherein a bladder filled with a shaping foam is present in the housing , and wherein the separation extends over a separation zone inside the aerodynamic profile part of the fibrous reinforcement comprised between the root part and the blade tip portion in the longitudinal direction and between the leading ...

PILLOW ARTICLE, TEXTILE MATERIAL, AND RELATED METHODS

A textile article that includes a pillow case forming for a textile material includes a composition impregnated into the textile material. 1. A pillow article configured to provide a skin care benefit , the pillow article comprising:a pillow case including upper and a lower panels that define an internal space sized to receive a cushion member, the pillow case defining a first end, a second end spaced from the first end along a first direction, and opposed sides spaced apart with respect to each other along a second direction that is perpendicular to the first direction, and at least one of the sides defining a seam that connects the upper panel to the lower panel, the pillow case is configured to be opened to provide access to the inner space, each panel including a plurality of warp yarns and a plurality of weft yarns interwoven with the plurality of warp yarns to define a woven fabric, the woven fabric including a composition disposed thereon that includes a hyaluronic acid component.2. The pillow article of claim 1 , wherein the composition includes at least one of: an aloe vera component claim 1 , a vitamin E component claim 1 , and an antimicrobial component.3. The pillow article of claim 2 , wherein the composition includes the hyaluronic acid component claim 2 , the aloe vera component claim 2 , the vitamin E component claim 2 , and the antimicrobial component.4. The pillow article of claim 3 , wherein the hyaluronic acid component is disposed on the fabric at a percent add-on of about 0.03 wt. % to about 10 wt. %.5. The pillow article of claim 3 , wherein the aloe vera component is disposed on the fabric at a percent add-on of about 0.03 wt. % to about 15 wt. %.6. The pillow article of claim 3 , wherein the vitamin E component is disposed on the fabric at a percent add-on of about 0.03 wt. % to about 15 wt. %.7. The pillow article of claim 3 , wherein the antimicrobial component is disposed on the fabric at a percent add-on of about 0.03 wt. % to about 15 ...

WOVEN TEXTILE

A woven textile is provided, including at least two blocks connected with each other. Each of the two blocks has an upper layer and a lower layer which are woven and fixed by a binding thread, and the upper layer and the lower layer are respectively composed of woven braids which extend meanderingly. The textile braid of the upper layer and the textile braid of the lower layer define a plurality of meshes, and the textile braids of the two blocks have different heights so that the meshes on the two blocks have different dimensions. 1. A woven textile , having a first end and a second which is opposite to the first end , a connection of the first end and the second end defining a longitudinal direction , the woven textile including a first block and a second block which are connected with each other , the first and second blocks being arranged along the longitudinal direction , the woven textile further including at least one binding thread;wherein the first block includes a first upper layer and a first lower layer, the first upper layer includes at least one first woven braid, the first woven braid is woven by a plurality of woven threads and meanderingly extends to form a plurality of hollow-out portions, the first lower layer includes at least one second woven braid, the second woven braid is woven by a plurality of woven threads and meanderingly extends to form a plurality of hollow-out portions, and a overlapping part of the hollow-out portions of the first upper layer and the hollow-out portions of the first lower layer forms a plurality of first meshes;wherein the second block includes a second upper layer and a second lower layer, the second upper layer includes at least one third woven braid, the third woven braid is woven by a plurality of woven threads and meanderingly extends to form a plurality of hollow-out portions, the second lower layer includes at least one fourth woven braid, the fourth woven braid is woven by a plurality of woven threads and ...

THREE-DIMENSIONAL WOVEN CORNER FITTING WITH LAP JOINT PREFORMS

A three-dimensional corner lap joint preform and a method of forming a three-dimensional corner lap joint preform including a woven flange with one or more legs that extend from the flange. The legs may include one or more independently woven portions which allow formation of a corner without darting the leg or adding additional reinforcement. The independently woven portions may include warp fibers which are not woven into the preform. The unwoven area allows removal of a portion of the leg prior to formation of the corner, allowing the portions of the leg to overlap and form a lap joint. 1. A three-dimensional (3D) woven preform comprising:a planar flange comprising interwoven warp and weft fibers or yarns and having a first major surface, the planar flange having a cut location separating the planar flange into a first portion and a second portion;a first leg comprising the warp and weft fibers or yarns, the first leg extending from the first major surface of the flange, at least a portion of the leg comprising a plurality of independently woven layers arranged perpendicular to said major surface, a segment of each of the plurality of woven layers, which include at least one woven layer having warp fibers woven with weft fibers, being removed in either the first portion or the second portion adjoining the cut location; anda cut through the leg, a plane of the cut perpendicular to the flange and perpendicular to the leg along the cut location,wherein the first portion is at an angle to the second portion and the removed segments of each woven layer at least partially overlap.2. The preform of wherein the segment of each woven layer includes floats.3. The preform of wherein at least a portion of the segment including the floats is removed from each woven layer.4. The preform of wherein the layers of the first segment interdigitate with the layers of the second segment.5. The preform of further comprising:a second leg comprising the warp and weft fibers or yarns, ...

METHOD AND APPARATUS FOR WEAVING A THREE-DIMENSIONAL FABRIC

A method and apparatus for weaving a three-dimensional fabric involves inserting simultaneously a parallel weft yarns into the sheds between multiple warp yarn layers and selectively inserting at least one group of binder yarns between parallel spaced warp yarns. The group of binder yarns are moved relative to the warp yarns between weft insertions. The yarns may be moved between more than two positions relative to the warp yarns during weaving of the fabric so as to insert binder yarns. In one embodiment the binder yarns are moved such that they extend in a direction that is not orthogonal to the warp yarns. 1. A method for producing a three dimensional woven fabric comprising the steps of:providing a plurality of layers of warp yarns under tension, each layer comprising a plurality of parallel spaced yarns and separating the layers of warp yarns so as to define a shed between each layer;selectively inserting simultaneously a plurality of parallel weft yarns a predetermined distance into the sheds between the warp yarns; a) selectively moving the group of binder yarns relative to the warp yarns between weft insertions, the group of binder yarns being moved between more than two positions relative to the warp yarns during weaving of the fabric; and/or', 'b) selectively moving the group of binder yarns through only some of the warp yarn layers between weft insertions., 'selectively positioning at least one group of binder yarns between parallel spaced yarns of the warp yarn layers; and'}2. A method according to claim 1 , wherein the group of binder yarns are moved in such a manner that they extend in the woven fabric progressively through multiple yarn layers claim 1 , occupying different positions relative to the warp yarn layers between each weft insertion.3. A method according to claim 1 , wherein the group of binder yarns are moved between successive weft insertions such that the binder yarns extend in a direction in the woven fabric that is not orthogonal to the ...

3D Woven Preforms with Channels

A three-dimensional (3D) woven preform with channels in the through thickness direction developed for applications such as forming light weight preforms with an increased thickness. 1. A three-dimensional (3D) woven preform comprising:a plurality of groups of warp yarns;a plurality of groups of weft yarns, the warp yarns woven with the weft yarns to form a mock leno structure having a plurality of layers of the 3D woven preform,wherein a first group of warp yarns in a particular layer includes a first set of at least one warp central yarn that binds weft yarns in the particular layer to weft yarns in a subsequent layer and at least two first warp edge yarns, one on each side of the first set of the at least one warp central yarn, andwherein a second group of warp yarns in the particular layer includes a second set of at least one warp central yarn that binds weft yarns in the particular layer to weft yarns in a preceding layer and at least two second warp edge yarns, one on each side of the second set of the at least one warp central yarn, such that through thickness channels are formed in the multilayer preform.2. The 3D woven preform of claim 1 ,wherein a first group of weft yarns in the particular layer includes a first set of at least one weft central yarn that binds warp yarns in the particular layer to warp yarns in the subsequent layer and at least two first weft edge yarns, one on each side of the first set of the at least one weft central yarn, andwherein a second group of weft yarns in the particular layer includes a second set of at least one weft central yarn that binds warp yarns in the particular layer to warp yarns in the preceding layer and at least two second weft edge yarns, one on each side of the second set of the at least one weft central yarn.3. The 3D woven preform of claim 2 ,wherein the first and second warp edge yarns are woven over the first set of at least one weft central yarn and under the second set of at least one weft central yarn in ...

3D Spacer Fabric and Unbroken Loop Pile Fabric Laminated Composite Material

The present invention relates to a laminated composite material and, more particularly, to a laminated composite material that can include, but is not limited to, an unbroken loop pile fabric (UBL fabric) layer laminated to at least one side/surface of a spacer fabric (3D knit fabric) layer. 1. A laminated composite material comprising:a first layer comprising a spacer fabric, wherein said first layer further comprises a first surface and a second surface; anda second layer comprising an unbroken loop pile fabric laminated to said first surface of said first layer.2. The laminated composite material of claim 1 , wherein said second layer is compatible to engage with a third layer of molded or woven hook fasteners.3. The laminated composite material of claim 1 , further comprising a third layer comprising an unbroken loop pile fabric claim 1 , wherein said third layer is laminated to said second surface of said first layer.4. The laminated composite material of claim 3 , wherein said second layer and said third layer are made from different unbroken loop pile fabrics.5. The laminated composite material of claim 3 , wherein at least one of said second layer or said third layer is compatible to engage with a fourth layer of molded or woven hook fasteners.6. The laminated composite material of claim 1 , wherein said second layer is laminated to said first surface of said first layer via an adhesive selected from the group consisting of web adhesive claim 1 , hot melt adhesive claim 1 , pressure sensitive adhesive claim 1 , an adhesive film claim 1 , water based adhesive claim 1 , solvent based adhesive claim 1 , and froth foam.7. The laminated composite material of claim 1 , wherein said second layer is laminated to said first surface of said first layer via flame lamination.8. The laminated composite material of claim 7 , wherein said flame lamination is selected from a group consisting of molten cellular structured foam and molten thin film.9. The laminated composite ...

