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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 11224. Отображено 100.
19-05-2021 дата публикации

Цилиндрический настроечный образец для ультразвукового контроля цилиндрических деталей малого диаметра

Номер: RU0000204315U1
Автор: Олег Евгеньевич Барышников, Сергей Владимирович Шурупов
Принадлежит: Федеральное государственное унитарное предприятие "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФГУП "ЦАГИ")

Полезная модель относится к устройствам неразрушающего контроля структуры и дефектов металлических изделий и может быть использована при изготовлении образцов для настройки чувствительности ультразвуковых дефектоскопов при ультразвуковом контроле (УЗК) цилиндрических деталей (прутки, отливки, поковки) диаметром не более 40 мм.Настроечный образец выполнен с эталонными цилиндрическими отражателями диаметром 0,8…1,2 мм: для настройки чувствительности профилированных пьезоэлектрических преобразователей в продольном направлении (вдоль окружности цилиндра) - в виде 3-торцевых глухих горизонтальных цилиндрических отверстий длиной (0,5…0,7)D, расположенных в вертикальной плоскости симметрии образца параллельно образующей цилиндра с шагом по высоте образца D/3; для настройки чувствительности в поперечном направлении (вдоль образующей цилиндра) - в виде 3-хордовых сквозных горизонтальных цилиндрических отверстий, расположенных перпендикулярно продольной оси симметрии цилиндрической поверхности образца с шагом D/3 по высоте образца и шагом 0,2D по длине образца. Диаметр горизонтальных цилиндрических отверстий, используемых для настройки чувствительности, равный 0,8…1,2 мм, соответствует минимальному возможному акустическому сигналу от горизонтальных цилиндрических отверстий для распознавания его над уровнем собственных шумов для диапазона толщин проверяемого металла 0…40 мм, а эффективная площадь его отражающей поверхности равна 2,2 мм2. 1 з.п. ф-лы; 4 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 204 315 U1 (51) МПК G01N 29/11 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01N 29/11 (2021.01) (21)(22) Заявка: 2020135344, 28.10.2020 (24) Дата начала отсчета срока действия патента: 19.05.2021 Приоритет(ы): (22) Дата подачи заявки: 28.10.2020 (45) Опубликовано: 19.05.2021 Бюл. № 14 (56) Список документов, цитированных в отчете о поиске: RU 196339 U1, 26.02.2020. RU 91176 U1, 27.01.2010. WO 2019127457 A1, 04.07.2019. ...

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Номер записи: 1
12-01-2012 дата публикации

System method and device for leak detection and localization in a pipe network

Номер: US20120007743A1
Автор: David Solomon
Принадлежит: Aquarius Spectrum Ltd

The invention provides a system for leak detection of a fluid in a pipe network. The system includes flow meters, and vibration detectors adapted to be attached to a pipe at a location in the pipe network. A processor analyzes signals generated by the flow meters and vibration detectors to identify the presence of one or more leaks in the pipe network. The invention also provides a method for detecting and localizing leaks in a pipeline network, and a device comprising a flow meter integral with a vibration detector for use in the system of the invention.

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Номер записи: 2
26-01-2012 дата публикации

Applications for real-time mass ratio, mass flow and particle size measurement of particle laden flows

Номер: US20120017699A1
Автор: Alex Van Der Spek, Daniel L. Gysling, Douglas H. Loose
Принадлежит: Cidra Corporated Services LLC

Techniques are provided for monitoring particle laden flows in a pipe, that include receiving signalling containing information about a parameter related to a particle laden flow in a pipe, the parameter including either (a) a sound level propagating through the particle laden flow in the pipe, or (b) a static pressure due to an acceleration of the particle laden flow in the pipe; and determining a measurement of a particle size and either a mass flow rate, or a particle-to-air mass ratio, or both the mass flow rate and the particle-to-air mass ratio, associated with the particle laden flow, based at least partly on a change in the parameter.

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Номер записи: 3
26-01-2012 дата публикации

Nebulizer and method of operation of a nebulizer

Номер: US20120017894A1
Автор: Sebastien Cinquin
Принадлежит: SYSTEM ASSISTANCE MEDICAL

Nebulizer and method of operation of a nebulizer comprising a cupel capable of containing a liquid and a vibrating member ( 4 ) capable of emitting, under the effect of a control signal originating from a control circuit ( 10 ), an ultrasound beam making it possible to transform the liquid into mist, in which the vibrating member ( 4 ) is sensitive to the sound wave produced during the transformation of the liquid into mist and detection means ( 14 ) detect the presence and/or the absence and/or the value of a sound signal originating from the vibrating member, or of a signal corresponding to a sound signal originating from said vibrating member.

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Номер записи: 4
02-02-2012 дата публикации

Alignment tool for use with a wind turbine inspection system and methods of assembling same

Номер: US20120024068A1
Автор: Andre Jonathan Filiatrault, George Rowan Silliman, James Leo Gauthier, Richard John Bever
Принадлежит: Individual

An alignment tool for use in inspecting a ring gear of a gearbox. The ring gear includes an outer surface and a plurality of gear teeth extending radially inwardly from the outer surface. The alignment tool includes a support member that extends between a leading edge and a trailing edge. The support member is removably mountable to the ring gear outer surface such that the leading edge is oriented substantially parallel to a forward surface of the ring gear. A guide member extends outwardly from the support member. The guide member includes a guide edge that is oriented with respect to a centerline of a gear tooth.

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Номер записи: 5
24-05-2012 дата публикации

Quantitative acoustic emission non-destructive inspection for revealing, typifying and assessing fracture hazards

Номер: US20120125108A1
Автор: Boris Muravin, Gregory Muravin, Itzik Mizrahi, Ludmila Lezvinsky
Принадлежит: Margan Physical Diagnostics Ltd

Inspecting for fracture hazards by detecting a presence of at least one flaw development process in an equipment under inspection, the flaw development process being corrosion product nucleation and development, pitting, plastic deformation development, and/or micro-cracking. Detecting the presence of the flaw development process includes (a) determining at least one characteristic acoustic emission (AE) signature associated with a respective flaw development process, and (b) measuring an AE from each of a plurality of locations within the equipment. Presence of the respective flaw development process is identified only when the measured AE conforms to the characteristic AE signature within a predetermined tolerance. A fracture hazard is determined to exist only when (a) a quantity of the identified flaw development processes exceeds a first predetermined threshold and/or (b) a magnitude of at least one of the identified flaw development processes exceeds a second predetermined threshold.

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Номер записи: 6
11-10-2012 дата публикации

Acoustic wave (aw) sensing devices using live cells

Номер: US20120258444A1
Автор: Abiche H. Dewilde, Gang Wang, Hongwei Sun, Jianping Zhang, Joel M. Therrien, Kenneth A. Marx, Lian Dai, Malavika Vashist, Sai Liu, Susan J. Braunhut
Принадлежит: University of Massachusetts UMass

In one embodiment according to the invention, there is provided a method of sensing a response of a living cell or virus to a change in conditions. The method comprises applying an essentially constant external electromotive force that causes oscillation of an acoustic wave device at essentially constant amplitude and frequency under steady state conditions. The acoustic wave device has attached at least one living cell or virus. A combined oscillating system including the acoustic wave device and the living cell or virus exhibits a fundamental frequency and at least one harmonic frequency of the combined oscillating system. The living cell or virus is exposed to a change in an environmental condition while oscillating the combined oscillating system under the essentially constant external electromotive force, whereby a response of the living cell or virus to the change in environmental condition will be indicated by a change in at least one of frequency and amplitude of the oscillation of at least one harmonic frequency of the combined oscillating system.

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Номер записи: 7
15-11-2012 дата публикации

Unpowered wireless sensor systems and methods

Номер: US20120286935A1
Автор: Haiying Huang
Принадлежит: University of Texas System

Devices, methods, and systems for wireless transmission of data from unpowered sensor nodes are presented. An unpowered sensor node includes a sensor, a first antenna for receiving an interrogation signal from a remote source, an up-converting frequency mixer, and a second antenna for transmitting a modulated output signal. A remote sensor interrogation unit generates and transmits the interrogation signal; then receives and demodulates the modulated output signal from the sensor nodes. Any type of sensor that generates an oscillatory signal can operate without a local power source. For a sensor that generates a non-oscillatory signal, the sensor node includes a low-power signal conditioning unit to convert the signal to an oscillatory signal. The sensor node may include an energy harvester such as a photocell to power the signal conditioning unit. A low-cost network of unpowered sensor nodes may be interrogated by a single interrogation unit using a multiplexing scheme.

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Номер записи: 8
29-11-2012 дата публикации

Excitation device and method for downhole seismic testing using the same

Номер: US20120298440A1
Автор: Chang-Guk SUN
Принадлежит: Korea Institute of Geoscience and Mineral Resources KIGAM

An excitation device for downhole seismic testing, includes an excitation hammer, a holding arm connected at one end thereof to the excitation hammer to allow the excitation hammer to rotate about the other end thereof, a support post having the other end of the holding arm rotatably coupled to an upper end thereof to support the excitation hammer and the holding arm at a certain height, and an excitation source configured to allow the support post to stand upright on the upper side thereof and which generates a seismic wave when struck by the rotated excitation hammer. The support post is formed at a lower end thereof with a securing section detachably inserted into a groove for the support post formed on the upper side of the excitation source such that the support post, the holding arm, the excitation hammer and the excitation source can be separated from each other.

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Номер записи: 9
06-12-2012 дата публикации

Particle Analysis in an Acoustic Cytometer

Номер: US20120304749A1
Автор: Gregory Kaduchak, Michael D. Ward
Принадлежит: Los Alamos National Security LLC

The present invention is a method and apparatus for acoustically manipulating one or more particles.

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Номер записи: 10
06-12-2012 дата публикации

Estimation of presence of void in through silicon via (tsv) based on ultrasound scanning

Номер: US20120304773A1
Автор: Akihiro Horibe, Fumiaki Yamada
Принадлежит: International Business Machines Corp

A method and apparatus to detect a defect in a three-dimensional integrated structure by ultrasound scanning and to non-destructively detect the presence of a void that can occur in a process in a through silicon via (TSV) arranged in a board, such as a silicon wafer. To avoid measurement by ultrasound scanning over a board surface from being impeded by an object, such as a (solder) bump, scattering ultrasound, one or more TSVs belonging to a test element group (TEG) are selected from among a plurality of TSVs such that physical obstruction in the vicinity of the TEG.

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Номер записи: 11
18-04-2013 дата публикации

METHOD AND SYSTEM FOR DIAGNOSIS OF THE INTERNAL STATE OF A BATTERY THROUGH ACOUSTIC EMISSION

Номер: US20130091950A1
Автор: Bernard Julien
Принадлежит: IFP ENERGIES NOUVELLES

The invention relates to a method of estimating the internal state of a first electrochemical system for electric power storage, such as a battery, wherein at last one property relative to the internal state of the first electrochemical system is estimated from acoustic emission measurements. 115-. (canceled)16. A method of estimating an internal state of a first electrochemical system for electrical power storage wherein at least one property relative to the internal state of the first electrochemical system is estimated from acoustic emission measurements , comprising:measuring for different internal states of at least a second electrochemical system of identical type as the first electrochemical system an acoustic emission response from the second electrochemical system corresponding to each internal state;recording for each acoustic emission response a signal characteristic of the acoustic emission response from the second system;processing the recorded signals characteristic of the second system by grouping the signals into populations of signals having common parameters;determining an acoustic signature of an internal state of the second electromechanical system by calibrating a relationship between at least one of the parameters common to at least one acoustic signal population and an internal state of the second electromechanical system by an analysis of values of at least one common parameter of the acoustic signal populations obtained for each of the internal states;obtaining an acoustic emission response from the first electrochemical system to obtain at least one signal characteristic of the acoustic emission measurements from the first system; andestimating the internal state of the first electrochemical system from the relationship by detecting at least one parameter characteristic of an acoustic signature of an internal state in the signal characteristic of the acoustic emission response from the first system.17. A method as claimed in claim 16 , ...