WOVEN MULTI-LAYER FABRICS AND METHODS OF FABRICATING SAME

A multi-layer ballistic woven fabric, including an upper woven layer having upper warp yarns and upper weft yarns that are interwoven together to form the upper woven layer. The multi-layer ballistic woven fabric also includes a lower woven layer having lower warp yarns and lower weft yarns that are interwoven together, and a plurality of securing yarns, each securing yarn interwoven with at least some of the upper yarns and some of the lower yarns so as to secure the upper and lower woven layers together. At least one of the securing yarns is woven underneath a first lower weft yarn, then above a second upper weft yarn adjacent the first lower weft yarn, then underneath a third lower weft yarn adjacent the second upper weft yarn and then above a fourth upper weft yarn adjacent the third lower weft yarn. The multi-layer ballistic woven fabric is formed by interweaving the securing yarns with the warp yarns and weft yarns as the upper woven layer and lower woven layer are made. 1. A multi-layer ballistic woven fabric , comprising:a. an upper woven layer having upper warp yarns and upper weft yarns that are interwoven together to form the upper woven layer, the upper warp yarns and upper weft yarns being ballistic yarns;b. a lower woven layer having lower warp yarns and lower weft yarns that are interwoven together to form the lower woven layer, the lower warp yarns and lower weft yarns being ballistic yarns, wherein at least some of the upper yarns and lower yarns are offset from each other so as to overlap by between 10% and 95%; andc. a plurality of securing yarns, each securing yarn interwoven with at least some of the upper yarns and some of the lower yarns so as to secure the upper and lower woven layers together, the securing yarns being of significantly smaller denier than the warp yarns and weft yarns and having significantly lower tenacities and tensile moduli than the warp yarns and weft yarns;d. wherein the multi-layer ballistic woven fabric is formed by ...

MULTILAYER AND MULTIFUNCTIONAL WOVEN FABRICS AND METHODS OF MAKING THE SAME

A multilayer fabric includes at least a first woven fabric layer and a second woven fabric layer tacked to the first woven fabric layer. The first woven fabric layer provides a first functionality to the multilayer fabric, the second woven fabric layer provides a second functionality to the multilayer fabric, and the first functionality is different than the second functionality. A method for forming a multilayer fabric includes weaving a first fabric layer on a loom, the first fabric layer having a first functionality, weaving at least a second fabric layer on the loom, the second fabric layer having a second functionality different than the first functionality, and tacking the second fabric layer to the first fabric layer while the first fabric layer and the second fabric layer are on the loom. The multilayer fabric may include multiple fabric layers, such as from 2 to 8 fabric layers. 1. A multilayer fabric comprising at least a first woven fabric layer and a second woven fabric layer tacked to the first woven fabric layer , wherein:the first woven fabric layer provides a first functionality to the multilayer fabric;the second woven fabric layer provides a second functionality to the multilayer fabric; andthe first functionality is different than the second functionality.2. The multilayer fabric according to claim 1 , wherein the first functionality and the second functionality are selected from one or more of warming claim 1 , cooling claim 1 , all season claim 1 , flame resistance claim 1 , antibacterial claim 1 , odor control claim 1 , retro-reflectivity claim 1 , ultraviolet protection claim 1 , friction resistance claim 1 , wear resistance claim 1 , energy resistance claim 1 , water repellency claim 1 , water proofing claim 1 , wind resistance claim 1 , thermal conductivity claim 1 , electrical conductivity claim 1 , stretch claim 1 , non-stretch claim 1 , softness claim 1 , hand claim 1 , slub claim 1 , fabric smoothness claim 1 , yarn size claim 1 , ...

WOVEN PREFORM FOR PRODUCING A CIRCUMFERENTIAL OR TOROIDAL REINFORCEMENT HAVING AN OMEGA-SHAPED CROSS-SECTION

The disclosure relates to a method of manufacturing a preform including a core and a sole. The method includes contour weaving the preform on a lap roller having a groove or an outgrowth allowing shape weaving of the core and the sole of the preform. At least one portion of the core and at least one portion of the sole include weft yarns which cross each other on common warp yarns. 1. A method for manufacturing a preform comprising a core and a sole , the method comprising:contour weaving the preform on a lap roller having a groove or an outgrowth allowing shape weaving of the core and the sole of the preform,wherein at least one portion of said core and at least one portion of said sole comprise weft yarns which cross each other on common warp yarns.2. The manufacturing method according to claim 1 , further comprising tightening sides of said preform in order to reduce a width of the preform claim 1 , while increasing a winding diameter of said core and said sole.3. The manufacturing method according to claim 1 , further comprising cutting the sole at an output of a shuttle loom in order to form a central slot so that the sole is formed of two portions separated from each other.4. The manufacturing method according to claim 1 , further comprising:forming at least two additional lateral warp sheets unbound from weft yarns of the core of the preform;unpleating lateral portions of the core to a center of the preform so that the sole is formed of two portions separated from each other.5. The manufacturing method according to claim 1 , wherein the step of contour weaving includes:binding warp yarns of lateral portions of the sole to warp yarns of a central portion of the sole via weft yarns of the sole; andbinding the warp yarns of the lateral portions of the sole to the warp yarns of a central portion of the core via weft yarns of the core.6. The manufacturing method according to claim 1 , wherein the step of contour weaving includes:binding a warp sheet of lateral ...

Three-Dimensional Woven Preforms for Omega Stiffeners

Disclosed is a method of forming a 3D woven omega-shaped stiffener by flat weaving a plurality of layers of interwoven warp and weft fibers to form a flat woven fabric having a cap portion, a first and a second web portion, a first and second foot portion, and an inner wrap portion. The 3D woven fabric is woven so that least some of the weft fibers are continuous across a juncture between the web portion and the foot portions. The flat woven fabric is then formed into the omega shape. 1. A method of forming a 3D woven stiffener comprising:flat weaving a plurality of layers of interwoven warp and weft fibers;interweaving portions of some of the layers with other layers into a flat woven fabric having a cap portion, a first web portion and a second web portion, a first foot portion and second foot portion, and an inner wrap portion; andforming the flat woven fabric to form an omega-shaped stiffener having an inner space,wherein at least some of the weft fibers are continuous across a juncture between the web portions and the foot portions.2. The method of claim 1 , wherein the inner space of the stiffener is closed.3. The method of claim 2 , wherein interweaving of the portions of some of the layers with other layers includes causing the cap portion to have two cap areas folded against one another and the inner wrap portion to have two inner wrap areas folded against one another.4. The method of claim 3 , comprising unfolding the cap areas so that the two cap areas are substantially collinear and unfolding the two inner wrap areas so that the inner wrap areas are substantially collinear.5. The method of claim 4 , wherein the cap portion is thicker than the web portions and the web portions are thicker than the foot portions.6. The method of claim 4 , comprising impregnating the omega-shaped stiffener with a matrix material.7. The method of claim 2 , wherein interweaving of the portions of some of the layers with other layers includes causing the first web portion to ...

Fiber structure and fiber-reinforced composite

A fiber structure, used as a reinforcement base material of a fiber-reinforced composite and including a multi-layered fabric including a warp layer and a weft layer, includes a first portion, and a second portion continuous with the first portion along one direction where the one direction refers to a direction in which warp yarns or weft yarns are adjacent to each other in the warp layer or the weft layer respectively. The warp yarns forming the second portion are thicker than those forming the first portion, and/or the weft yarns forming the second portion are thicker than those forming the first portion. When a pitch between the yarns refers to a distance between main axes of the yarns adjacent to each other in the one direction, the pitch between the yarns in the second portion is smaller than that in the first portion.

FABRIC FOR USE IN COMPOSITE MATERIALS AND METHOD FOR PRODUCING SAID FABRIC AND A COMPOSITE MATERIAL BODY

A fabric () for use in composite materials having a reinforcing system () made of reinforcing warp threads () and reinforcing weft threads (), which are placed on top of one other in two different reinforcing layers (), (). A binding system () of binding warp threads () and binding weft threads () is formed from a binding yarn () with a lower yarn count than the reinforcing yarn (). The reinforcing system () is enclosed between the binding warp threads () on the one side and the binding weft threads () on the other side, and thus, held in place at binding points (). At each binding point (), a binding warp thread () is guided and held between a stationary warp thread () and a regular warp thread () of a warp thread pair () of binding warp threads (). Between two adjacent binding points of a warp thread pair (), the stationary warp thread () and the regular warp thread () have intersecting points (). 115-. (canceled)1610. A fabric () for use in composite materials , comprising{'b': 11', '13', '14', '13', '16', '14', '16', '13', '13', '17, 'a reinforcing system () of reinforcing warp threads () and reinforcing weft threads (), said the reinforcing warp threads () forming a first reinforcing layer (), said reinforcing weft threads () being placed on said first reinforcing layer () of said reinforcing warp threads () without binding with the reinforcing warp threads () for forming a second reinforcing layer ();'}{'b': 12', '20', '21', '11', '21', '20', '20', '25', '24', '21', '22', '25', '24, 'a binding system () of binding warp threads () and binding weft threads (), said reinforcing system () being located between the binding weft threads () and the binding warp threads (), pairs of said binding warp threads () each comprising a stationary warp thread () and a directly adjacent regular warp thread () which cross each other multiple times, and said binding weft threads () each running along binding points () between the stationary warp thread () and a regular warp () ...

FABRIC AND MANUFACTURING METHOD THEREOF

A fabric and a manufacturing method thereof are provided, where the fabric is adapted to a physiological signal detection device. The fabric includes a fabric base layer, a plurality of first yarns and a plurality of second yarns. The first yarns and the second yarns are respectively woven on the fabric base layer to present a fluffy state. The first yarns are electrically conductive. A height of each of the first yarns relative to the fabric base layer is greater than a height of each of the second yarns relative to the fabric base layer, such that the first yarns are electrically conductive between a user and the physiological signal detection device. According to the fabric and the manufacturing method thereof, the fabric is wrapped on the physiological signal detection device to provide a protection effect, which still maintains a smooth detection process of the physiological signal detection device. 1. A fabric , adapted to a physiological signal detection device , the fabric comprising:a fabric base layer; anda plurality of first yarns and a plurality of second yarns, respectively woven on the fabric base layer to present a fluffy state, wherein the first yarns are electrically conductive, and a height of each of the first yarns relative to the fabric base layer is greater than a height of each of the second yarns relative to the fabric base layer, such that the first yarns are electrically conductive between a user and the physiological signal detection device.2. The fabric as claimed in claim 1 , wherein the first yarns are subjected to a yarn steaming processing before being woven to the fabric base layer claim 1 , and the second yarns are not subjected to the yarn steaming processing before being woven to the fabric base layer.3. The fabric as claimed in claim 2 , wherein a temperature required by the yarn steaming processing is 130 degrees Celsius.4. The fabric as claimed in claim 1 , wherein the first yarns and the second yarns are knitted on the fabric ...