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Номер записи: 12
25-04-2013 дата публикации

METHOD FOR ANALYZING VIBRATION PROPERTY OF MEMBER INCLUDING PIEZOELECTRIC ELEMENT

Номер: US20130098156A1
Автор: Ando Toshiki, TAKIKAWA Kenichi
Принадлежит: NHK SPRING CO., LTD.

A method for accurately and speedy analyzing vibration property of head suspension including a piezoelectric element that moves a head according to voltage application. The method comprises a displacement obtaining step obtaining displacement of each node point of the piezoelectric element by voltage application to the piezoelectric element, a reaction force obtaining step eliminating the voltage application and applying the obtained displacement to each node point, a reaction force applying step eliminating the applied displacement and applying obtained reaction force to each node point, and an analyzing step performing the frequency response analysis by using mode superposition method. 1. A method for analyzing vibration property of a member including a moving portion and a piezoelectric element that moves the moving portion according to voltage application , the method comprising:an obtaining step obtaining reaction force or displacement of each node point of the piezoelectric element by voltage application to the piezoelectric element;an applying step eliminating the voltage application and applying the obtained reaction force or the displacement to each node point of the piezoelectric element; andan analyzing step performing frequency response analysis by using mode superposition method according to the applied reaction force or the displacement.2. A method for analyzing vibration property of a member having a moving portion and a piezoelectric element that moves the moving portion according to voltage application , the method comprising:a first obtaining step obtaining one of reaction force and displacement of each node point of the piezoelectric element by voltage application to the piezoelectric element;a second obtaining step eliminating the voltage application and obtaining the other of the displacement and the reaction force of each node point of the piezoelectric element by applying the obtained one of the reaction force and the displacement;an applying ...

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Номер записи: 13
09-05-2013 дата публикации

Method for Detecting Damage to Bearing

Номер: US20130116936A1
Автор: YAMAMOTO Shinjiro
Принадлежит:

A bearing damage detection method, comprising: executing frequency analysis for a vibration waveform of the vibration at the bearing obtained through measurement by sensor; setting at least two frequency ranges each substantially equal to a range defined by a rotation frequency fr of the moving ring which do not overlap, based upon results of the frequency analysis; obtaining peak frequencies, each manifesting in one of the plurality of frequency ranges having been set; and determining that the bearing is to be damaged upon deciding that the difference between the peak frequencies and the k multiple of the rotation frequency fr having been compared with each other may be regarded to be matched. 1. A bearing damage detection method for detecting damage to a bearing , comprising an inner ring , an outer ring , rolling elements that roll in contact with the inner ring and the outer ring , and a cage that holds the rolling elements , the method comprising:measuring vibration of the bearing occurring while a moving ring, i.e., either the inner ring or the outer ring, rotates by a sensor;executing frequency analysis for a vibration waveform of the vibration at the bearing, obtained through the measuring by the sensor;setting at least two frequency ranges each substantially equal to a range defined by a rotation frequency fr of the moving ring, i.e., either the inner ring or the outer ring, which do not overlap, based upon results of the frequency analysis;obtaining peak frequencies, each manifesting in one of the plurality of frequency ranges having been set;comparing a difference between the peak frequencies having been determined with a k multiple (k is an integer equal to or greater than 1) of the rotation frequency fr;making a decision whether or not the difference between the peak frequencies and k multiple of the rotation frequency fr, having been compared with each other may be regarded to be matched; anddetermining that the bearing is to be damaged upon deciding ...

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Номер записи: 14
13-06-2013 дата публикации

Probing system for measurement of micro-scale objects

Номер: US20130145848A1
Автор: Chan-Seo Goo, Martin B.G. Jun
Принадлежит: UVic Industry Partnerships Inc

An apparatus for measuring dimensions of a micro-scale object includes a movable stylus, a probe and at least one acoustic emissions sensor. The movable stylus is positionable to contact an object to be measured. The probe is rotatably coupled to the stylus and has a distal end that circumscribes a circle when rotated. The acoustic emissions sensor is operatively coupled to the probe. The sensor is operative to detect acoustic emissions generated from contact between the distal end of the probe and the object, thereby allowing dimensions of the object to be determined.

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Номер записи: 15
27-06-2013 дата публикации

Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts

Номер: US20130166214A1
Автор: Federico Bellin
Принадлежит: Varel International Industries LP

An acoustic emissions testing device includes a test cutter including a first surface, an acoustic sensor, an indenter coupled to the first surface, and a load. The load is exerted on the indenter, which transfers the load to the first surface. The acoustic sensor is communicably coupled to the test cutter and detects one or more acoustic events occurring therein. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the test cutter is objectively determined and can be ranked comparatively to the toughness of other test cutters. The load is ramped up to a peak load, held for a period of time, and then ramped down. Cutters from the same cutter type as the test cutters have similar toughness.

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Номер записи: 16
04-07-2013 дата публикации

DEVICE FOR INSPECTING A MOVING METAL STRIP

Номер: US20130167644A1
Автор: Deschamps Olivier, Michaut Marc
Принадлежит: SIEMENS VAI METALS TECHNOLOGIES SAS

A device for inspecting a moving metal strip includes a first electromagnetic acoustic transducer having an ultrasonic wave emitter. The waves emitted from the emitter are emitted to be incident on a first edge of a surface of the strip, and the emitter is not in contact with the strip. A second electromagnetic acoustic transducer is provided and includes an ultrasonic wave receiver. The waves received emerging from an area of the strip surface toward the receiver, the receiver is not in contact with the strip. A processing unit is coupled to the second electromagnetic acoustic transducer to provide an inspection criterion using a signature of the ultrasonic waves measured. The area is located on the strip such that a wave path between the first edge of the strip and the area is aligned in a linear direction mainly transverse to the direction of movement of the strip. 111-. (canceled)12. A device for inspecting a moving metal strip , the device comprising:a first electromagnetic acoustic transducer (EMAT) having an ultrasonic wave emitter, ultrasonic waves being emitted from said ultrasonic wave emitter being incident on a first edge of a surface of the metal strip, said ultrasonic wave emitter not being in contact with the metal strip;a second EMAT having an ultrasonic wave receiver, the ultrasonic waves being received emerging from an area of a strip surface disposed toward said ultrasonic wave receiver, said ultrasonic wave receiver not being in contact with the metal strip;a processing unit coupled to said second EMAT and providing at least one inspection criterion using at least one signature of the ultrasonic waves measured at said second EMAT; andthe area of the strip surface disposed on the metal strip such that a wave path between the first edge of the metal strip and the area is aligned in a linear direction mainly transverse to a direction of a movement of the strip.13. The inspection device according to claim 12 , wherein as far as possible away from the ...

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Номер записи: 17
22-08-2013 дата публикации

METHOD AND APPARATUS FOR DETECTING CRACKS AND DELAMINATION IN COMPOSITE MATERIALS

Номер: US20130213137A1
Автор: Ostapenko Sergei
Принадлежит:

A method is disclosed for testing for delamination of a first composite component from a second composite component a composite material. The method comprises coupling a broad-band actuator to the composite material and connecting sweeping frequencies to the broad-band actuator for vibrating the composite material. An acoustic sensor is coupled to the composite material for measuring a resonant frequency curve of the vibrating composite material. The measured resonant frequency curve of the vibrating composite material is compared with a reference resonant frequency curve. A delaminated composite material produces a change in the measured resonant frequency curve relative to the reference resonant frequency curve. The method is suitable for detecting delamination in fuel cells as well as ceramic body armor. 1. A method for testing for delamination of a first composite component from a second composite component of a composite material , comprising the steps of:coupling a broad-band actuator to the composite material;connecting sweeping frequencies to the broad-band actuator for vibrating the composite material;coupling at least one acoustic sensor to the composite material for measuring a peak frequency, an amplitude and a bandwidth of a resonant frequency curve of the vibrating composite material;comparing the measured peak frequency, amplitude and bandwidth of the resonant frequency curve of the vibrating composite material with a peak frequency, amplitude and bandwidth of a reference resonant frequency curve; andindicating a delaminated composite material in the event the composite material produces a change in one of the measured peak frequency, amplitude and bandwidth of the resonant frequency curve relative to the frequency, amplitude and bandwidth of the reference resonant frequency curve.2. A method for testing for delamination as set forth in claim 1 , wherein the step of coupling at least one acoustic sensor to the composite material includes coupling at ...

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Номер записи: 18
26-09-2013 дата публикации

BLADE VIBRATION MEASURING APPARATUS

Номер: US20130247671A1
Автор: Hirano Toshio, Hirate Toshiaki, Matsuda Hisashi, Mizuno Sueyoshi, NAKAYAMA Kohichi, OSAKI Kenji, Saito Ikuo, Sakakida Hitoshi
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to the embodiment, there is provided a blade vibration measuring apparatus, having, a contactless displacement 5 sensor which outputs a displacement measurement signal as measuring a displacement of a turbine moving blade in a rotation axis direction, a blade top position identifying device which outputs a blade top position identification signal to identify a top position based on a distance between the contactless displacement sensor 10 and the top position of the turbine moving blade as receiving the displacement measurement signal output from the contactless displacement sensor, and a blade vibration calculating device which calculates vibration amplitude and a vibration frequency of the turbine moving blade based on temporal variation of the distance 15 between the contactless displacement sensor and the top position of the turbine moving blade as receiving the blade top position identification signal output from the blade top position identifying device. 1. A blade vibration measuring apparatus , comprising:a contactless displacement sensor which outputs a displacement measurement signal as measuring a displacement of a turbine moving blade in a rotation axis direction;a blade top position identifying device which outputs a blade top position identification signal to identify a top position based on a distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the displacement measurement signal output from the contactless displacement sensor; anda blade vibration calculating device which calculates vibration amplitude and a vibration frequency of the turbine moving blade based on temporal variation of the distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the blade top position identification signal output from the blade top position identifying device.2. The blade vibration measuring apparatus according to claim 1 ,wherein a ...

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Номер записи: 19
03-10-2013 дата публикации

DIFFERENTIAL ULTRASONIC WAVEGUIDE CURE MONITORING PROBE

Номер: US20130260469A1
Автор: DJORDJEVIC Borislav B., Rouch Lawrence L.
Принадлежит: Materials And Sensors Technologies, Inc.

The present invention is seen to provide a new methodology, testing system designs and concept to enable in situ real time monitoring of the cure process. Apparatus, system, and method for the non-destructive, in situ monitoring of the time dependent curing of advanced materials using one or more differential ultrasonic waveguide cure monitoring probes. A differential ultrasonic waveguide cure monitoring probe in direct contact with the material to be cured and providing in situ monitoring of the cure process to enable assessment of the degree of cure or cure level in a non-cure related signal variances (e.g., temperature) independent calibrated response manner. A differential ultrasonic waveguide cure monitoring probe including a transducer coupled to a waveguide and incorporating correction and calibration methodology to accurately and reproducibly monitor the cure process and enable assessment of cure level via ultrasonic reflection measurements. The amplitude of the corrected interface response signal reflected from the probe-resin interface indicating changes in the modulus of the material during the cure. 1. A differential ultrasonic waveguide cure monitoring probe for in situ ultrasonic monitoring of a material undergoing a cure process , the probe comprising:an ultrasonic transducer;a waveguide having a proximal end in contact with the ultrasonic transducer and a distal end for contacting the material undergoing the cure process, the waveguide comprising:a first portion extending from the proximal end;a reference of the waveguide;a second portion extending from the reference to a tip at the distal end of the waveguide;an ultrasonic signal generated by the ultrasonic transducer and transmitted into the waveguide;an interface signal generated by a portion of the ultrasonic signal reflecting back from the interface of the probe and the material undergoing a cure, the interface signal reflecting back to the ultrasonic transducer, the interface signal being used ...

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Номер записи: 20
17-10-2013 дата публикации

Resonance inspection-based surface defect system/method

Номер: US20130269435A1
Автор: Leanne Jauriqui
Принадлежит: Vibrant Corporation

A system and method for evaluating a part-under-test ( 120 ) is disclosed. The part-under-test ( 120 ) is excited using at least one drive frequency. A first surface acoustical wave (SAW) mode ( 206 ) is identified in the frequency response ( 200 ). A separate reference peak ( 204 ) for the identified SAW mode ( 206 ) is also identified in the frequency response ( 200 ). At least one degeneracy assessment zone ( 208 ) is evaluated for existence of a surface defect trigger condition. If a surface defect trigger condition exists, the part-under-test ( 120 ) may be rejected. Otherwise, the part-under-test ( 120 ) may be accepted.

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Номер записи: 21
17-10-2013 дата публикации

Flaw Detection Method and Apparatus for Fuel Cell Components

Номер: US20130269436A1
Автор: Stephen Couse, Tulin Akin
Принадлежит: Bloom Energy Corp

Various embodiments provide systems and methods for detecting defects in components of a fuel cell. Embodiment methods and systems include directing acoustic energy into the component, detecting acoustic energy from the component, analyzing a characteristic of the detected acoustic energy, and based on the analyzing, determining the presence or absence of a defect in the component.

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Номер записи: 22
17-10-2013 дата публикации

Ultrasonic method and system for determining tissue pathology

Номер: US20130269441A1
Автор: Leigh A. Neumayer, Timothy E. Doyle
Принадлежит: University of Utah Research Foundation UURF, Utah State University USU

A method for determining a pathology of a tissue sample. The method includes steps of coupling the tissue sample between two oppositely-facing ultrasonic transducers; acquiring a pulse-echo ultrasonic measurement and a through-transmission ultrasonic measurement of the tissue sample using the ultrasonic transducers; analyzing at least one of the pulse-echo ultrasonic measurement and the through-transducer transmission ultrasonic measurement using time domain analysis; analyzing at least one of the through-transmission ultrasonic measurements and the pulse-echo ultrasonic measurements using frequency domain analysis; and determining the pathology of the tissue sample based on at least one of the time domain analysis and the frequency domain analysis.

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Номер записи: 23
31-10-2013 дата публикации

REAL-TIME PAVEMENT PROFILE SENSING SYSTEM USING AIR-COUPLED SURFACE WAVE

Номер: US20130289896A1
Автор: Cao Yinghong, Wang Ming
Принадлежит: NORTHEASTERN UNIVERSITY

A non-contact testing system and method using acoustic sensors and a mobile sensing system using this system and method is disclosed. The leaky surface wave is recorded with directional microphones. A fast inversion analysis algorithm is introduced to estimate the shear velocity profile and elastic modulus for the subsurface layers of pavement structures, using the dispersion curves obtained from the acoustic signals. An electrical hammer is used to produce impact impulses automatically. A mobile sensing system is integrated on a mobile cart to perform the mobile subsurface sensing for pavement structures. 1. A method for characterizing at least one layer of pavement to a predetermined penetrating depth , comprising:providing a data processor for receiving audio input signals;disposing an array of microphones proximate an upper surface of the pavement, the array being in communication with the data processor for communicating audio input signals thereto;applying a substantially vertical point load impact to the pavement;detecting with a plurality of microphones in the array a leaky surface wave generated by the impact;defining, by the data processor, a dispersion curve from the leaky surface wave, the dispersion curve mapping phase velocity versus wavelength or frequency; and starting at the lowest wavelength or highest frequency corresponding to the pavement surface, and repeating for each consecutive higher wavelength or lower frequency corresponding to a substantially horizontal layer along the predetermined penetrating depth, dividing the respective phase velocity value by a predetermined estimate of the amplitude of particle vertical displacement for the substantially horizontal layer, while assuming all deeper layers are uniform half-space, to derive estimates of shear velocity at corresponding penetrating depths, and', 'iteratively adjusting the estimates of shear velocity by repeating, starting at the lowest wavelength or highest frequency and for each ...

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Номер записи: 24
14-11-2013 дата публикации

Process to Monitor Unwanted Formation of a Polymer having Internal Strain by Acoustic Emission Analysis

Номер: US20130298678A1
Автор: Alcuri Gustav, Thoret Bauchet Jean-Pierre
Принадлежит: TOTAL RESEARCH & TECHNOLOGY FELUY

A process to monitor unwanted formation of a polymer having internal mechanical strain is disclosed. The acoustic emission generated by polymer formation is detected by one or more acoustic sensors attached to a piece of equipment. 118-. (canceled)19. A process to monitor unwanted formation of a polymer having internal mechanical strain comprising:supplying equipment comprising an acoustic sensor, wherein the acoustic sensor is a resonant piezo-electric transducer comprising filtering means to select a frequency range and wherein the resonant piezo-electric transducer is in electric communication with a conditioner unit comprising a filtering means and an operational preamplifier; anddetecting acoustic emission generated by the polymer formation using the acoustic sensor,wherein said polymer is a popcorn polymer deriving from 1,3-butadiene, isoprene, dimethyl-2,3-buta-1,3-diene, chloroprene, bromoprene, styrene containing impurities, divinylbenzene, and styrene containing traces of divinylbenzene,20. The process according to wherein each acoustic sensor attached to the piece of equipment turns the acoustic emission to an electrical or digital signal.21. The process according to wherein the filtering means selects the frequency range characterizing formation of a specific polymer.22. The process according to wherein the the filtering means forms an output signal comprising damped oscillations.23. The process according to wherein said conditioner unit is connected to a unit in which there is at least one adjustable threshold level.24. The process according to wherein there is a plurality of cascaded threshold levels.25. The process according to wherein a pulse counter is connected to the conditioner unit whenever an oscillation is over a threshold level a pulse is counted.26. The process according to claim 25 , wherein the number of pulse for every threshold level is displayed and/or recorded.27. The process according to claim 25 , wherein the time during which an ...

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Номер записи: 25
14-11-2013 дата публикации

Method for Detecting Damage to a Hollow Shaft

Номер: US20130298684A1
Автор: Stephan Oskar
Принадлежит: BASF SE

A method for detecting damage to a hollow shaft having no radially encircling notches, openings, or channels by: 111. A method for detecting damage to a hollow shaft () , wherein the hollow shaft () has no radially encircling notches , opening , or channels , comprising:{'b': 19', '21', '1, '(a) positioning a sensor () for transmitting and receiving a signal at an end face () of the hollow shaft (),'}(b) transmitting a signal and receiving an echo of the signal,(c) determining a signal propagation time from the time of transmitting the signal until receiving the echo,(d) comparing the signal propagation time to a predetermined intended value and emitting a warning in the case of a deviation.21925272327211. The method according to claim 1 , wherein the sensor () is positioned in a region between the a radial distance of the an inner face () of the a casing () with respect to the axis and the a radial distance of the an outer face () of the casing () with respect to the axis on the end face () of the shaft ().319. The method according to claim 1 , wherein the sensor () is an ultrasound sensor.419. The method according to claim 3 , wherein the ultrasound sensor () has an operating frequency in the range between 0.1 and 1 MHz.51. The method according to claim 1 , wherein the hollow shaft () has a length in the range between 2 and 10 m.619211. The method according to claim 1 , wherein the sensor () is placed onto the end face () of the hollow shaft () using a coupling agent.71. The method according to claim 1 , wherein the hollow shaft () is made of a metallic material.821119. The method according to claim 1 , wherein the end face () of the hollow shaft () onto which the sensor () is placed is made of solid matter or welded.92127. The method according to claim 1 , wherein the end face () is integrally connected to a casing ().10211. The method according to claim 1 , wherein the end face () has an angle with respect to the shaft () claim 1 , which angle lies in the range ...

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Номер записи: 26
28-11-2013 дата публикации

Ultrasonic Spectroscopic Analysis-Based Inspection of Rail Components

Номер: US20130312524A1
Автор: Johnson William B., Mian Zahid F.
Принадлежит: INTERNATIONAL ELECTRONIC MACHINES CORPORATION

A solution for evaluating the condition of a rail component based on resonant response profiles across a set of bands of vibrations. The vibrations can be induced into the target component during normal operation of the target component. The resonant response profile of the rail component can vary depending on wear or damage, and thus can be used to determine whether the rail component can safely remain in use. An embodiment comprises an isolated segment of rail of a length selected to allow a single railroad wheel on it at a time, with a set of devices which can induce specific vibrations into the wheel as it passes, and another set of devices which can acquire the resonance signals from the wheel. 1. A method for resonant ultrasonic analysis-based inspection of a rail component , the method comprising:inducing a spectrum of frequencies into an in-situ rail component;detecting and recording resonances produced by the induced frequencies as resonance data;determining a set of characteristics of resonant peaks within a frequency band of interest of the resonance data;comparing the set of characteristics with an expected resonance profile; anddetermining a condition of the rail component based on the comparing.2. The method of claim 1 , wherein the rail component is a railroad wheel.3. The method of claim 2 , further comprising selecting the spectrum of frequencies based on modeling of a set of characteristics of the railroad wheel.4. The method of claim 2 , further comprising selecting the spectrum of frequencies based on tests on a set of exemplar railroad wheels.5. The method of claim 1 , wherein the expected resonance profile is a sound-based parametric model using invariant feature sets representing a particular rail component or a particular type of rail component.6. The method of claim 1 , wherein the expected resonance profile is based on a set of known rail components.7. The method of claim 1 , wherein the expected resonance profile is based on a set of prior ...