Deflecting Member for Making Fibrous Structures

A deflection member that includes a reinforcing member and a plurality of tiles fastened to the reinforcing member. 1. A deflection member , the deflection member comprising a reinforcing member and a plurality of tiles fastened to the reinforcing member by one or more fastening element.2. The deflection member of claim 1 , wherein each of the plurality of tiles has a single tessellating shape claim 1 , wherein the plurality of tiles are fastened to the reinforcing member to form a patterned framework in a tessellating pattern.3. The deflection member of claim 1 , wherein one or more of the plurality of tiles has a first shape claim 1 , and one or more of the plurality of tiles has a second shape claim 1 , and the plurality of tiles are fastened to the reinforcing member to form a patterned framework in a tessellating pattern.4. The deflection member of claim 1 , wherein the plurality of tiles are fastened to the reinforcing member to form a patterned framework of tiles claim 1 , wherein the patterned framework has less than about 3 mm of distance between adjacent tiles.5. The deflection member of claim 1 , wherein each of the plurality of tiles is additively manufactured.6. The deflection member of claim 1 , wherein at least one of the plurality of tiles comprises deflection conduits and protuberances.7. The deflection member of claim 1 , wherein a first tile of the plurality of tiles comprises a first deflection conduit claim 1 , and a second tile of the plurality of tiles comprises a second deflection conduit claim 1 , wherein the first deflection conduit and the second deflection conduit combine to form a combined deflection conduit when the first tile and the second tile are fastened to the reinforcing member adjacent to each other.8. A deflection member claim 1 , the deflection member comprising:a. a fluid pervious reinforcing member, the reinforcing member comprising woven filaments; and,b. a patterned framework comprising a plurality of tiles fastened to the ...

Deflecting Member for Making Fibrous Structures

A deflection member that includes a reinforcing member and a plurality of tiles fastened to the reinforcing member. 1. A deflection member , the deflection member comprising a reinforcing member and a plurality of tiles fastened to the reinforcing member through stitching with thread.2. The deflection member of claim 1 , wherein each of the plurality of tiles is additively manufactured.3. The deflection member of claim 1 , wherein the plurality of tiles comprise pre-formed thread openings.4. The deflection member of claim 1 , wherein the reinforcing member comprises woven filaments.5. The deflection member of claim 4 , wherein the woven filaments of the reinforcing member and the thread are made from the same type of material.6. The deflection member of claim 1 , wherein at least one of the plurality of tiles is stitched to the reinforcing member around a perimeter of the tile.7. The deflection member of claim 1 , wherein at least one of the plurality of tiles is stitched to at least another of the plurality of tiles to create a multi-tile grouping before the plurality of tiles in the multi-tile grouping are stitched to the reinforcing member.8. The deflection member of claim 1 , wherein each of the plurality of tiles has a single tessellating shape claim 1 , wherein the plurality of tiles are fastened to the reinforcing member to form a patterned framework in a tessellating pattern.9. The deflection member of claim 1 , wherein one or more of the plurality of tiles has a first shape claim 1 , and one or more of the plurality of tiles has a second shape claim 1 , and the plurality of tiles are fastened to the reinforcing member to form a patterned framework in a tessellating pattern.10. The deflection member of claim 1 , wherein the plurality of tiles are fastened to the reinforcing member to form a patterned framework of tiles claim 1 , wherein the patterned framework has no gap between adjacent tiles.11. The deflection member of claim 1 , wherein the plurality of ...

Deflecting Member for Making Fibrous Structures

A deflection member that includes a reinforcing member and a plurality of tiles fastened to the reinforcing member. 1. A deflection member , the deflection member comprising a reinforcing member and a plurality of tiles fastened to the reinforcing member with rivets.2. The deflection member of claim 1 , wherein each of the plurality of tiles is additively manufactured.3. The deflection member of claim 1 , wherein the rivets are additively manufactured onto a back side of the plurality of tiles.4. The deflection member of claim 3 , wherein the rivets are 3-D printed onto a back side of the plurality of tiles.5. The deflection member of claim 1 , wherein the rivets comprise metal claim 1 , ferrous materials claim 1 , metal-impregnated resins claim 1 , ferrous-impregnated resins claim 1 , plastics claim 1 , crosslinked polymers claim 1 , thermoplastics claim 1 , metal-impregnated thermoplastics claim 1 , ferrous-impregnated thermoplastics claim 1 , amorphous thermoplastics claim 1 , semi-crystalline thermoplastics claim 1 , crystalline thermoplastics claim 1 , thermosets claim 1 , photopolymers claim 1 , UV curable resins claim 1 , and combinations thereof.6. The deflection member of claim 1 , wherein the rivets comprise ferrous materials.7. The deflection member of claim 1 , wherein the rivets have a Z-direction height of between about 3 mils and about 100 mils.8. The deflection member of claim 1 , wherein at least one of the plurality of tiles is stitched to at least another of the plurality of tiles to create a multi-tile grouping before the plurality of tiles in the multi-tile grouping are riveted to the reinforcing member.9. The deflection member of claim 1 , wherein each of the plurality of tiles has a single tessellating shape claim 1 , wherein the plurality of tiles are fastened to the reinforcing member to form a patterned framework in a tessellating pattern.10. The deflection member of claim 1 , wherein the plurality of tiles are fastened to the reinforcing ...

Woven Preform, Composite, and Method of Making Thereof

A three dimensional woven preform, a fiber reinforced composite incorporating the preform, and methods of making thereof are disclosed. The woven preform includes one or more layers of a warp steered fabric. A portion of the warp steered fabric is compressed into a mold to form an upstanding leg. The preform includes the upstanding leg and a joggle in a body portion. The body portion and upstanding leg are integrally woven so there is continuous fiber across the preform. A portion of the warp steered fabric includes stretch broken carbon fibers in the warp direction, and another portion includes conventional carbon fibers. The warp steered fabric can be woven on a loom equipped with a differential take-up mechanism. The warp steered fabric can be a single or multilayer fabric. The preform or the composite can be a portion of an aircraft window frame. 1. A method of forming a three dimensional woven preform , the method comprising the steps of:weaving a warp steered fabric; andlaying one or more layers of said warp steered fabric to form a predetermined shape.2. The method of claim 1 , further comprising the step of compressing a portion of said warp steered fabric into a mold so as to form an upstanding leg.3. The method of claim 2 , further comprising the step of forming a joggle in a body portion of said preform.4. The method of claim 3 , wherein said body portion and upstanding leg are integrally woven so there is continuous fiber across the preform.5. The method of claim 4 , wherein said preform is a portion of a window frame.6. The method of claim 5 , wherein said preform is a portion of an aircraft window frame.7. The method of claim 1 , wherein a first portion of said warp steered fabric comprises stretch broken carbon fibers or discontinuous tows claim 1 , or any fiber type that can be stretch broken or cannot be stretch broken claim 1 , in the warp direction.8. The method of claim 7 , wherein a second portion of said warp steered fabric comprises ...

METHOD FOR MANUFACTURING HEATING SHEET AND APPARATUS FOR MANUFACTURING SAME

The present invention relates to a method for manufacturing a heating sheet, the method comprising the steps of: a) weaving a weft including a carbon-coated weft W and a normal weft W and a warp including a metal wire into a fabric; b) cutting the woven fabric and connecting a power supply line to an electrode lead part by using, as the electrode lead part, a portion where the metal wire is located at the end of the cut fabric; and c) shielding the entire sheet-type fabric including the fabric and the power supply line by coating the same with an outer sheath, wherein, in step a), the carbon-coated weft W and the normal weft W satisfy formula 1 below: 1. A method for manufacturing a heating sheet , comprising:{'b': 1', '2, 'a) weaving a weft including a carbon-coated weft W and a normal weft W and a warp including a metal wire into a fabric;'}b) cutting the woven fabric and connecting a power supply line to an electrode lead part, wherein a portion of an end of the cut fabric in which a metal wire is located is used as the electrode lead part; andc) coating the entire sheet-type fabric, which includes the fabric and the power supply line, with an outer sheath to shield the entire sheet-type fabric from the outside,{'b': 1', '2, 'claim-text': {'br': None, 'i': d', '/d, 'sub': 1', '2, '0.2≤≤0.8\u2003\u2003[Equation 1]'}, 'wherein, in step a), the carbon-coated weft W and the normal weft W satisfy the following Equation 1{'sub': 1', '2, 'b': 1', '2, 'wherein drepresents a denier of the carbon-coated weft W, and drepresents a denier of the normal weft W.'}21. The method of claim 1 , wherein the carbon-coated weft W is coated with a treatment solution comprising:(1) 5 to 30% by weight of one or more carbon components selected from carbon black, furnace black, graphene, carbon nanotubes, and a carbon precursor;(2) 40 to 70% by weight of one or more base resins selected from polyvinyl alcohol, polyurethane, polyethylene, an ethylene-vinyl acetate copolymer, polyvinyl ...

COMPOSITE SCAFFOLD FOR THE REPAIR, RECONSTRUCTION, AND REGENERATION OF SOFT TISSUES

The disclosed composite scaffold provides a highly porous and flexible structure that substantially maintains its three-dimensional shape under tension and provides mechanical reinforcement of the repair or reconstruction-first via scaffold mechanical properties, and subsequently, through newly regenerated functional tissue as the scaffold is resorbed. 1158.-. (canceled)159. A method of making a composite scaffold comprising:A) constructing a three-dimensional support structure defining an interior surface within the support structure by one of an additive manufacturing method or injection molding, andB) forming a microporous matrix within the interior surface.160. The method of wherein constructing a three-dimensional support structure is done by an additive manufacturing method.161. The method of wherein the additive manufacturing method comprises three dimensional printing of the support structure.162. The method of further comprising:C) modifying the three-dimensional support structure.163. The method of wherein the three-dimensional support structure comprises one or more polymers and wherein (C) comprises dimensionally or mechanically manipulating the support structure to align the one or more polymers in the support structure to improve any of a stiffness claim 162 , yield point claim 162 , or ultimate strength behavioral characteristics thereof.164. The method of wherein (B) comprises forming a microporous matrix by an additive manufacturing method.165. The method of wherein the additive manufacturing method comprises three dimensional printing of the microporous matrix.166. The method of wherein (A) comprises constructing the three-dimensional support structure by an additive manufacturing method and (C) comprises forming a microporous matrix by an additive manufacturing method.167. The method of wherein one of (A) and (C) comprises utilizing an additive manufacturing method comprising any of Injection Molding claim 166 , Micro Molding claim 166 , ...