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Номер записи: 27
28-11-2013 дата публикации

BATTERY MANAGEMENT SYSTEM WITH DISTRIBUTED WIRELESS SENSORS

Номер: US20130314094A1
Автор: Bandhauer Todd M., Farmer Joseph C.
Принадлежит: Lawrence Livermore National Security, LLC

A system for monitoring parameters of an energy storage system having a multiplicity of individual energy storage cells. A radio frequency identification and sensor unit is connected to each of the individual energy storage cells. The radio frequency identification and sensor unit operates to sense the parameter of each individual energy storage cell and provides radio frequency transmission of the parameters of each individual energy storage cell. A management system monitors the radio frequency transmissions from the radio frequency identification and sensor units for monitoring the parameters of the energy storage system. 1. An apparatus for monitoring parameters of an energy storage system , wherein the energy storage system includes a multiplicity of individual energy storage cells , comprising:a radio frequency identification and sensor unit connected to each of the individual energy storage cells, said radio frequency identification and sensor unit operating to sense the parameter of each individual energy storage cell and provide radio frequency transmission of the parameters of each individual energy storage cell, anda management system that monitors said radio frequency transmissions from said radio frequency identification and sensor units for monitoring the parameters of the energy storage system.2. The apparatus for monitoring parameters of an energy storage system of claim 1 , wherein the energy storage system is a capacitor bank that includes a multiplicity of individual capacitor cells and wherein said radio frequency identification and sensor unit connected to each of the individual energy storage cells comprises a radio frequency identification and sensor unit connected to each of the individual capacitor cells.3. The apparatus for monitoring parameters of an energy storage system of claim 1 , wherein the energy storage system is a battery pack that includes a multiplicity of individual battery cells and wherein said radio frequency identification ...

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Номер записи: 28
12-12-2013 дата публикации

Campbell diagram displays and methods and systems for implementing same

Номер: US20130328901A1
Автор: Charles T. HATCH, John Wesley Grant
Принадлежит: Individual

Methods and systems for creating Campbell diagram displays for illustrating vibration characteristics of a moving apparatus, such as a rotary machine, are provided. Data, representing vibration amplitudes and frequencies are recorded against rotational speeds of an apparatus. The data is used to create waveforms representing the forward and/or reverse vibration frequencies of the apparatus. The waveforms in turn are used to create spectral line envelopes to provide enhanced two dimensional images indicating the amplitudes of the vibrations of the apparatus at particular rotational speeds. The spectral line envelopes may be empty, filled with one or more colors, or other illustration features to impart solidity to the envelopes to enhance visibility.

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Номер записи: 29
12-12-2013 дата публикации

Apparatus and method for determining the internal cleanliness of a tube

Номер: US20130332091A1
Автор: Noam Amir, Tal Pechter
Принадлежит: ACOUSTICEYE LTD

A system to measure the internal state of a bundle of tubes by injecting a signal into each tube of the bundle, receiving reflections from the tube due to anomalies within the tube, then analyzing the reflections to determine the type or characteristics about the anomalies. The analyzed information is stored in database to be used for statistical processing. Further, the device can be used in the performance of a cleaning process by conducting an initial assessment of the tubes in a bundle of tubes, comparing the stored data and estimating the number of cleaning cycles that will be required, and re-conducting the evaluation of the state of the tubes after every cleaning cycle or after every few cleaning cycles.

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Номер записи: 30
09-01-2014 дата публикации

APPARATUS FOR ESTIMATING A RESONANT FREQUENCY OF A WIND TURBINE TOWER

Номер: US20140012516A1
Автор: Nielsen Rasmus
Принадлежит: KK-ELECTRONIC A/S

The invention regards an apparatus for estimating a resonant frequency of a wind turbine tower, comprising a measuring module adapted for measuring acceleration values of the wind turbine tower wherein the acceleration values represent acceleration of the wind turbine tower, a filter module adapted for receiving the measured acceleration values, the filter module comprises a variable filter wherein the variable filter is adapted to attenuate frequencies in a band hereby attenuating frequencies for an output of the filter module, an adaptive algorithm module comprising an adaptive algorithm wherein the adaptive algorithm module is adapted for communicating with the filter module and wherein the adaptive algorithm is adapted to minimise the energy of the output of the filter module by adjusting the band of attenuated frequencies, a resonant frequency estimating module adapted for estimating the resonant frequency of a wind turbine tower based on the attenuated frequencies. 1. Apparatus for estimating a resonant frequency of a wind turbine tower , comprisinga measuring module adapted for measuring acceleration values of the wind turbine tower wherein the acceleration values represent acceleration of the wind turbine tower,a filter module adapted for receiving the measured acceleration values, the filter module comprises a variable filter wherein the variable filter is adapted to attenuate frequencies in a band hereby attenuating frequencies for an output of the filter module,an adaptive algorithm module comprising an adaptive algorithm wherein the adaptive algorithm module is adapted for communicating with the filter module and wherein the adaptive algorithm is adapted to minimise the energy of the output of the filter module by adjusting the band of attenuated frequencies,a resonant frequency estimating module adapted for estimating the resonant frequency of a wind turbine tower based on the attenuated frequencies.2. Apparatus according to claim 1 , wherein ...

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Номер записи: 31
23-01-2014 дата публикации

Non-destructive evaluation methods for machine-riveted bearings

Номер: US20140020467A1
Автор: Anthony Restivo, Eric Bridges, Surendra Singh
Принадлежит: Honeywell International Inc

The disclosed embodiments generally relate to non-destructive evaluation methods. In an embodiment, a method for non-destructive evaluation of a machine-riveted bearing includes positioning a first plurality of sensors in the region of interest, the first plurality of acoustic sensors being provided in a phased array, positioning a second plurality of sensors in the region of interest, the second plurality of sensors being provided in a phased array, inducing a vibration in the region of interest using the first plurality of sensors and receiving a resonance frequency spectra using the second plurality of sensors, and comparing the received resonance frequency spectra against a reference spectra to determine the presence of an anomaly in the region of interest.

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Номер записи: 32
23-01-2014 дата публикации

FILM CRACK DETECTING APPARATUS AND FILM FORMING APPARATUS

Номер: US20140020626A1
Автор: HASEBE Kazuhide, SUGAWARA Yudo
Принадлежит: TOKYO ELECTRON LIMITED

Provided is a film crack detecting apparatus capable of recognizing a possibility of occurrence of particles in real time by detecting film cracks of an unnecessary film adhered to a probe unit provided in a processing container. The film crack detecting apparatus is provided in a film forming apparatus, which includes a processing container configured to accommodate an object to be processed and forms a thin film on a surface of the object, to perform a film crack detection operation. The film crack detecting apparatus includes a probe unit installed within the processing container, an elastic wave detecting unit attached to an end of the probe unit to detect an elastic wave, and a determination unit configured to determine whether the maintenance of the processing container is necessary based on a detection result of the elastic wave detecting unit. 1. A film crack detecting apparatus provided in a thin film forming apparatus which includes a processing container configured to accommodate an object to be processed and forms a thin film on a surface of the object , the film crack detecting apparatus comprising:a probe unit provided within the processing container;an elastic wave detecting unit attached to an end of the probe unit and configured to detect an elastic wave; anda determination unit configured to determine whether a maintenance of the processing container is necessary based on a detection result of the elastic wave detecting unit.2. The film crack detecting apparatus of claim 1 , wherein the probe unit is provided along a height direction of the processing container.3. The film crack detecting apparatus of claim 1 , wherein the probe unit includes a probe body which is provided with a vertical probe portion having a lower end fixed to a lower end of the processing container and extending along a height direction of the processing container.4. The film crack detecting apparatus of claim 2 , wherein the probe body is provided with two vertical probe ...

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Номер записи: 33
30-01-2014 дата публикации

Acoustic Sensor II

Номер: US20140026665A1
Автор: Keady John
Принадлежит:

At least one exemplary embodiment is directed to an acoustic sensor that can be used to identify various fluids as well as concentrations of compounds dissolved in liquids. 1. An acoustic sensor comprising:a first device configured to emit a first acoustic signal within an emission frequency range;a first microphone configured to measure a first measurement signal; anda second microphone configured to measure a second measurement signal, where at least a first portion of the first acoustic signal passes through the medium, where the first measurement signal includes at least a second portion of the first acoustic signal, where the second measurement signal includes at least a third portion of the first acoustic signal, where the third portion of the first acoustic signal passes through at least a portion of the medium.2. The sensor according to claim 1 , further including:a processor; andcomputer readable memory, where the second and third portions are stored in the computer readable memory.3. The sensor according to claim 2 , where the processor is configured to compare the second and third portions against each other and compare the result to stored identification data claim 2 , where a match of the result with the stored identification data within a predetermined error produces an identification of the medium.4. The sensor according to where the result is the coherence between the second and third portions.5. The sensor according to claim 3 , where the result is the complex transfer function.6. The sensor according to claim 3 , where the result is the phase angle difference between the second and third portions.7. The sensor according to claim 4 , where the match occurs when the result compared to stored values within +/−0.1.8. The sensor according to claim 5 , where the match occurs when the result compared to stored values is within +/−0.1 dB.9. The sensor according to claim 6 , where the match occurs when the result compared to stored values is within +/−5 ...

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Номер записи: 34
30-01-2014 дата публикации

Method And Device for Measuring Corrosion Metal Loss

Номер: US20140028328A1
Автор: Hegeon Kwun, Ronald H. Peterson
Принадлежит: Southwest Research Institute SwRI

A method and system for detecting corrosion metal loss. One may provide a guided wave probe that includes an electromechanical device and a corrosion probe. This may be followed by measuring a baseline guided wave attenuation value of the corrosion probe with no corrosion. One may then periodically measure the guided wave attenuation of the corrosion probe and detect an increase in guided wave attenuation values and identify metal corrosion associated with the increase in guided wave attenuation values. This may then be followed by estimating the corrosion metal loss of the metallic component.

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Номер записи: 35
06-02-2014 дата публикации

STRENGTH PROOF TEST METHOD AND DEVICE TO BE USED THEREIN

Номер: US20140033820A1
Автор: Ikeda Junji, Wakayama Shuichi
Принадлежит:

The present invention is intended for improving the reliability of a strength proof test method for ceramic parts. The present invention is directed to a strength proof test method for making total inspection of ceramic parts, including: applying a prescribed load to the ceramic parts; and at the same time, making an acoustic emission measurement, in which the ceramic parts are considered as passing when the ceramic parts are not fractured in the test and the variation of acoustic emission energy is not more than a threshold. 1. A strength proof test method for making total inspection of ceramic parts before use , comprising:applying a prescribed load to the ceramic parts; andat the same time, making an acoustic emission measurement, in which the ceramic parts shall be considered as passing when the ceramic parts are not fractured in the test and the variation of acoustic emission energy is not more than a threshold.2. The strength proof test method according to claim 1 , wherein the location of acoustic emission occurrence is identified using two or more acoustic emission sensors.3. The strength proof test method according to claim 1 , wherein the ceramic parts are analyzed for stress distribution state in actual use by the finite element method to determine a stress concentration region in the ceramic parts claim 1 , andthe ceramic parts shall be considered as passing when the ceramic parts are not fractured in the test and the acoustic emission energy occurring in the stress concentration region is not more than a threshold.4. The strength proof test method according to claim 1 , wherein the ceramic parts are in vivo implant members.5. The strength proof test method according to claim 4 , wherein the in vivo implant members are artificial joint components or dental implant members.6. The strength proof test method according to claim 5 , wherein the artificial joint components are ceramic femoral heads for artificial hip joint claim 5 , inlays for artificial hip ...

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Номер записи: 36
13-02-2014 дата публикации

PIEZOELECTRIC RESONATOR, ETCHING AMOUNT DETECTING DEVICE, AND OSCILLATOR

Номер: US20140041454A1
Автор: ISHIKAWA MANABU, KOYAMA Mitsuaki, MUTOH Takeru, Sato Shinichi
Принадлежит: NIHON DEMPA KOGYO CO., LTD.