METHOD FOR PREPARING CAPACITIVE STRESS SENSING INTELLIGENT FABRIC

A method for preparing a capacitive stress sensing intelligent fabric. Conductive yarn serves as an electrode of a capacitive sensor, and the conductive yarn is obtained by means of direct preparation, coating, doping, etc.; an insulating elastomer is coated on the conductive yarn as a dielectric material; and the conductive yarn, which has been subjected to insulation processing, is interlaced among common yarns by using interweaving and overlapping structures among fabric yarns. A fabric sensing array is formed by means of a common manufacturing technique, and the method can be widely applied to force monitoring, etc., for intelligent garments, intelligent homes, touch-control screens, electronic skin and three-dimensional fabric composite materials. 1. A method of manufacturing a capacitive stress sensing intelligent fabric , the method comprising:1) preparing conductive yarns from metal, carbon or conductive polymers by doping or coating;2) coating an insulation polymer elastomer with dielectric properties on the surface of the conductive yarn obtained in 1), to yield electrode yarns integrating a dielectric material and the conductive yarns; and3) weaving the electrode yarns obtained in 2) using traditional textile technology, to obtain a stress-sensing intelligent fabric.2. The method of claim 1 , wherein in 1) claim 1 , a conductive component of the conductive yarns is a metal claim 1 , carbon claim 1 , conductive polymer claim 1 , or a mixture thereof; the preparation method of the conductive yarns comprises direct preparation claim 1 , doping claim 1 , coating or in-situ polymerization claim 1 , or a combination thereof.3. The method of claim 1 , wherein in 1) claim 1 , a preparation method of the conductive yarns comprises direct preparation claim 1 , doping claim 1 , coating or in-situ polymerization claim 1 , or a combination thereof.4. The method of claim 1 , wherein in 2) claim 1 , the insulation polymer elastomer with dielectric properties is ...

FIBER TEXTURE FOR A CASING MADE OF COMPOSITE MATERIAL WITH IMPROVED SHEAR RESISTANCE

A fibrous texture in the form of a web includes a first portion extending in a longitudinal direction between a proximal part and an intermediate part. One or more layers of warp threads or strands present on the side of an inner face of the fibrous texture include threads or strands of glass fibers, the threads or strands of the other layers of warp threads or strands including threads or strands of carbon fibers. The fibrous texture further includes a second portion extending in the longitudinal direction between the intermediate part and a distal part of the fibrous texture. One or more of the plurality of layers of warp threads or strands present on the side of an outer face of the fibrous texture include threads or strands of glass fibers. The warp threads or strands are continuous over the entire length of the fibrous texture. 1. A fibrous texture in the form of a web extending in a longitudinal direction over a determined length between a proximal part and a distal part and in a lateral direction over a determined width between a first lateral edge and a second lateral edge , the fibrous texture having a three-dimensional or multilayer weave between a plurality of layers of warp threads or strands extending in the longitudinal direction and a plurality of layers of weft threads or strands extending in the lateral direction ,wherein the fibrous texture comprises a first portion present in the longitudinal direction between the proximal part and an intermediate part, one or more layers of warp threads or strands present on the side of an inner face of the fibrous texture at least partly comprising threads or strands of glass fibers, the threads or strands of the other layers of warp threads or strands comprising threads or strands of carbon fibers,and wherein the fibrous texture further comprises a second portion present in the longitudinal direction between the intermediate part and the distal part of said fibrous texture, one or more of the plurality of ...

Blade having platforms including inserts

A fiber preform for a turbine engine blade and a single-piece blade suitable for being made by means of such a preform, a bladed wheel, and a turbine engine including such a blade; the fiber preform obtained by three-dimensional weaving comprises a first longitudinal segment ( 41 ) suitable for forming a blade root, a second longitudinal segment ( 42 ) extending the first longitudinal segment ( 41 ) upwards and suitable for forming an airfoil portion, a first transverse segment ( 51 ) extending transversely from the junction between the first and second longitudinal segments ( 41, 42 ), and suitable for forming a first platform; the first transverse segment ( 51 ) includes at least one non-interlinked portion comprising a top strip ( 51 b ) and a bottom strip ( 51 a ), and at least one insert ( 61 ) is arranged between the top and bottom strips ( 51 b, 51 a ) of the non-interlinked portion of the first transverse segment ( 51 ).

FIBER STRUCTURE AND FIBER-REINFORCED COMPOSITE MATERIAL

A fiber structure includes a plurality of fiber layers stacked in a stacking direction and a plurality of binding yarns that bind the fiber layers together in the stacking direction. Each of the binding yarns is engaged with the first fiber bundles that configure two fiber layers located at opposite ends of the fiber structure in the stacking direction. Each first fiber bundle has an engagement portion as a section that is engaged with the binding yarn and a non-engagement portion as a section that is not engaged with the binding yarns. Regarding the engagement portion and the non-engagement portion, the dimension of the non-engagement portion in the stacking direction is greater than the dimension of the engagement portion in the stacking direction. 1. A fiber structure comprising:a plurality of fiber layers stacked in a stacking direction; anda plurality of binding yarns that bind the fiber layers together in the stacking direction, wherein two or more first fiber layers each configured by a plurality of first fiber bundles arranged in a first direction, and', 'a second fiber layer configured by a plurality of second fiber bundles arranged in a second direction perpendicular to the first direction,, 'the fiber layers include'}each of the binding yarns is engaged with two of the first fiber bundles that are located at opposite ends of the fiber structure in the stacking direction,those of the first fiber bundles configuring the two of the first fiber layers located at the opposite ends have engagement portions as sections that are engaged with the binding yarns and non-engagement portions as section that are not engaged with the binding yarns, andregarding any pair of an engagement portion and a non-engagement portion that are adjacent to each other in the first direction, the dimension of the non-engagement portion in the stacking direction is greater than the dimension of the engagement portion in the stacking direction.2. The fiber structure according to claim 1 ...

FIBER CONSTRUCT, FIBER-REINFORCED COMPOSITE MATERIAL, AND METHOD FOR MANUFACTURING THESE

A fiber construct comprises a binding thread that binds all first fiber layers and second fiber layers in a laminating direction in a first flat portion, The binding thread is in any one of a mode of extending straight in a bent portion and a second flat portion, a mode of binding the first fiber layers and the second fiber layers partially in the laminating direction in the bent portion and the second flat portion, and a mode of being absent in the bent portion and the second flat portion. In the bent portion and the second flat portion, a second yarn is in any one of a mode of engaging with only the first yarn of a specific one of the first fiber layers and a mode of binding the first fiber layers partially in the laminating direction. 1. A fiber construct comprising:first fiber layers including a first yarn; andsecond fiber layers including a second yarn that intersects the first yarn, whereinthe first fiber layers and the second fiber layers are laminated,an extending direction of a yarn main axis of the first yarn is referred to as a first direction and an extending direction of a yarn main axis of the second yarn is referred to as a second direction,the fiber construct has a plate shape such that at least a first flat portion, a bent portion, and a second flat portion are continuous with one another in the second direction,a direction in which the first fiber layers and the second fiber layers are laminated is referred to as a laminating direction,in the first flat portion, the first yarn extends straight in the first direction and the second yarn extends straight in the second direction,the fiber construct further comprises a binding thread that binds all the first fiber layers and the second fiber layers in the laminating direction in the first flat portion,the binding thread is configured to be in any one of a mode of extending straight in the bent portion and the second flat portion, a mode of binding the first fiber layers and the second fiber layers ...

COMPOSITE PROPELLER BLADE FOR AN AIRCRAFT

An aircraft propeller blade including a streamlined structure constituted by at least one piece of fiber reinforcement obtained by three-dimensionally weaving yarns and densified by a matrix, together with a spar including an enlarged portion extending outside the fiber reinforcement and forming the root of the blade, and a shaping portion present in a housing arranged inside the fiber reinforcement. The fiber reinforcement includes a non-interlinked zone forming the housing inside the fiber reinforcement. The non-interlinked zone opens out into the bottom portion and into the rear edge of the fiber reinforcement so as to form an opening for inserting the shaping portion of the spar into the housing of the fiber reinforcement. The opening present in the rear edge of the fiber reinforcement extends over a height that is less than the height of the housing. 1. An aircraft propeller blade comprising a streamlined structure with at least one piece of fiber reinforcement obtained by three-dimensionally weaving yarns and densified by a matrix , together with a spar including an enlarged portion extending outside the fiber reinforcement and forming the root of the blade , and a shaping portion present in a housing arranged inside the fiber reinforcement ,the fiber reinforcement including a non-interlinked zone forming said housing inside the fiber reinforcement, the non-interlinked zone opening out into the bottom portion and into the rear edge of the fiber reinforcement so as to form an opening for inserting the shaping portion of the spar into the housing of the fiber reinforcement,wherein the opening present in the rear edge of the fiber reinforcement extends over a height that is less than the height of the housing so as to leave in said rear edge a retaining portion that comes at least in part into contact with the shaping portion of the spar.2. The blade according to claim 1 , wherein the opening in the rear edge of the fiber reinforcement extends over a height lying ...

Tracer strand for weaving a composite material part reinforcement

A tracer strand for the weaving of a composite material part reinforcement, the tracer strand including one or more carbon yarns twisted with one or more yarns of a material having a color contrasting with the color of the carbon yarns, the yarns being twisted together according to a twist included between 10 turns per meter and 80 turns per meter.

FIBER BLANK WOVEN AS A SINGLE PIECE BY THREE-DIMENSIONAL WEAVING TO MAKE A CLOSED BOX-STRUCTURE PLATFORM OUT OF COMPOSITE MATERIAL FOR A TURBINE ENGINE FAN

A fiber blank woven as a single piece by three-dimensional weaving to make a closed box-structure platform out of composite material for a turbine engine fan. In each plane of the fiber blank, a set of warp yarns interlinks layers of weft yarns in first, second, and third portions of the fiber blank, while leaving a closed non-interlinked zone separating the first and second portions over a fraction of the dimension of the fiber blank in the warp direction between an upstream non-interlinking limit and a downstream non-interlinking limit, and while leaving at least one open non-interlinked zone separating the second and third portions over a fraction of the dimension of the fiber blank in the warp direction from a non-interlinking limit to a downstream edge of the fiber blank. A method of fabricating a preform for the closed box-structure platform can use such a fiber blank. 126-. (canceled)27. A fiber blank woven as a single piece by three-dimensional weaving for making a platform of closed box structure out of composite material for a turbine engine fan , the fiber blank having opposite surfaces and comprising:a first portion, a second portion, and a third portion, each comprising a plurality of layers of weft yarns and each forming a portion of the thickness of the fiber blank between its opposite surfaces, the weft yarns of the fiber blank being arranged in columns, each column having weft yarns in all three portions; a closed non-interlinked zone separating the first portion from the second portion over a fraction of the dimension of the fiber blank in the warp direction between an upstream non-interlinking limit and a downstream non-interlinking limit; and', 'at least one open non-interlinked zone separating the second portion from the third portion over a fraction of the dimension of the fiber blank in the warp direction from a non-interlinking limit to a downstream edge of the fiber blank;, 'in each plane of the fiber blank, a set of warp yarns interlinking ...

Curved Preform and Method of Making Thereof

Disclosed is an apparatus and method for forming three-dimensional woven preforms that can be curved and have continuous fibers in the direction of curvature. Also disclosed are woven preforms formed thereby. 1. A curved woven preform comprising:a plurality of weft fibers;a plurality of warp fibers interwoven with the plurality of weft fibers to form a base of the preform;wherein the base of the preform is curved with the warp fibers continuous across the length of the preform and some of the warp fibers are longer than other warp fibers.2. The curved woven preform of claim 1 , wherein curvature of the woven preform is convex claim 1 , the length of the warp fibers being greater towards an outside of the curve of the preform than towards an inside of the curve of the preform.3. The curved woven preform of claim 1 , comprising:at least one leg integrally woven with the base and curved along a length of the base,wherein warp fibers forming the at least one leg are greater towards an outside curve of the at least one leg than towards an inside curve of the at least one leg.4. The curved woven preform of claim 1 , wherein curvature of the woven preform is concave claim 1 , the length of the warp fibers being shorter towards an outside of the curve of the preform than towards an inside of the curve of the preform.5. The curved woven preform of claim 1 , comprising:at least one leg integrally woven with the base and curved along a length of the base,wherein warp fibers forming the at least one leg are shorter towards an outside curve of the at least one leg than towards an inside curve of the at least one leg.6. A clamp comprising:an upper clamp; anda lower clamp mateable with the upper clamp,wherein the upper clamp has a complementary shape to mate with the lower clamp and configured to receive a fabric therebetween.7. A shaping clamp system comprising:two or more clamps, each clamp having an upper clamp portion and a lower clamp portion and an integral connecting ...

METHOD FOR MANUFACTURING A TURF REINFORCEMENT MAT

A turf reinforcement fabric and a method for producing such a fabric by weaving a plurality of filaments in a predetermined pattern to form a three-dimensional structure formed to have a loft thickness without requiring the application of heat to heat shrink the fibers, and/or formed with one or more fibers of increased thickness at peaks and valleys of the woven structure, and/or incorporating flame retardant and/or UV stabilizing fiber additives. 1. A three-dimensional turf-reinforcement fabric comprising a woven array of fibers comprising a first plurality of warp fibers arranged in a first direction and a second plurality of weft fibers arranged in a second direction generally perpendicular to the first direction , the woven array of fibers defining rows and columns of cells , wherein each cell comprises fiber segments of the first plurality of fibers and the second plurality of fibers being spaced at differing heights in a third direction perpendicular to the first and second directions , wherein at least a portion of the second plurality of weft fibers comprise fibrillated slit film polypropylene having a 2.5Z twist , and wherein a loft is formed in the three-dimensional turf-reinforcement fabric without requiring the application of heat.2. The three-dimensional turf-reinforcement fabric of claim 1 , wherein the woven array of fibers comprises a tubular or honeycomb pattern.3. The three-dimensional turf-reinforcement fabric of claim 1 , wherein the first plurality of warp fibers are selected from polypropylene claim 1 , polyethylene claim 1 , nylon claim 1 , polyester claim 1 , PVC claim 1 , fibrillated slit film polypropylene having a 2.5Z twist claim 1 , elastomeric fibers claim 1 , other natural or synthetic fibers claim 1 , and combinations thereof.4. The three-dimensional turf-reinforcement fabric of claim 1 , wherein the loft of the fabric is produced by control of at least one of the following parameters: loom tension setting claim 1 , ends per inch of ...

GREEN ECO MAT (GECOMAT) AND METHOD OF AEROPONICS AND HYDROPONICS USING THE SAME

A green ECO mat (GECOMAT) for aeroponics and hydroponics comprises at least one fabric green ECO mat of cultivation being woven to have arrayed multiple 3D-coniform-shaped (alike pyramid shape) chambers, and at least one floating member connects to the fabric green ECO mat. The chambers of the mat are positioned seed, and the floating member floats the mat in a space full with fluid in the nature to collect moisture in the fluid to provide for germination of the seed and growth of the plant. The harvesting means moves back the floating member and the mat when growth of the plant is completed. 1. A green ECO mat (GECOMAT) for aeroponics and hydroponics comprising:at least one fabric green ECO mat of cultivation being woven to have arrayed multiple 3D-coniform-shaped (alike pyramid shape) chambers by multiple longitudinal fibers and transversal fibers.2. A system for aeroponics and hydroponics comprising:at least one fabric green ECO mat of cultivation being woven to have arrayed multiple 3D-coniform-shaped (alike pyramid shape) chambers by multiple longitudinal fibers and transversal fibers;at least one floating member being connected with the at least one fabric green ECO mat of cultivation;wherein when the 3D-coniform-shaped (alike pyramid shape) chamber being positioned at least one seed of plant, and the at least one floating member naturally floating in a space full with fluid in the nature by the floating power of the fluid so that the at least one fabric green ECO mat of cultivation also floating in the space, the at least one fabric green ECO mat of cultivation collecting moisture in the fluid to provide for germination of the seed and growth of the plant, anda harvesting means for moving the at least one floating member and the at least one fabric green ECO mat of cultivation, wherein when growth of the plant being completed, the harvesting means being controlled to move the at least one floating member and the at least one fabric green ECO mat of ...

THREAD BIDIRECTIONAL INTERLOCKING OF ELECTRODE LEAD

The present invention provides interlocked thread electrode leads, methods of fabrication thereof, and thread interlocking machines. 1. A medical thread structure , comprising:a. a proximal end and a distal end, with a progression axis from the proximal end to the distal end; andb. a plurality of threads aligned vertically, in parallel to the progression axis, at said proximal end, structured to each have horizontal portions, perpendicular to the progression axis, and vertical portions, parallel to the progression axis, such that a horizontal portion of one thread is configured to pass between vertical portions of other threads, thereby interlocking therewith, 'and wherein at least one of said plurality of threads comprises electrically conductive portions coated with an electrically isolative layer, and electrically conductive portions exposed at predetermined locations for achieving a contact thereat.', 'wherein a horizontal portion of one or more threads passing between vertical portions of other threads is a beat, and each beat determines a vertical distance along the progression axis between said proximal end and said distal end;'}2. The medical thread structure of claim 1 , wherein a vertical portion of a thread is a warp portion claim 1 , and a horizontal portion of a thread is a weft portion claim 1 , and at least some of the threads are configured to be warps at certain locations claim 1 , and wefts at other locations.3. The medical thread structure of claim 1 , wherein when threads pass from being warp to being weft they form a directional contact; during weft portions of threads the one weft beat can: (i) form a full circle claim 1 , i.e. wrap around the entire fabricated interlocked lead or lead core; or (ii) does not form a full circle claim 1 , i.e. does not wrap around the entire fabricated interlocked lead or lead core claim 1 , but rather wrap only a portion of the warp(s) at a specific area of the fabricated electrode claim 1 , and optionally ...

DOCKING DEVICE MADE WITH 3D WOVEN FABRIC

A docking device for a bioprosthesis is disclosed that can change shape and recover after a deforming stress is removed, that adjusts to surrounding conditions to accommodate different complex anatomic geometries, and that mitigates leakage around the bioprosthesis. The docking device can include a 3D woven fabric forming an internal surface, an outer surface, and a thickness therebetween. A filler can be coupled to the outer surface. A method for making a docking device is also provided. The method includes weaving a 3D woven fabric by interlacing a shape memory material, a low-melt thermoplastic polymer or resin having a melting point, and a high-tenacity biocompatible material; and pressing and heating the 3D woven fabric over a shape-setting mold at temperatures greater than the melting point of the low-melt thermoplastic polymer or resin. 1. A docking device for a prosthesis , the docking device comprising:a three-dimensional (3D) woven fabric forming a shaped element having an internal surface, an outer surface, and a thickness there between; anda filler structure coupled to the outer surface of the shaped element.2. The docking device of claim 1 , wherein the prosthesis is a heart valve.3. The docking device of claim 1 , wherein the 3D woven fabric comprises first claim 1 , second claim 1 , and third different types of fibers or yarns.4. The docking device of claim 3 , wherein:the first type of fiber or yarn comprises a shape memory material;the second type of fiber or yarn comprises a low-melt thermoplastic polymer or resin; andthe third type of fiber or yarn comprises a high-tenacity biocompatible material.5. The docking device of claim 4 , wherein the shape memory material comprises Nitinol.6. The docking device of wherein the low-melt thermoplastic polymer or resin has a melting point between 85 degrees Celsius and 200 degrees Celsius.7. The docking device of claim 6 , wherein the low-melt thermoplastic polymer or resin comprises Nylon.8. The docking ...

BAFFLE CONSTRUCTS FOR INSULATIVE FILL MATERIALS

The inventive subject matter generally relates to shaped battle constructs for use in consumer products, such as garments and sleeping bags. In certain aspects, the shaped baffles are arranged in a multi-level construction of baffles wherein the baffles are offset in two or more levels. In certain aspects, the entire construct is a unitary woven, seamless construction. 1. A baffle construct , comprising:a drapable, pliable multilayer construction of a first layer, one or more interlayers, and a third layer, the interlayer being disposed between the first and third layers, the layers all being part of a unitary, seamlessly woven fabric construct, the layers being joined so as to define a plurality of baffles, andwherein the baffles are expandable from a first collapsed configuration to a second expanded configuration, the theoretical longitudinal cross-sectional profile of the baffles in the expanded configuration being an oval-like, elliptical-like, or a quadrilateral-like form.2. The baffle construct of wherein the baffle construct has a flat form when in the first collapsed configuration claim 44 , with the first layer being adjacent one side of the interlayer and the third layer being adjacent to an opposite side of the interlayer the layers being disconnected from one another except at spaced apart joints at (i) top side of the interlayer where the first layer merges therewith and (ii) at the bottom side of the interlayer where the third layer merges therewith.3. The baffle construct of wherein the length/height aspect ratio of the baffle is at least 1 claim 44 , the length being the separation between joints along the X-axis claim 44 , and the height being the maximum separation of the adjacent layers along the Y-axis.4. The baffle construct of wherein the height/length aspect ratio of the baffle is at least 1 claim 44 , the length being the separation between joints along the X-axis claim 44 , and the height being the maximum separation of the adjacent layers ...

PREFORM FOR A CURVED COMPOSITE STIFFENER FOR AN AXISYMMETRIC PART SUCH AS A COLLAR

The present disclosure concerns a preform for a curved composite stiffener for an axisymmetric part such as a shroud, including at least one web and at least one flange curved about an axis of revolution of the preform and defining a substantially “T” or an “I” shaped section. In one form, the preform includes a web and a flange, wherein the web includes a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns oriented radially relative to said axis, and the flange includes a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns substantially parallel to said axis. 1. A preform for a curved composite stiffener for an axisymmetric part comprising at least one web and at least one flange curved about an axis of revolution of said preform and defining at least one of a “T” and an “I” shaped section , whereinthe at least one web comprises a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns oriented radially relative to said axis of revolution; andthe at least one flange comprises a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns parallel to said axis of revolution.2. The preform according to claim 1 , wherein the web comprises a binding zone of warp yarn layers claim 1 , and the at least one flange comprises at least one unbinding zone of warp yarn layers.3. The preform according to claim 1 , wherein the plurality of warp yarns of the at least one flange of the preform have identical lengths claim 1 , and the plurality of warp yarns of the web of the preform have varied lengths.4. A curved composite stiffener for an axisymmetric part comprising at least one preform according to .5. An axisymmetric part reinforced by at least one stiffener according to .6. ...