A piezoelectric resonator includes a plate-shaped crystal element, excitation electrodes, and an unwanted response suppression portion. The excitation electrodes are disposed on both surfaces of the crystal element. The unwanted response suppression portion is formed by inverting a crystallographic axis of the crystal element to suppress an unwanted response that oscillates at a different frequency from a frequency of a main vibration of the crystal element. 1. A piezoelectric resonator , comprising:a plate-shaped crystal element;excitation electrodes disposed on both surfaces of the crystal element; andan unwanted response suppression portion formed by inverting a crystallographic axis of the crystal element to suppress an unwanted response that oscillates at a different frequency from a frequency of a main vibration of the crystal element.2. The piezoelectric resonator according to claim 1 , whereinthe unwanted response suppression portion is formed by inverting an X-axis, the X-axis being the crystallographic axis of the crystal element.3. The piezoelectric resonator according to claim 1 , whereina plurality of the unwanted response suppression portions are disposed symmetrically to the center of the excitation electrode.4. The piezoelectric resonator according to claim 3 , whereinthe excitation electrode is formed in a quadrangular shape, the quadrangular shape being one of a rectangular shape and a square shape where lengths of four sides are equal to one another, a first unwanted response suppression portion and a second unwanted response suppression portion disposed on one diagonal line of the quadrangular shape that is an outline of the excitation electrode, the first and second unwanted response suppression portions being symmetrical to each other with respect to a center of gravity of the quadrangular shape; and', 'a third unwanted response suppression portion and a fourth unwanted response suppression portion disposed on another diagonal line of the ...

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Номер записи: 37
20-02-2014 дата публикации

WEAK BOND DETECTION

Номер: US20140047922A1
Автор: Adams Douglas E., Sharp Nathan D., Sterkenburg Ronald
Принадлежит: PURDUE RESEARCH FOUNDATION

Apparatuses and methods are disclosed for determining whether a structure of bonded layers includes locations where the layers are weakly bonded. Embodiments include evaluating the frequency response of the structure in response to vibrational inputs. Alternate embodiments include evaluating the non-linear response of the structure using a modal analysis. Further embodiments include obtaining the vibrational information with an accelerometer contacting the structure, while additional embodiments include exciting the structure with an impact force, which may be applied at multiple locations on the structure's surface. Still further embodiments include performing a MAC, COMAC, and/or FRF analysis. Still other embodiments include varying the amplitude of the input vibration. Additional embodiments locate the areas of weakened bonding. Still other embodiments include methods and apparatuses for simulating a laminated structure with defective bonding, such as kiss bonding. 1. A method , comprising the acts of:vibrating a structure of bonded layers;evaluating a modal response of the structure to said vibrating; anddetermining the existence of weak bonding between layers of the structure by said evaluating.2. The method of claim 1 , wherein said vibrating includes impacting the structure.3. The method of claim 1 , wherein said vibrating includes impacting the structure with a modal hammer.4. The method of claim 1 , wherein said vibrating includes vibrating the structure at multiple locations.5. The method of claim 4 , wherein the vibration amplitude at each of the multiple locations is within ten percent (10%) of a target vibration amplitude.6. The method of claim 4 , wherein the multiple locations form a repeating spatial pattern.7. The method of claim 4 , wherein the multiple locations do not form a repeating spatial pattern.8. The method of claim 1 , wherein said vibrating includes vibrating the structure with at least two different amplitudes.9. The method of claim 8 , ...

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Номер записи: 38
27-02-2014 дата публикации

MONITORING UNIT AND METHOD FOR DETECTING STRUCTURAL DEFECTS WHICH CAN OCCUR IN AN AIRCRAFT NACELLE DURING USE

Номер: US20140053649A1
Автор: Maalioune Hakim
Принадлежит: AIRCELLE

The present disclosure relates to a monitoring assembly for detecting structural detects. The monitoring assembly includes a composite sandwich structure with two distinct strata, a calculation unit and a plurality of sensors for generating signals representative of an amplitude or frequency of vibrations produced in a structure. Each sensor is formed by an electromechanical microsystem including a converter for converting mechanical energy into electrical energy. In particular, the calculation unit evaluates differences between a current transfer function resulting from the signals and a predetermined nominal transfer function, compares each of the differences with a respective detection threshold, and evaluates a size or a position of the structural defect in the structure. 1. A monitoring assembly for detecting structural defects that may appear in an aircraft nacelle in service , the monitoring assembly comprising:at least one composite material sandwich structure with at least two distinct strata, the composite material sandwich structure being adapted for forming at least one part of the aircraft nacelle; anda plurality of sensors arranged so as to generate signals representative at least one of an amplitude and a frequency of vibrations produced in the composite material sandwich structure when the aircraft nacelle is in service, each sensor for emitting said signals by electromagnetic waves, wherein each sensor is formed by an electromechanical microsystem (MEMS) comprising means for converting mechanical energy into electrical energy; and for evaluating the differences existing between a current transfer function resulting from said signals and a predetermined nominal transfer function;', 'for effecting a comparison between each of said differences and a respective detection threshold (HD); and', 'on the basis of said comparison, for estimating or evaluating a size and/or a position of said structural defect in the composite material sandwich structure., ' ...

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Номер записи: 39
06-03-2014 дата публикации

Ultrasonic Spectroscopic Analysis-Based Inspection of Rail Components

Номер: US20140060190A1
Автор: Johnson William B., Mian Zahid F.
Принадлежит: INTERNATIONAL ELECTRONIC MACHINES CORPORATION

A solution for evaluating the condition of a rail component based on resonant response profiles across a set of bands of vibrations. The vibrations can be induced into the target component during normal operation of the target component. The resonant response profile of the rail component can vary depending on wear or damage, and thus can be used to determine whether the rail component can safely remain in use. An embodiment comprises an isolated segment of rail of a length selected to allow a single railroad wheel on it at a time, with a set of devices which can acquire the resonance signals from the wheel. 1. A method for resonant ultrasonic analysis-based inspection of a rail component , the method comprising:detecting and recording resonances produced by vibrations of a spectrum of frequencies in an in-situ rail component as resonance data;determining a set of characteristics of resonant peaks within a frequency band of interest of the resonance data;comparing the set of characteristics with an expected resonance profile; anddetermining a condition of the rail component based on the comparing.2. The method of claim 1 , wherein the rail component is a railroad wheel.3. The method of claim 2 , further comprising selecting the spectrum of frequencies based on modeling of a set of characteristics of the railroad wheel.4. The method of claim 2 , further comprising selecting the spectrum of frequencies based on tests on a set of exemplar railroad wheels.5. The method of claim 1 , wherein the expected resonance profile is a sound-based parametric model using invariant feature sets representing a particular rail component or a particular type of rail component.6. The method of claim 1 , wherein the expected resonance profile is based on a set of known rail components.7. The method of claim 1 , wherein the expected resonance profile is based on a set of prior inspections performed on the rail component.8. The method of claim 7 , further comprising refining the expected ...

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Номер записи: 40
13-03-2014 дата публикации

DETECTION AND MEASUREMENT OF DEFECT SIZE AND SHAPE USING ULTRASONIC FOURIER-TRANSFORMED WAVEFORMS

Номер: US20140074410A1
Автор: Gilbert Jason A., Glavicic Michael G.
Принадлежит: Rolls-Royce Corporation

A system may include a data analysis device that is configured to receive from an ultrasonic waveform detector ultrasonic waveform data representative of an ultrasonic waveform that propagated through a sample and resonated within a defect within the sample. The data analysis device may be further configured to select a portion of the ultrasonic waveform data, apply a Fast Fourier Transform to the portion of the ultrasonic waveform data to transform the portion from a time domain to a frequency domain, identify a characteristic frequency of the portion in the frequency domain, and determine a characteristic of the defect based on the characteristic frequency of the portion. In some examples, the characteristic of the defect may be at least one of an approximate size or an approximate shape of the defect. 1. A system comprising: receive from an ultrasonic waveform detector ultrasonic waveform data representative of an ultrasonic waveform that propagated through a sample and resonated within a defect within the sample;', 'select a portion of the ultrasonic waveform data;', 'apply a Fast Fourier Transform to the portion of the ultrasonic waveform data to transform the portion from a time domain to a frequency domain;', 'identify a characteristic frequency of the portion in the frequency domain; and', 'determine a characteristic of the defect by at least one of (1) comparing the characteristic frequency to a calibration curve or (2) calculating an approximate size of the defect using at least one equation that relates the characteristic frequency to the approximate size of the defect., 'a data analysis device configured to26-. (canceled)7. The system of claim 1 , wherein the data analysis device is configured to determine the characteristic of the defect by comparing the characteristic frequency to the calibration curve claim 1 , and wherein the calibration curve comprises a plot of characteristic frequencies of defects of a known shape and known sizes versus an inverse ...

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Номер записи: 41
20-03-2014 дата публикации

Testing for defective manufacturing of microphones and ultralow pressure sensors

Номер: US20140076052A1
Автор: Andrew J. Doller, Michael J. Daley
Принадлежит: ROBERT BOSCH GMBH

A method of testing a MEMS pressure sensor device such as, for example, a MEMS microphone package. The MEMS pressure sensor device includes a pressure sensor positioned within a housing and a pressure input port to direct acoustic pressure from outside the housing towards the pressure sensor. An acoustic pressure source is activated and acoustic pressure from the acoustic pressure source is directed to the pressure input port and to an exterior location of the housing other than the pressure input port. Based on the output signal of the pressure sensor, it is determined whether any defects exist that allow acoustic pressure to reach the pressure sensor through the exterior of the housing at locations other than the pressure input port.

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Номер записи: 42
27-03-2014 дата публикации

Acoustic wave (aw) sensing devices using live cells

Номер: US20140087451A1
Автор: Abiche H. Dewilde, Gang Wang, Hongwei Sun, Jianping Zhang, Joel M. Therrien, Kenneth A. Marx, Lian Dai, Malavika Vashist, Sai Liu, Susan J. Braunhut
Принадлежит: University of Massachusetts UMass

In one embodiment according to the invention, there is provided a method of sensing a response of a living cell or virus to a change in conditions. The method comprises applying an essentially constant external electromotive force that causes oscillation of an acoustic wave device at essentially constant amplitude and frequency under steady state conditions. The acoustic wave device has attached at least one living cell or virus. A combined oscillating system including the acoustic wave device and the living cell or virus exhibits a fundamental frequency and at least one harmonic frequency of the combined oscillating system. The living cell or virus is exposed to a change in an environmental condition while oscillating the combined oscillating system under the essentially constant external electromotive force, whereby a response of the living cell or virus to the change in environmental condition will be indicated by a change in at least one of frequency and amplitude of the oscillation of at least one harmonic frequency of the combined oscillating system.