Low-thickness thermostructural composite material part, and manufacture method

A thermostructural composite material part including carbon or ceramic fiber reinforcement densified by a matrix having at least one thin portion in which: the thickness of the part is less than 2 mm, or indeed less than 1 mm; the fiber reinforcement is made as a single thickness of multilayer fabric made of spread yarns having a weight of not less than 200 tex; the fiber volume ratio lies in the range 25% to 45%; and the ratio between the number of layers of the multilayer fabric and the thickness in millimeters of the part is not less than four.

Preform with Integrated Gap Fillers

A three-dimensional gap-filled preform and a method of forming a three-dimensional gap-filled preform. The preforms comprise a base section of all integrally woven layers, a portion of that base separated into three sections, the outer two sections comprising integrally woven layers, and the middle section comprising an integrated gap filler. The integrated gap filler may comprise a center section of one woven layer, independently woven layers, integrally woven layers, or a plurality of layers of warp fibers that are not interwoven with weft fibers. The layers of the integrated gap filler compress or crumple up in the middle section and fill the formed gap or gaps, while the woven layers of the outer sections are folded to form the shape of the preform. 1. A three-dimensional (3D) woven preform having a plurality of woven layers , the woven preform comprising:a base section of the preform comprising integrally woven layers;at least one end portion of the base section of the preform separated into at least three sections comprising:at least one middle section;at least two outer sections comprising integrally woven layers;wherein the at least two outer sections are folded to form a shape of the preform, and the at least one middle section is compressed or crumpled in a gap formed between the at least two outer sections.2. The preform of claim 1 , wherein the at least three sections are formed by cutting the at least one portion of the base.3. The preform of claim 1 , wherein the at least three sections are formed by weaving the at least one end portion of the base.4. The preform of claim 1 , wherein binder picks are used to weave the preform and are omitted at the sides of the at least one end portion of the base enabling a bifurcation to be formed when the separate arms of the preform are folded open.5. The preform of claim 1 , wherein the at least one middle section comprises one or more independently woven layers.6. The preform of claim 1 , wherein the at least one ...

A METHOD OF FABRICATING A PART OUT OF CERAMIC MATRIX COMPOSITE MATERIAL

A method of fabricating a composite material part including fiber reinforcement and a ceramic matrix present in the pores of the fiber reinforcement, the method including a) forming the fiber reinforcement by three-dimensionally weaving ceramic yarns, the fiber reinforcement as formed in this way presenting an interlock weave; b) forming a first ceramic matrix phase in the pores of the fiber reinforcement; c) after performing step b), introducing into the pores of the fiber reinforcement a powder that includes a mixture of SiC particles and of carbon particles; and d) infiltrating the fiber reinforcement obtained after performing step c), with an infiltration composition in the molten state including at least silicon so as to form a second ceramic matrix phase in the pores of the fiber reinforcement, thereby obtaining the composite material part. 1. A method of fabricating a composite material part comprising fiber reinforcement and a ceramic matrix present in pores of the fiber reinforcement , the method comprising:a) forming the fiber reinforcement by three-dimensionally weaving ceramic yarns, the fiber reinforcement as formed in this way presenting an interlock weave;b) forming a first ceramic matrix phase in the pores of the fiber reinforcement;c) after performing step b), introducing into the pores of the fiber reinforcement a powder that comprises a mixture of SiC particles and of carbon particles; andd) after performing step c), infiltrating the fiber reinforcement with an infiltration composition in the molten state comprising at least silicon so as to form a second ceramic matrix phase in the pores of the fiber reinforcement, thereby obtaining the composite material part.2. A method according to claim 1 , wherein the first ceramic matrix phase comprises silicon carbide.3. A method according to claim 1 , wherein a mean size of the particles introduced during step c) is less than or equal to 5 μm.4. A method according to claim 1 , wherein claim 1 , after ...

WOVEN FABRIC, A COMPOSITION OF THE WOVEN FABRIC AND A WEAVING METHOD THEREOF

A woven fabric, a composition of the fabric, and a method of forming the woven fabric. The woven fabric comprises from 50 to 89 ends per inch warp yarns and from 200 to 1200 yarns per inch polyester weft yarns. The woven fabric is made of polyester yarns having a denier of 10 to 60. The warp yarns are made of cotton yarn. The yarn count on the warp is within a range of 20-40 count (Ne). 1. A woven textile fabric , comprising:cotton warp yarns within a predefined range of 50 to 89 ends per inch in the warp; andmulti-filament polyester weft yarns within a predefined range of 200 to 1200 yarns per inch in the weft;wherein the multi-filament polyester weft yarns are wound on a single-strand or multi-strand yarn package at an angle of between 15 and 30 degrees to enable simultaneous insertion of the multi-filament polyester weft yarns during a single pick insertion event of the pick insertion apparatus of the loom apparatus,wherein at least one single-strand yarn package or at least one multi-strand yarn package or a combination thereof is configured for the weft insertion during the single pick insertion event of the pick insertion apparatus of the loom apparatus, andwherein the yarn count on the cotton warp is between 20-40 (Ne) count.2. The woven textile fabric of claim 1 , wherein the pick insertion apparatus of the loom apparatus is at least one of an air jet pick insertion apparatus or a rapier pick insertion apparatus.3. The woven textile fabric of claim 1 , wherein the multi-filament polyester yarns have a denier within a predefined range of 10 to 60.4. The woven textile fabric of claim 1 , wherein in each single pick insertion claim 1 , 2-24 threads are added in the weft of the woven fabric.5. The woven textile fabric of claim 1 , wherein the minimum and the maximum number of threads added per inch during the picking process per inch is 200 and 1200 respectively in the weft.6. The woven textile fabric of claim 1 , wherein a total thread count of the textile ...

METHOD AND MEANS FOR WEAVING, 3D FABRIC ITEMS THEREOF AND THEIR USE

An add-on weaving method, a device based on this method, 3D fabric items producible by this method and device, and composite materials reinforced with such 3D fabric items. The 3D fabric items are produced directly by the add-on weaving process using Complementary Fabric, warp yarns and weft yarns. The interacting woven fabric produced by interlacing the warp and weft yarns is simultaneously integrated with the Complementary Fabric used. The Complementary Fabric and interacting woven fabric integrate in mutual through-thickness directions at their intersecting planes and create directly 3D fabric items which are useful for manufacturing delamination resistant and high-performance composite materials. 1. A three-dimensional fabric item comprising at least one complementary fabric and at least one interacting woven fabric , wherein the complementary fabric is a pre-produced , in itself structurally stable , fabric , and wherein the interacting woven fabric comprises interlaced warps and wefts , wherein at least some of the warps and/or wefts of the interacting woven fabric penetrate through the complementary fabric in the thickness direction , whereby the complementary fabric and interacting woven fabric are connected to each other at their intersecting junction forming a three-dimensional fabric item.2. The three-dimensional fabric item of claim 1 , wherein said item is in the form of a profiled cross-section beam wherein its constituent complementary fabric is either its web or flange and its constituent interacting woven fabric is correspondingly either its flange or web.3. The three-dimensional fabric item of claim 1 , wherein said item is in a form other than that of a profiled cross-section beam claim 1 , wherein its constituent complementary fabric is one of the members or sections or components or parts claim 1 , and its constituent interacting woven fabric is the other member or section or component or part of the three-dimensional fabric object.4. The three- ...

KNITTED STRUCTURES FOR HEAT GENERATION AND DISTRIBUTION

A knitted structure is configured for heat generation and distribution. In some embodiments, the knitted structure includes a knitted fabric including a first knitted layer and a second knitted layer opposite the first knitted layer. The first knitted layer has a first thermal conductivity. The second knitted layer has a second thermal conductivity. The second thermal conductivity is greater than the first thermal conductivity to faciliate heat transfer toward the first knitted layer. The knitted structure may further include a plurality of electrodes at least partially disposed inside the knitted fabric. Each of the plurality of electrodes is configured to generate heat within the knitted fabric upon receipt of electrical energy in order to distribute heat along the knitted structure and toward the first knitted layer. 1. A knitted structure for heat generation and distribution , comprising:a knitted fabric including a first knitted layer and a second knitted layer opposite the first knitted layer, wherein the first knitted layer has a first thermal conductivity, the second knitted layer has a second thermal conductivity, and the second thermal conductivity is greater than the first thermal conductivity to faciliate heat transfer toward the first knitted layer; anda plurality of electrodes at least partially disposed inside the knitted fabric, wherein each of the plurality of electrodes is configured to generate heat within the knitted fabric upon receipt of electrical energy in order to distribute heat along the knitted structure and toward the first knitted layer.2. The knitted structure of claim 1 , wherein the second knitted layer includes a plurality of heat-insulating yarns.3. The knitted structure of claim 1 , wherein the second knitted layer includes a plurality of infrared reflective yarns.4. The knitted structure of claim 1 , further comprising a middle knitted layer disposed between the first knitted layer and the second knitted layer claim 1 , wherein ...

Three-dimensional fabric composite structure and preparation method thereof

A three-dimensional fabric composite structure and a preparation method thereof are provided. The three-dimensional fabric composite structure includes a three-dimensional fabric layer, first and second adhesive layers, and first and second bonding layers. The three-dimensional fabric layer has a first surface and a second surface opposite to each other. The first and second adhesive layers are respectively disposed on the first and second surfaces. The first and second bonding layers are respectively disposed on the first and second adhesive layers. The materials of the first and second bonding layers include polyether thermoplastic polyurethane (TPU) or polyester thermoplastic polyurethane.

Smart composite textiles and methods of forming

A smart material includes a composite textile that includes a textile substrate and a material disposed via an additive manufacturing technique onto the textile substrate based on an additive manufacturing pattern. The composite textile includes a gradient in least one of mechanical property, material property, or structural property and/or exhibits a change in at least one mechanical property, material property, or structure in response to at least one external stimulus.

WOVEN FIBROUS STRUCTURE FOR FORMING A CASING PREFORM

A fibrous structure having the form of a band extending in a longitudinal direction (X) over a given length between a proximal part and a distal part and in a lateral direction (Y) over a given width between a first side edge and a second side edge, the fibrous structure having a three-dimensional or multilayer weave between a plurality of layers of warp yarns or strands extending longitudinally and a plurality of layers of weft yarns or strands extending laterally, wherein a first portion of the fibrous structure present between the proximal part and an intermediate part of the fibrous structure includes carbon fiber weft yarns or strands and wherein a second portion of the fibrous structure present between the intermediate part and the distal part includes glass fiber weft yarns or strands. 1. A fibrous structure having the form of a band extending in a longitudinal direction over a given length between a proximal part and a distal part and in a lateral direction over a given width between a first side edge and a second side edge , the fibrous structure having a three-dimensional or multilayer weave between a plurality of layers of warp yarns or strands extending longitudinally and a plurality of layers of weft yarns or strands extending laterally ,wherein a first rigid portion of the fibrous structure present between the proximal part and an intermediate part of the fibrous structure comprises carbon fiber weft yarns or strands and in that a second elastically deformable portion of the fibrous structure present between the intermediate part and the distal part comprises glass fiber weft yarns or strands.2. The fibrous structure as claimed in claim 1 , wherein the glass fiber weft yarns or strands in the second portion are present on the side of an outer face of the structure.3. The fibrous structure as claimed in claim 1 , wherein only a portion of the weft yarns or strands of the second portion are made of glass fibers claim 1 , the other weft yarns or strands ...

FABRICATING COMPOSITE CORE WITH WOVEN COMPOSITE FIBERS

In the present disclosure, a method may include forming a three-dimensional composite fiber pre-form by three-dimensionally weaving a plurality of composite fibers. The composite fiber pre-form includes a plurality of open cells formed adjacent to and interlocked with each other, and a composite fiber forms at least a portion of a first side of a first open cell and at least a portion of a second side of a second open cell. The first open cell and the second open cell are adjacent to and interlocked with each other. 1. A method comprising:forming a three-dimensional composite fiber pre-form by three-dimensionally weaving a plurality of composite fibers, the composite fiber pre-form comprising a plurality of open cells formed adjacent to and interlocked with each other, wherein a composite fiber forms at least a portion of a first side of a first open cell and at least a portion of a second side of a second open cell, the first open cell and the second open cell adjacent to and interlocked with each other.2. The method of claim 1 , wherein the plurality of composite fibers comprises a first set of fibers oriented in an XZ plane and a second set of fibers oriented in an XY plane claim 1 , wherein forming the composite fiber pre-form comprises three-dimensionally weaving the second set of fibers through the first set of fibers to form the plurality of open cells in the XZ plane.3. The method of claim 2 , wherein the first set of fibers and the second set of fibers are oriented at an angle to each other.4. The method of claim 3 , wherein the angle is substantially 90 degrees or substantially 45 degrees.5. The method of claim 2 , wherein forming the three-dimensional composite fiber pre-form by three-dimensionally weaving the plurality of composite fibers comprises claim 2 , at an intersection of two sides of the first open cell:weaving a first subset of the second set of fibers to form a second side of the first open cell; andweaving a second subset of the second set of ...

Fiber structure and a composite material part incorporating such a structure

A method of fabricating a fiber structure by multilayer three-dimensional weaving between a plurality of weft yarns and of warp yarns, the fiber structure having at least first and second portions that are adjacent in the warp direction, the first portion presenting, in a direction perpendicular to the warp and weft directions, a thickness greater than the thickness of the second portion, includes making the first portion using a step of three-dimensionally weaving warp and weft layers in which a fiber fabric is formed in the form of a Mock-Leno weave grid in a core of the first portion together with skins at a surface of the first portion, a weave of the skins being modified locally so as to deflect certain warp yarns from said skins and weave them with the fiber fabric in the form of the Mock-Leno weave grid.

Integral textile structure for 3-d cmc turbine airfoils

An integral textile structure for 3-D CMC turbine airfoils includes top and bottom walls made from an angle-interlock weave, each of the walls comprising warp and weft fiber tows. The top and bottom walls are merged on a first side parallel to the warp fiber tows into a single wall along a portion of their widths, with the weft fiber tows making up the single wall interlocked through the wall's thickness such that delamination of the wall is inhibited. The single wall suitably forms the trailing edge of an airfoil; the top and bottom walls are preferably joined along a second side opposite the first side and parallel to the radial fiber tows by a continuously curved section in which the weave structure remains continuous with the weave structure in the top and bottom walls, the continuously curved section being the leading edge of the airfoil.

PROCESS FOR SHAPING AND PROCESS FOR IMPREGNATING A FIBROUS PREFORM

A process for shaping a fibrous preform includes the insertion of each attachment tab of a fibrous texture into a corresponding aperture of an impregnation mandrel, the attachment by a removable retaining device of each tab inserted into each aperture against a surface of the impregnation mandrel, the winding under tension of the fibrous texture on the impregnation mandrel in order to obtain a fibrous preform. 1. A process for shaping a fibrous preform implementing an installation comprising a storage mandrel intended to store a fibrous texture in the form of a wound strip , an impregnation mandrel comprising an external surface and an internal surface opposite the external surface , a device for conveying the fibrous texture between the storage mandrel and the impregnation mandrel , inserted into at least one aperture extending between the external and internal surfaces of the impregnation mandrel , and at least one removable retaining device , the process comprising:{'sub': 'X', 'producing a fibrous texture having a strip shape extending in a longitudinal direction (D) over a predetermined length between a proximal part and a distal part and having a three-dimensional or multilayer woven structure between a plurality of layers of warp threads and a plurality of layers of weft threads, the proximal part of the fibrous texture comprising at least one attachment tab, each attachment tab having a thickness less than the thickness of the rest of the fibrous texture,'}inserting each attachment tab of the fibrous texture into an aperture corresponding to the impregnation mandrel, the fibrous texture being unwound from the storage mandrel and conveyed by the conveying device between the storage mandrel and the impregnation mandrel,attaching, by each removable retaining device, of each tab inserted into each aperture against a surface of the impregnation mandrel,winding under tension fibrous texture on the impregnation mandrel in order to obtain the fibrous preform.2. The ...

3D WOVEN FIBER STRUCTURE, A FIBER PREFORM OBTAINED FROM SUCH A FIBER STRUCTURE, AND A COMPOSITE MATERIAL PART INCLUDING SUCH A PREFORM

A fiber preform is formed by a fiber structure woven by three-dimensional weaving with a plurality of layers of warp yarns interlinked by weft yarns of a plurality of layers of weft yarns, the fiber preform having a first portion and a second portion that extend one another in the weft direction and that are at an angle to each other. In the fold zone and in each weft plane of the fiber structure, two weft yarns situated in a region adjacent to an outside face of the fiber structure situated on the inside of the corner present paths that cross, so that less curvature is imposed on these yarns. 117-. (canceled)18. A fiber structure woven by three-dimensional weaving with a plurality of layers of warp yarns interlinked by weft yarns of a plurality of layers of weft yarns , the fiber structure comprising:a first portion and a second portion situated extending each other in a weft direction and foldable relative to each other to form an angle at a fold zone, wherein,in the fold zone and in each weft plane of the fiber structure, two weft yarns situated in a region adjacent to an outside face of the fiber structure situated on the inside of the angle have paths that cross.19. A fiber structure according to claim 18 , wherein one of the two weft yarns is the yarn that claim 18 , in the first portion or in the second portion claim 18 , is closest to an outside face.20. A fiber structure according to claim 19 , wherein claim 19 , in the fold zone claim 19 , the yarns of the two layers of weft yarns closest to the outside face of the fiber structure have paths that cross.21. A fiber structure according to claim 19 , wherein claim 19 , in the fold zone claim 19 , the yarns of the first and third layers of weft yarns from the outside face of the fiber structure have paths that cross claim 19 , and likewise the yarns of the second and fourth layers of weft yarns.22. A fiber structure woven by three-dimensional weaving with a plurality of layers of well yarns interlinked by warp ...

PREFORM TAKE-UP IN A JACQUARD LOOM

Jacquard loom () for producing a woven preform () from a plurality of warp yarns and a plurality of weft yarns, said loom comprising a device () for taking up the preform when it is being produced, in order to move it along an axis (X) as it is being formed, which axis is substantially parallel to a production direction for the preform, characterised in that said loom also comprises means () for rotating the preform, substantially about said axis. 1. Jacquard loom for producing a woven preform from a plurality of warp yarns and a plurality of weft yarns , said loom comprising a device for taking up the preform when it is being produced , in order to move it along an axis as it is being formed , which axis is substantially parallel to a production direction for the preform , wherein the loom also comprises means for rotating the preform , substantially about said axis.2. Jacquard loom according to claim 1 , wherein said take-up device comprises means for securing one end of the preform or ends of warp yarns of the preform.3. Jacquard loom according to claim 1 , wherein the means for rotating the preform are means for rotating said take-up device.4. Jacquard loom according to claim 1 , wherein it comprises a system for controlling the movement and rotation relative to said axis of said device.5. Jacquard loom according to claim 1 , wherein it comprises means for supporting the preform during the production thereof claim 1 , said support means being designed to hold the preform while it is being rotated.6. Jacquard loom according to claim 5 , wherein said support means comprise wedges designed to be arranged on two opposite faces of the preform.7. Jacquard loom according to claim 6 , wherein said support means also comprise means for holding the wedges against said faces.8. Jacquard loom according to claim 6 , wherein the holding means comprise at least one actuator.9. Jacquard loom according to claim 5 , wherein said support means comprise conveyor belts designed to ...

FIBER STRUCTURE AND FIBER REINFORCED COMPOSITE MATERIAL

A fiber structure includes a first corner section, which is a boundary section between a first structural portion and a second structural portion, a second corner section, which is a boundary section between the first structural portion and a third structural portion, and a third corner section, which is a boundary section between the second structural portion and the third structural portion. A first yarn that extends continuously in the first structural portion and the second structural portion is bent at the first corner section. A second yarn that extends continuously in the first structural portion and the third structural portion is bent at the second corner section. At least one of the first yarn and the second yarn, which extend continuously in the second structural portion and third structural portion, is bent at the third corner section. 1. A fiber structure comprising:a first forming portion that forms a first structural portion;a plurality of second forming portions that are stacked together and form a second structural portion that crosses the first structural portion;a plurality of third forming portions that are stacked together and form a third structural portion that crosses the first structural portion and the second structural portion;a first corner section that is a boundary section between the first structural portion and the second structural portion;a second corner section that is a boundary section between the first structural portion and the third structural portion; anda third corner section that is a boundary section between the second structural portion and the third structural portion, whereinthe first forming portion, the second forming portions, and the third forming portions are each constituted by a multilayer woven fabric having a plurality of fiber layers that are stacked together and a binding yarn that binds the fiber layers together in a stacking direction,the fiber layers includes a fiber layer formed by a plurality of first ...