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Номер записи: 43
01-01-2015 дата публикации

METHOD FOR DETERMINING MECHANICAL DAMAGE TO A ROTOR BLADE OF A WIND TURBINE

Номер: US20150000404A1
Автор: Brenner Daniel, Schollbach Dirk
Принадлежит: ROBERT BOSCH GMBH

A method for detecting mechanical damage to a rotor blade of a wind turbine includes measuring vibrations of the rotor blade and generating a frequency-dependent vibration signal. A value of the signal energy over a predetermined frequency range of the vibration signal is determined at each of a number of measuring times and the respectively determined signal energy values are evaluated with respect to time in order to detect mechanical damage. 1. A method for identifying mechanical damage to a rotor blade of a wind turbine , comprising:sensing vibrations of the rotor blade;generating a frequency-dependent vibration signal;determining in each case a signal energy measure, over a predefined frequency range of the vibration signal, at a number of measurement instants; and evaluating the respectively determined signal energy measures with respect to time, so as to identify mechanical damage.2. The method as claimed in claim 1 , wherein the predefined frequency range has a width of at least 50 Hz claim 1 , 100 Hz claim 1 , 250 Hz claim 1 , or 500 Hz.3. The method as claimed in claim 1 , wherein the predefined frequency range includes frequencies above 50 Hz.4. The method as claimed in claim 1 , wherein the predefined frequency range includes frequencies below 1000 Hz.5. The method as claimed in claim 1 , wherein a frequency range of approximately 150 to approximately 350 Hz claim 1 , 500 Hz claim 1 , or 1000 Hz is used as a predefined frequency range.6. The method as claimed in claim 1 , wherein the signal energy measure is determined on the basis of a mean signal energy in the frequency range.7. The method as claimed in claim 1 , wherein the evaluation in respect of time comprises comparing the signal energy measure of a rotor blade with a corresponding signal energy measure of another rotor blade of the same wind turbine claim 1 , and wherein mechanical damage is identified if a difference between the time characteristics of the two signal energy measures exceeds a ...

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Номер записи: 44
02-01-2020 дата публикации

NANOPARTICLES SEQUENTIALLY EXPOSED TO LOW INTENSITY ACOUSTIC WAVES FOR MEDICAL OR COSMETIC APPLICATIONS

Номер: US20200000914A1
Автор: Alphandery Edouard
Принадлежит: NANOBACTERIE

An acoustic wave medical treatment of a body part of an individual in which nanoparticles are administered to the body part of the individual and the acoustic wave is applied on the body part. The acoustic wave is sequentially applied on the body part, and/or the nanoparticles are magnetosomes. Also, compositions that include these nanoparticles. 115-. (canceled)16. A method of medically treating a body part of an individual with an acoustic wave , comprising applying the acoustic wave on the body part , wherein the acoustic wave is sequentially applied and/or is unfocused.18. The method according to claim 17 , wherein t claim 17 , t claim 17 , and/or tis between 10seconds and 10minutes.19. The method according to claim 17 , wherein a sequence is repeated at least 2 times.20. The method according to claim 17 , comprising at least one session claim 17 , wherein a session consists of several sequences separated by a lapse of time that is longer than t claim 17 , t claim 17 , t claim 17 , t+t claim 17 , or t+t claim 17 , preferentially by a factor of more or less than 1.001.21. The method according to claim 16 , wherein the unfocused acoustic wave has at least one property selected from the group consisting of:{'sup': −5', '3, 'i) the unfocused acoustic wave covers more than 10% by volume of the body part, using less than 10application spots,'}{'sup': −10', '3, 'ii) the unfocused acoustic wave is applied over an acoustic wave volume that is larger than 10cm,'}{'sup': '3', 'iii) the unfocused acoustic wave is applied over an acoustic wave volume that is larger than the nanoparticle region, body part, healthy site, or pathological site, either by a factor larger or equal to than 1.1 or by more than 1 cm, and'}{'sup': '3', 'iv) the unfocused acoustic wave is applied over an acoustic wave volume that is larger, either by a factor larger or equal to than 1.1 or by more than 1 cm, than the acoustic wave volume that is reached by or exists with or results from a focused ...

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Номер записи: 45
06-01-2022 дата публикации

APPARATUS, METHOD AND COMPUTER PROGRAM FOR DETECTING DEFECTS

Номер: US20220003720A1
Автор: CATTON Phil, LAU Wai, WRIGHT Christopher
Принадлежит:

According to various, but not necessarily all, embodiments there is provided an apparatus comprising means for: controlling one or more electroacoustic transducers of a device to create a standing wave having a displacement antinode at an expected location of a component of the device; receiving a signal representing sound generated by vibration of the component driven by the standing wave; causing analysis of the signal to determine whether there is a defect based on whether the signal represents a sound that would be expected to result from vibration of the component driven by the standing wave in the absence of a defect. 1. An apparatus comprising:at least one processor; andat least one memory including computer program code;the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:control one or more electroacoustic transducers of a device to create a standing wave having a displacement antinode at an expected location of a component of the device;receive a signal representing sound generated by vibration of the component driven by the standing wave;cause analysis of the signal to determine whether there is a defect based on whether the signal represents a sound that would be expected to result from vibration of the component driven by the standing wave in the absence of a defect.2. The apparatus of wherein the at least one memory and the computer program code are configured to claim 1 , with the at least one processor claim 1 , cause the apparatus to:control the one or more electroacoustic transducers to cause a change in the position of the displacement antinode in response to a trigger event.3. The apparatus of wherein the at least one memory and the computer program code are configured to claim 1 , with the at least one processor claim 1 , cause the apparatus to:control the one or more electroacoustic transducers to cause a position of the displacement antinode to traverse at least one ...

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Номер записи: 46
05-01-2017 дата публикации

Integrated Vibration Measurement and Analysis System

Номер: US20170003163A1
Автор: Joseph C. Baldwin
Принадлежит: Computational Systems Inc

A vibration data collection system performs an integration or differentiation process on incoming digitized vibration data in real time. The system uses a digital Infinite Impulse Response (IIR) filter running at the input data rate to provide the integration or differentiation function. With this approach, the system reduces hardware complexity and data storage requirements. Also, the system provides the ability to directly integrate or differentiate stored time waveforms without resorting to FFT processing methods.

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Номер записи: 47
05-01-2017 дата публикации

Environmental parameter sensor

Номер: US20170003176A1
Автор: Jozef Thomas Martinus Van Beek, Kim Phan Le, Niels Klemans
Принадлежит: NXP BV

An environmental parameter sensor for a mobile device is described comprising a first acoustic transducer; a second acoustic transducer arranged at a predetermined distance from the first acoustic transducer; a controller coupled to the first acoustic transducer and the second acoustic transducer; wherein the controller is configured to determine at least one of a time-of-flight value and an attenuation value of an acoustic signal between the first acoustic transducer and the second acoustic transducer and to determine at least one environmental parameter from the at least one of the time-of-flight value and the attenuation value The environmental parameter sensor may determine environmental parameters such as temperature, wind speed, and humidity from acoustic measurements.

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Номер записи: 48
05-01-2017 дата публикации

Touch detection device used in water handling equipment, and faucet apparatus including the same

Номер: US20170003253A1
Автор: Yoshiyuki Kaneko
Принадлежит: TOTO LTD

A touch detection device capable of operation by a light touch, and of preventing false operations even when used in water handling equipment includes a sensing portion for sensing contact by a target object; a vibration excitation element attached to this sensing portion, a drive circuit for exciting vibration in the sensing portion, and a contact determining circuit for determining whether a target object is contacting a sensing portion based on vibration of the sensing portion after stopping the application of an AC voltage to the vibration excitation element by this drive circuit.

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Номер записи: 49
07-01-2016 дата публикации

METHOD FOR DETECTING TEMPORALLY VARYING THERMOMECHANICAL STRESSES AND/OR STRESS GRADIENTS OVER THE WALL THICKNESS OF METAL BODIES

Номер: US20160003780A1
Автор: Altpeter Iris, BERGHOLZ Steffen, Dobmann Gerd, Herrmann Hans-Georg, Hübschen Gerhard, Kurz Jochen, RUDOLPH Jürgen, TSCHUNCKY Ralf
Принадлежит:

The present invention relates to a method for detecting temporally varying thermomechanical stresses and/or stress gradients over the wall thickness of metal bodies, in particular pipelines. In the method, the temperature on the outer surface of the body is measured in order to determine a temperature progression and stress progression therefrom. In addition, electromagnetic ultrasonic transducers are used at at least one measuring point on the outer surface in order to determine the progression of the stresses and/or stress gradients over time over the wall thickness of the body in conjunction with the result of the temperature measurement. The method allows the fatigue monitoring of pipelines even in the event of rapid stress changes. 1. A method for detecting temporally varying thermomechanical stresses and/or stress gradients over the wall thickness of metal bodies , in particular pipelines , in which a temperature is measured at at least one measurement point on an outer surface of the body and additional measurements are carried out using electromagnetic ultrasound transducers in the region of the measurement point to determine the stresses and/or stress gradients over the wall thickness of the body via the measured temperature from the additional measurements ,wherein a temperature curve between an inner surface and the outer surface is ascertained from the measured temperature and is used for the determination of the stresses and/or stress gradients over the wall thickness of the body from the additional measurements.2. The method as claimed in claim 1 ,characterized in that ultrasound runtime, amplitude, and/or eddy current impedance measurements are carried out using the electromagnetic ultrasound transducers, wherein the stresses and/or stress gradients are determined by analyzing the ultrasound runtime, amplitude, and/or eddy current impedance measurements in conjunction with the measured temperature or the ascertained temperature curve.3. The method as ...

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Номер записи: 50
02-01-2020 дата публикации

AIR-CONDITIONING APPARATUS

Номер: US20200003449A1
Автор: HIRASHIKI Isamu, Morikawa Akira, Nomura Akane, Saito Tadashi
Принадлежит: Mitsubishi Electrict Corporation

An air-conditioning apparatus makes it possible to detect the presence or absence of a biofilm without the influence of water surface. The air-conditioning apparatus performs at least cooling operation or humidifying operation. The air-conditioning apparatus includes a drain pan to receive water, a draining unit to drain water received in the drain pan, and a detection unit to detect a biofilm formed in the drain pan. The detection unit performs the detection of the biofilm in a state in which draining of water from the drain pan is complete. 1. An air-conditioning apparatus configured to perform at least cooling operation or humidifying operation , the air-conditioning apparatus comprising:a drain pan configured to receive water;a draining unit configured to drain water received in the drain pan; anda detection unit configured to detect a biofilm formed in the drain pan,the detection unit being configured to perform detection of the biofilm in a state in which draining of water from the drain pan is complete.2. The air-conditioning apparatus of claim 1 ,being configured to complete drainage of water from the drain pan is complete when a predetermined period of time elapses after the cooling operation or humidifying operation ends.3. The air-conditioning apparatus of claim 1 , further comprisinga water level sensor configured to detect a level of water received in the drain pan,the air-conditioning apparatus being configured to complete drainage of water from the drain pan when a water level detected by the water level sensor is zero or approximately equal to zero.4. The air-conditioning apparatus of claim 1 , an ultrasound transmitter configured to transmit an ultrasonic wave, and', 'an ultrasound detector configured to detect the ultrasonic wave, and, 'wherein the detection unit includes'}wherein the ultrasound transmitter transmits the ultrasonic wave in a state in which drainage of water is complete.5. The air-conditioning apparatus of claim 1 ,wherein the ...

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Номер записи: 51
02-01-2020 дата публикации

BANDWIDTH-SELECTABLE ACOUSTIC EMISSION APPARATUS AND METHODS FOR TRANSMITTING TIME-AVERAGED SIGNAL DATA

Номер: US20200003732A1
Автор: Dahme Bret Anthony
Принадлежит:

Bandwidth-selectable acoustic emission apparatus and methods for transmitting time-averaged signal data are described. An example apparatus includes an integrated external preamplifier device having a bandwidth-selectable analog filter and a data extractor. The integrated external preamplifier device is to receive an analog acoustic emission signal generated via an acoustic emission sensor operatively coupled to the integrated external preamplifier device. The bandwidth-selectable analog filter is to filter the analog acoustic emission signal based on a software-programmed bandwidth to generate a filtered analog acoustic emission signal. The data extractor is to extract a time-averaged analog signal from the filtered analog acoustic emission signal, and to transmit the time-averaged analog signal from the integrated external preamplifier device to an external data acquisition system. 1. An apparatus , comprising:an integrated external preamplifier device including a bandwidth-selectable analog filter and a data extractor, the integrated external preamplifier device to receive an analog acoustic emission signal generated via an acoustic emission sensor operatively coupled to the integrated external preamplifier device, the bandwidth-selectable analog filter to filter the analog acoustic emission signal based on a software-programmed bandwidth to generate a filtered analog acoustic emission signal, the data extractor to extract a time-averaged analog signal from the filtered analog acoustic emission signal, the data extractor to transmit the time-averaged analog signal from the integrated external preamplifier device to an external data acquisition system.2. The apparatus of claim 1 , where the integrated external preamplifier device further includes a preamplifier claim 1 , the bandwidth-selectable analog filter being integrated within the preamplifier.3. The apparatus of claim 1 , wherein the integrated external preamplifier device further includes a preamplifier to ...

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Номер записи: 52
07-01-2021 дата публикации

INSPECTION DEVICE FOR DETERMINING INSERTION OF CONNECTOR, AND ROBOT DEVICE HAVING INSPECTION DEVICE

Номер: US20210003535A1
Автор: FURUYA Yoshitake, MINE Takahide
Принадлежит:

An inspection device includes an oscillator for generating ultrasonic waves toward a first connector, and a vibration receiver for receiving vibrations generated in the first connector. The inspection device includes a vibration controller for analyzing the vibrations received by the vibration receiver. The vibration controller detects a resonance frequency by converting, by Fourier transform, the vibrations received by the vibration receiver. The vibration controller determines an insertion amount of the first connector into the second connector, based on the detected resonance frequency. 1. An inspection device for inspecting a state in which a first connector having a shape to be fitted to a second connector is inserted into the second connector , comprising:an oscillator for generating ultrasonic waves toward the first connector;a vibration receiver for receiving vibrations generated in the first connector; anda vibration controller for driving the oscillator and analyzing the vibrations received by the vibration receiver, whereinthe vibration controller detects a resonance frequency by converting, by Fourier transform, the vibrations received by the vibration receiver, and determines, based on the detected resonance frequency, an insertion amount of the first connector into the second connector.2. The inspection device according to claim 1 , wherein a determination range when the first connector is inserted into the second connector by an appropriate insertion amount is previously determined claim 1 , andthe vibration controller determines that the insertion amount of the first connector is small when the detected resonance frequency is lower than the determination range.3. The inspection device according to claim 1 , wherein the vibration controller controls the oscillator so that the oscillator generates ultrasonic waves while continuously changing the frequency.4. The inspection device according to claim 1 , comprising an operation tool including the ...

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Номер записи: 53
03-01-2019 дата публикации

CRACK MEASUREMENT DEVICE AND METHOD

Номер: US20190004013A1
Автор: CHOI Sang-Woo, CHOI Tae-Hwa, HONG Jae-Suk, KIM Kwan-Tae, SHIN Nam-Ho
Принадлежит:

According to an exemplary embodiment in the present disclosure, a crack measurement device and a crack measurement method are provided. The crack measurement device according to an exemplary embodiment in the present disclosure includes: an ultrasonic sensor irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected and receiving a reflected wave, reflected from the bottom surface of the object to be inspected; and a monitoring unit providing information on a crack on the basis of intensity of the reflected wave. 1. A crack measurement device comprising:an ultrasonic sensor irradiating a first ultrasonic wave in a direction perpendicular to a bottom surface of an object to be inspected, so as to be focused on the bottom surface of the object to be inspected, receiving a reflected wave of the first ultrasonic wave reflected from the bottom surface of the object to be inspected, transmitting a second ultrasonic wave in a direction forming an acute angle with respect to the bottom surface of the object to be inspected, so as to be diffused toward the bottom surface of the object to be inspected, and receiving a diffracted wave of the second ultrasonic wave diffracted by a crack; anda monitoring unit extracting and providing information on whether or not the crack exists and a position of the crack on the basis of intensity of the reflected wave and extracting and providing information on a height of the crack using a time at which the diffracted wave is received.2. The crack measurement device of claim 1 , wherein the ultrasonic sensor includes:a transmitter including a plurality of piezoelectric elements disposed in a concave structure and irradiating the first ultrasonic wave;a receiver receiving the reflected wave; anda partition wall disposed between the transmitter and the receiver and having sound absorption properties.3. The crack ...

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Номер записи: 54
03-01-2019 дата публикации

METHOD FOR OBTAINING DATA RELATING TO THE ELASTICITY OF MATERIALS, USING TORSIONAL WAVES

Номер: US20190004015A1
Автор: MASSÓ GUIJARRO Paloma, MELCHOR RODRIGUEZ Juan Manuel, RUS CALBORG Guillermo
Принадлежит:

The invention relates to a method or operating mode which, using a device for emitting and receiving sonic and/or ultrasonic torsional waves, can be used to obtain data relating to the consistency or elasticity of quasi-incompressible solid media, preferably quasi-fluids or biological tissues, based on the separation of non-linear parameters. 1. Method for obtaining data relating to the elasticity of materials using torsional waves comprising the following steps of:emitting a sonic or ultrasonic torsional wave train on a specimen;selecting a time window of the received wave, originating from reflection on the specimen;calculating the Fourier transform of the wave function determined by the foregoing selection of time window;extracting the amplitudes from the fundamental harmonics, a, and from at least one of the harmonics of the second order, b, or higher;calculating one or more non-linearity parameters based on the extracted amplitudes of the harmonics.2. Method according to the preceding claim , characterized in that the emitted wave train consists of between 2 and 80 cycles , preferably between 3 and 10 cycles.3. Method according to any of the preceding claims , characterized in that the emitted torsional waves have a signal magnitude greater than 2 mV , more preferably greater than or equal to 5 mV.4. Method according to any of the preceding claims , characterized in that the excitation energy used for generating the wave train , in terms of the maximum amplitude of the preceding sinusoidal wave , is comprised between 0.1 V and 20 V , preferably between 2 and 10 V.5. Method according to any of the preceding claims , characterized in that the sinusoidal excitation frequency is in the range between 100 Hz and 100 kHz , preferably between 500 Hz and 5 kHz.6. Method according to any of the preceding claims , characterized in that the time window commences at the moment after the commencement of the received wave cycles and is associated with a number of cycles ...

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Номер записи: 55
01-01-2015 дата публикации

System and method for filtering noise from acoustic energy from a valve

Номер: US20150006091A1
Автор: Larry Gene Schoonover
Принадлежит: Dresser LLC

Embodiments of systems and methods that can filter acoustic energy from sources remote from the valve. These embodiments utilize signals from sensors that manifest acoustic energy from various locations on and/or about the valves. In one embodiment, the system includes sensors at locations proximate the valve and locations spaced apart from the valve. The system can further process the signals from these locations and, in one example, combines samples of data to form an energy signature of the valve that is effectively free of noise that emanates from upstream and/or downstream of the valve.

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Номер записи: 56
03-01-2019 дата публикации

Test Wafer With Optical Fiber With Bragg Grating Sensors

Номер: US20190006157A1
Автор: "OBanion William J.", Nguyen An-Dien, Nguyen Huy D.
Принадлежит:

An apparatuses relating generally to a test wafer, processing chambers, and method relating generally to monitoring or calibrating a processing chamber, are described. In one such an apparatus for a test wafer, there is a platform. An optical fiber with Fiber Bragg Grating sensors is located over the platform. A layer of material is located over the platform and over the optical fiber. 1. An apparatus for a test wafer , comprising:a platform;an optical fiber with Fiber Bragg Grating sensors located over the platform; anda layer of material located over the platform and over the optical fiber.2. The apparatus according to claim 1 , wherein the Fiber Bragg Grating sensors are each configured for a different center frequency for modulation thereof responsive to at least temperature.3. The apparatus according to claim 2 , wherein the Fiber Bragg Grating sensors are configured to filter wavelengths in a range of 1500 to 1600 nanometers.4. The apparatus according to claim 2 , wherein the optical fiber includes 50 or more of the Fiber Bragg Grating sensors.5. The apparatus according to claim 2 , further comprising a sealant disposed between the platform and the layer of material.6. The apparatus according to claim 2 , wherein the optical fiber between the platform and the layer of material includes disposition in a spiral or spiral-like pattern.7. The apparatus according to claim 2 , wherein an end of the optical fiber is positioned for communication with an optical lift pin.8. The apparatus according to claim 2 , further comprising:an optical eye coupled to an end of the optical fiber for optical communication to and from a light source-based detection system for a single-port and a single interface for receiving a source spectrum and transmitting a reflected spectrum.9. The apparatus according to claim 2 , wherein an end of the optical fiber is configured with a lens for optical communication to and from a light source-based detection system for a single-port and a ...

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Номер записи: 57
27-01-2022 дата публикации

METHOD FOR MONITORING THE QUALITY OF ULTRASONIC WELDING

Номер: US20220023978A1
Автор: Herzing Thomas, Klimas Felix, LEHMANN Lutz, Zemann Daniel
Принадлежит: Lisa Draexlmaier GmbH

A method for monitoring the quality of an ultrasonic weld includes monitoring a vibration behavior during a joining process with respect to an actual value of a vibration frequency and/or a vibration amplitude of at least one joining partner of joining partners involved in the joining process. A tool of an ultrasonic welding device is used in the joining process, and at least one measuring device is configured to quantify mechanical vibrations. The detected vibration behavior is analyzed using a Fourier analysis and compared to a predefined set value as reference value. 1. A method for monitoring quality of an ultrasonic weld , the method comprising: at least one of a vibration frequency and a vibration amplitude of at least one joining partner of joining partners involved in the joining process; and', 'at least one of a vibration frequency and a vibration amplitude of a tool of an ultrasonic welding device used in the joining process,, 'monitoring a vibration behavior during a joining process with respect to an actual value of at least one ofby measuring with at least one measuring device configured to quantify mechanical vibrations,wherein a detected vibration behavior is analyzed using a Fourier analysis and compared to a predefined target value as a reference value.2. The method according to claim 1 , wherein an optical measurement device is used to quantify the mechanical vibrations during the joining process.3. The method according to claim 1 , wherein at least one of an eddy current sensor and a laser vibrometer is used to quantify the mechanical vibrations during the joining process.4. The method according to claim 1 , wherein a plurality of measurement points are monitored by the at least one measuring device with regard to vibration behavior of the measurement points differing from respective target values.5. The method according to claim 4 , wherein one measurement point on at least one of a sonotrode claim 4 , an anvil claim 4 , a first joining partner ...