ADDITIVE MANUFACTURING-3D PRINTING OF THREE-DIMENSIONAL WOVEN STRUCTURES

An interwoven structure is provided. The interwoven structure includes a plurality of adjacent sets of lateral elements comprised of a substantially non-flexible material extruded from a 3-D printer; a plurality of adjacent sets of transverse elements comprised of a material extruded from a 3-D printer and a plurality of adjacent sets of vertical elements comprised of a material extruded from a 3-D printer. The lateral, transverse, and vertical sets of elements are substantially mutually perpendicular to one coupled at a plurality of intersection nodes. The lateral, transverse and vertical sets of elements form an isotopically interwoven 3-dimensional weavement. 1. An interwoven structure comprising:a plurality of adjacent sets of lateral elements comprised of a substantially non-flexible material extruded from a 3-D printer;a plurality of adjacent sets of transverse elements comprised of a material extruded from a 3-D printer;a plurality of adjacent sets of vertical elements comprised of a material extruded from a 3-D printer;said lateral, transverse, and vertical sets of elements coming together substantially mutually perpendicular to one another at a plurality of intersection nodes, to foiin an isotopically interwoven 3-dimensional weavement.2. The interwoven structure of wherein said interwoven structure includes four planar substructures claim 1 , each having four coplanar elements extending in a Y-direction claim 1 , four coplanar elements extending in an X-direction and four co-planar elements extending in a Z-direction.3. The interwoven structure of wherein said interwoven structure further includes sixteen substantially parallel elements extending in the Z-direction.4. The interwoven structure of wherein the Z-direction elements are substantially perpendicular to the X- and Y-direction elements.5. The interwoven structure of wherein said isotopically interwoven 3-dimensional weavement is a curvaceous weavement.6. The interwoven structure of wherein said ...

FIBER PREFORM OF PI-SHAPED SECTION, IN PARTICULAR FOR A FAN PLATFORM MADE OF COMPOSITE MATERIAL

A fiber preform of π-shaped section, the preform including a base with a first face and an opposite second face, legs extending from the second face, and a fiber structure woven as a single piece by three-dimensional weaving with a plurality of layers of warp or weft yarns linked interlinked by weft or warp yarns in a plurality of layers of weft or warp yarns. In each plane of the preform, the weft or warp yarns of a first group of weft or warp yarns extend continuously through the base between two opposite edges thereof, and weft or warp yarns of a second group of weft or warp yarns extend continuously from an end of one of the legs to an end of the other leg, passing via the base, with the yarns of the first group and the yarns of the second group presenting two mutual crossings. 19-. (canceled)10. A fiber preform of π-shaped section , the preform comprising:a base with a first face and an opposite second face;legs extending from the second face;a fiber structure woven as a single piece by three-dimensional weaving with a plurality of layers of warp yarns interlinked by weft yarns in a plurality of layers of weft yarns,wherein in each weft plane of the fiber preform, the weft yarns of a first group of weft yarns extend continuously through the base between two opposite edges thereof, and weft yarns of a second group of weft yarns extend continuously from an end of one of the legs to an end of the other leg, passing via the base, with the weft yarns of the first group and the weft yarns of the second group presenting two mutual crossings.11. A preform according to claim 10 , wherein every weft yarn of the second group of weft yarns passes in depth via the base.12. A preform according to claim 10 , wherein the crossings between the weft yarns of the first group and the weft yarns of the second group are situated close to the connections between the legs and the base.13. A preform according to claim 10 , wherein claim 10 , in each weft plane of the fiber preform ...

WNGINEERED MATERIALS AND METHODS OF FORMING

A method of forming a substrate includes mapping a three dimensional spatial distribution of at least one structural protein fiber of extracellular matrix of biological material of interest, designing a fiber assembly pattern based on an intrinsic pattern of the at least one structural protein fiber of the extracellular matrix of the biological material, and assembling fibers based on the fiber assembly pattern to form the substrate. 1. A method of forming a substrate comprising:mapping a three dimensional spatial distribution of at least one structural protein fiber and/or natural or synthetic analogs thereof of extracellular matrix of biological material of interest;designing a fiber assembly pattern based on an intrinsic pattern of the at least one structural protein fiber and/or natural or synthetic analogs thereof of the extracellular matrix of the biological material; andassembling fibers based on the fiber assembly pattern to form the substrate.2. The method of claim 1 , wherein the substrate is a biomedical material claim 1 , tissue implant claim 1 , or mechanically functional textile.3. The method of claim 1 , wherein the at least one structural protein fiber (and/or natural or synthetic analogs thereof) comprises collagen fibers and elastin fibers of the extracellular matrix of the biological material.4. The method of claim 3 , wherein the three dimensional spatial distribution of the collagen fibers and elastin fiber are mapped using second harmonic imaging microscopy imaging of the collagen fibers and two photon excitation imaging microscopy of the elastin fibers.5. The method of claim claim 1 , wherein the fiber assembly pattern comprises a weaving algorithm based on the intrinsic pattern.6. The method of claim 5 , wherein the assembled fibers are woven using the weaving algorithm to define the weave pattern and fiber orientation.7. The method of claim 1 , wherein the biological material comprises tissue of a plant or animal.8. The method of claim 7 , ...

PREFORM, FRAMEWORK PART, AND METHOD FOR PRODUCING SUCH A PREFORM

Said preform () defining two parts () and comprising: a first group (C) of layers of warp yarns, which is external in the first part, a second group (C) of layers of warp yarns immediately beneath said first group, and a first group (T) of layers of weft yarns which is external in the first part. Furthermore, the first group of layers of warp yarns is absent in the second part and the first group of layers of weft yarns () extends into the second part, the first group of layers of weft yarns being external in the second part. The yarns of the first weft group have a lower yarn count than the yarns of the second weft group; and/or the yarns of the first warp group have a lower yarn count than the yarns of the second warp group. 1. A preform in particular for a stiffener , with a three-dimensional fibrous structure having a thickness and being woven in a single piece by multilayer weaving of layers of warp yarns and layers of weft yarns distributed along the thickness , the preform defining at least one first portion and at least one second portion extending the first portion toward a thin edge of the preform , the preform comprising:a first group of successive layers of warp yarns, which includes at least one layer of warp yarns and which is external in the first portion,a second group of successive layers of warp yarns, which includes at least one layer of warp yarns and which is located immediately below the first group of layers of warp yarns, anda first group of successive layers of weft yarns, which includes at least one layer of weft yarns and which is connected according to a weave with the first group of layers of warp yarns, so as to be external in the first portion, while:the number of layers of warp yarns forming the second portion is smaller relative to the number of layers of warp yarns forming the first portion, due to the absence of the first group of layers of warp yarns in the second portion, such that the second portion has a smaller thickness ...

COMPOSITE PROPELLER VANE OR BLADE FOR AIRCRAFT INTEGRATING A CONFORMATION PART

A vane includes a fiber reinforcement having a three-dimensional weaving densified by a matrix, the fiber reinforcement including in a single woven part a root portion and an airfoil portion extending along a longitudinal direction between the root portion and a vane tip portion and along a transverse direction between a leading edge portion and a trailing edge portion. The airfoil portion includes first and second extrados and intrados faces. The fiber reinforcement includes a non-interlinking forming a housing inside the fiber reinforcement, a conformation part being present in the housing. The non-interlinking extends over a non-interlinked area inside the airfoil portion of the fiber reinforcement included between the root portion and the vane tip portion in the longitudinal direction and between the leading edge portion and the trailing edge portion in the transverse direction, the non-interlinking also opening outside the airfoil portion of the fiber reinforcement. 1. An aircraft propeller vane or blade comprising a fiber reinforcement having a three-dimensional weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns , the fiber reinforcement being densified by a matrix , the fiber reinforcement comprising in a single woven part a root portion and an airfoil portion extending along a longitudinal direction between the root portion and a vane tip portion and along a transverse direction between a leading edge portion and a trailing edge portion , the airfoil portion including first and second extrados and intrados faces , the fiber reinforcement including a non-interlinking forming a housing inside said fiber reinforcement , a conformation part being present in the housing , propeller vane or blade in which the non-interlinking extends over a non-interlinked area inside the airfoil portion of the fiber reinforcement comprised between the root portion and the vane tip portion in the longitudinal direction and between the ...

Heavy-duty chain

The invention relates to a heavy-duty chain containing chain-links comprising synthetic polymeric yarns, wherein when said chain is kept at least taut onto an essentially planar surface, each chain-link has an orthographic projection onto said planar surface, said projection having a foot print area (A), wherein the foot print areas denoted as A 1 and A 2 of every two adjacent links are in a relation 80% A 2 ≦A 1 ≦100% A 2 with A 1 being the smallest of said two areas and wherein the projection is done in such a way that the ratio of the foot print areas A 2 to A 1 is maximized.

FIBROUS STRUCTURE WITH GROUPING OF FLOATS

A fiber structure includes a blank portion formed as a single part by three-dimensional weaving between a first plurality of yarn layers and a second plurality of yarn layers, the blank portion corresponding to all or part of a fiber reinforcement preform for a part made of composite material. Outside the blank portion, the fiber structure includes one or more two-dimensional fabric layers, each two-dimensional fabric layer grouping together the yarns of a single layer belonging to at least the first plurality of yarn layers and situated outside the blank portion. 1. A fiber structure comprising a blank portion formed as a single part by three-dimensional weaving between a first plurality of yarn layers and a second plurality of yarn layers , said blank portion corresponding to all or part of a fiber reinforcement preform for a part made of composite material , wherein said fiber structure comprises one or more two-dimensional fabric layers , each two-dimensional fabric layer grouping together yarns of a single layer forming part at least of the first plurality of yarn layers after they have exited the blank portion , and wherein each two-dimensional fabric layer extends outside the blank portion in the direction of the yarns of the layer of the first plurality of yarn layers grouped together in said two-dimensional fabric layer.2. A fiber structure according to claim 1 , wherein the yarns of the first plurality of yarn layers correspond to warp yarns claim 1 , whereas the yarns of the second plurality of yarn layers correspond to weft yarns claim 1 , each two-dimensional fabric layer being adjacent to the blank portion.3. A fiber structure according to claim 2 , wherein claim 2 , within each two-dimensional fabric layer claim 2 , the yarns of a single layer of warp yarns are woven together with the yarns of a single layer of weft yarns.4. A structure according to claim 1 , wherein each two-dimensional fabric layer is situated at a determined distance from the blank ...

Monobloc preform and blade for turbo machine

A fiber preform for a turbine engine blade or vane obtained by single-piece three-dimensional weaving. The preform includes a first longitudinal segment suitable for forming a root; a second longitudinal segment extending the first longitudinal segment and suitable for forming an airfoil portion; and a first transverse segment extending transversely from the junction between the first and second longitudinal segments and suitable for forming a first platform.