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Номер записи: 58
27-01-2022 дата публикации

METHOD FOR NON-DESTRUCTIVELY TESTING A QUALITY OF AN ULTRASONIC WELD

Номер: US20220023979A1
Автор: Herzing Thomas, Klimas Felix, LEHMANN Lutz, Zemann Daniel
Принадлежит: Lisa Draexlmaier GmbH

A method for non-destructive testing of a quality of an ultrasonic weld from a welding process includes detecting of a time-dependent measurement value over a period of time, where the measurement value is characteristic of a mechanical or electrical vibration behavior of a welding process to be tested. The method includes evaluating a measurement-value course of the detected time-dependent measurement value by using a Fourier analysis. The method further includes comparing a result of the evaluation to a reference value in order to test the quality of the weld. A measuring device and an ultrasonic welding system are also included. 1. A method for non-destructive testing of a quality of an ultrasonic weld from a welding process , the method comprising:detecting a time-dependent measurement value over a period of time, wherein the time-dependent measurement value is characteristic of a mechanical or electrical vibration behavior of the welding process;evaluating a measurement-value course of the detected time-dependent measurement value by using a Fourier analysis; andcomparing a result of the evaluation to a reference value in order to test the quality of the ultrasonic weld.2. The method according to claim 1 , wherein the period of time corresponds to a duration of the welding process.3. The method according claim 1 , wherein the time-dependent measurement value is characteristic of a mechanical vibration behavior of the welding process claim 1 , the mechanical vibration behavior comprising a shear force and a deflection of a sonotrode.4. The method according to claim 1 , wherein the time-dependent measurement value is characteristic of an electrical vibration behavior of the welding process claim 1 , the electrical vibration behavior comprising at least one of an electrical current and an electrical voltage for controlling a piezo actuator.5. The method according to claim 1 , wherein the detecting of the time-dependent measurement value comprises detecting a ...

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Номер записи: 59
27-01-2022 дата публикации

ULTRASONIC TESTING WITH SINGLE SHOT PROCESSING

Номер: US20220026201A1
Автор: Thomas Andrew
Принадлежит:

Examples of the present subject matter provide techniques for measuring thicknesses of materials using one or more acquisition cycles. The data from the one or more acquisition cycles may be amplified using a specified gain across the signal response, converted to a digital signal, and stored in a memory. The digital signal may be retrieved from memory, and signal processing techniques using one or more time variable threshold(s) may be used to calculate one or more thickness(es) of the testing object. 1. A method comprising:in response to a transmitted ultrasound signal into a test object, acquiring from a transducer probe a signal response in one or more acquisition cycles, the signal response including an electrical representation of one or more echoes received from the test object;applying a gain profile across the signal response to generate an amplified signal response;digitizing the amplified signal response to generate a digitized signal response; andcalculating from the digitized signal response one or more thicknesses of the test object using at least one time-variable threshold based on one or more associated threshold crossing events.2. The method of claim 1 , wherein the signal response is acquired in a single acquisition cycle and. wherein digitizing the amplified signal response includes performing a plurality of analog-to-digital conversions using one or more conversion circuits and blending outputs from the one or more conversion circuits corresponding to the plurality of analog-to-digital conversions to generate the digitized signal response.3. The method of claim 1 , wherein a plurality of signal responses are acquired in a plurality of acquisition cycles and wherein digitizing the amplified signal response includes performing a plurality of analog-to-digital conversions using one or more conversion circuits and time interleaving outputs from the one or more conversion circuits corresponding to the plurality of analog-to-digital conversions to ...

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Номер записи: 60
27-01-2022 дата публикации

Acoustic pipe condition assessment using coherent averaging

Номер: US20220026395A1
Автор: Bruce Robertson, Sebastien Perrier, Valentin Mircea Burtea
Принадлежит: Mueller International LLC

Methods, systems, and computer-readable storage media for accurate time delay estimation using coherent averaging. A plurality of out-of-bracket acoustical impulses are generated in a pipe segment of a fluid distribution system. Signal data representing the acoustical impulses sensed at two locations along the pipe segment are recorded. Precise timings for the generation of the acoustical impulses are obtained, and the acoustical impulses in the signal data recorded from the first location are averaged based on the precise timings to produce a near-sensor average impulse. Similarly, the acoustical impulses in the signal data recorded from the second location are averaged based on the same precise timings to produce a far-sensor average impulse. A time delay between arrival of the plurality of out-of-bracket acoustical impulses at the first and second locations is estimated from the timing of the near-sensor average impulse and the far-sensor average impulse.

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Номер записи: 61
14-01-2016 дата публикации

MULTICHANNEL IMPACT RESPONSE FOR MATERIAL CHARACTERIZATION

Номер: US20160011088A1
Автор: GUTHRIE William S., LARSEN Jacob, MAZZEO Brian, MCELDERRY Joseph
Принадлежит:

A non-destructive test system includes a plurality of impact devices including a knob configured to generate at least one flexural mode in a material when a surface of the material is impacted by the knob, a controller configured to independently control each of the plurality of impact devices, the controller having a communications channel for each of the plurality of impact devices, and a microphone configured to detect an acoustic response generated upon impact of the knob on the surface of the material, the acoustic response being based on the at least one flexural modes generated in the material. 1. A non-destructive test system comprising:a plurality of impact devices including a knob configured to generate at least one flexural mode in a material when a surface of the material is impacted by the knob;a controller configured to independently control each of the plurality of impact devices, the controller having a communications channel for each of the plurality of impact devices; anda microphone configured to detect an acoustic response generated upon impact of the knob on the surface of the material, the acoustic response being based on the at least one flexural modes generated in the material.2. The non-destructive test system of claim 1 , further comprising an encoder configured to generate a signal based on a bounce of the knob off the surface after impact on the surface.3. The non-destructive test system of claim 1 , whereinthe plurality of impact devices are attached to a trailer configured to traverse the surface,the plurality of impact devices are communicatively coupled to each other using an Ethernet protocol, andthe plurality of impact devices are communicatively coupled to the controller using the Ethernet protocol, each of the plurality of impact devices having a different address.4. The non-destructive test system of claim 1 , wherein the controller is further configured to determine a characteristic at a location associated with the impact of ...

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Номер записи: 62
14-01-2016 дата публикации

ECHOLOCATION DATA GENERATION

Номер: US20160011498A1
Автор: Ji Ting-Lan, McLaughlin Glen W., Napolitano David
Принадлежит:

Methods of probing a material under investigation using an ultrasound beam. Echolocation data is generated using a multi-dimensional transform capable of using phase and magnitude information to distinguish echoes resulting from ultrasound beam components produced using different ultrasound transducers. Since the multi-dimensional transform does not depend on using receive or transmit beam lines, a multi-dimensional area can be imaged using a single ultrasound transmission. In some embodiments, this ability increases image frame rate and reduces the amount of ultrasound energy required to generate an image. 1generating first data by converting echoes into electronic signals, the first data having a plurality of values associable with time; andgenerating the echolocation data using the first data and a data transform responsive to a phase or magnitude information.. A method of generating echolocation data comprising the steps of: This application is a continuation and claims the priority benefit of U.S. patent application Ser. No. 12/684,086 titled “Echolocation Data Generation,” filed Jan. 7, 2010, which is a divisional and claims the priority benefit of U.S. patent application Ser. No. 11/592,702 titled “Broad-Beam Imaging,” filed Nov. 3, 2006, which is a continuation and claims the priority benefit of U.S. patent application Ser. No. 10/759,558 entitled “Broad Beam Imaging Methods,” filed Jan. 16, 2004, which is a continuation and claims the priority benefit of U.S. patent application Ser. No. 10/211,391 entitled “Broad-Beam Imaging,” filed Aug. 1, 2002, which claims the priority benefit of U.S. provisional patent application No. 60/370,632 entitled “Broad-Beam Imaging,” filed Apr. 5, 2002; U.S. patent application Ser. No. 10/211,391 is also a continuation-in-part and claims the priority benefit of U.S. patent application Ser. No. 10/039,922 entitled “Block Switching in Ultrasound Imaging,” filed Oct. 20, 2001; U.S. patent application Ser. No. 10/211,391 is also a ...

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Номер записи: 63
14-01-2021 дата публикации

INLINE CYCLE FUSE

Номер: US20210010979A1
Автор: Eihusen John
Принадлежит:

A system and method of predicting impending failure of a pressure vessel include a pressure vessel, a fluid source, a line coupled to the pressure vessel and to the fluid source, an apparatus, a sensor and a controller. The apparatus includes a conduit and a containment structure. The containment structure includes a cavity separated from an interior of the conduit by a portion of a conduit wall of the conduit. The sensor is configured to determine a value of a physical property in the cavity. The controller is in signal communication with the sensor and configured to detect a change in the value. The method includes determining a first value of a physical property in the cavity, experiencing a failure of the conduit wall, determining a second value of the physical property in the cavity, and detecting a difference between the first and second values. 2. The system of comprising:a containment structure including a cavity separated from the interior of the conduit by the portion of the conduit wall; anda sensor configured to determine a value of a physical property in the cavity, wherein the physical property is selected from the group consisting of pressure, temperature, acoustic emission, conductivity, resistance, capacitance, optical, and substance concentration.3. The system of claim 2 , comprising:a controller in signal communication with the sensor and configured to detect a change in the value; andan indicator in signal communication with the controller.4. The system of further including a valve disposed between the fluid source and the pressure vessel.5. The system of claim 4 , wherein the valve is in signal communication with a controller.6. The system of herein the weakness is a discrete structure located on the portion of the conduit wall.7. A method of predicting impending failure of a pressure vessel claim 1 , the method including:fluidly connecting the pressure vessel to a source of pressurized fluid via a line so that pressurized fluid flows through ...

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Номер записи: 64
14-01-2021 дата публикации

SYSTEM IDENTIFICATION DEVICE, SYSTEM IDENTIFICATION METHOD, AND RECORDING MEDIUM

Номер: US20210010980A1
Автор: Inoue Hirofumi, Kikuchi Katsumi, Shinoda Shigeki, Takata Soichiro
Принадлежит: NEC Corporation

A system identification device includes an analysis unit that calculates a self-frequency response function on the basis of an input signal and an output signal measured by a measurement unit at a position where a subject physical system has been excited by a vibrating unit . The analysis unit performs system identification of the subject physical system by using an impulse response function obtained from the calculated self-frequency response function and an impulse response function of a virtual two-degrees-of-freedom model modeling the subject physical system that is the subject of analysis. This makes it possible to perform system identification of systems with close eigenvalues.

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Номер записи: 65
10-01-2019 дата публикации

INSPECTION DEVICE, INSPECTION METHOD, AND NON-TRANSITORY RECODING MEDIUM STORING INSPECTION PROGRAM

Номер: US20190011402A1
Автор: Kasai Shigeru, KINOSHITA Shohei
Принадлежит: NEC Corporation

Provided are an inspection device and the like capable of correctly determining a state of an inspection target without destroying the inspection target. An inspection device calculates vibration characteristic values representing a character of vibration information indicating vibrations measured by vibration sensors measuring a vibration of an inspection target; calculates a scattering degree indicating a scattering degree of the calculated vibration characteristic values among the vibrations measured by the vibration sensors; and determines a condition of the inspection target based on a magnitude of the calculated scattering degree. 1. An inspection device comprising:a characteristic value calculator configured to calculate vibration characteristic values representing a character of vibration information indicating vibrations measured by vibration sensors measuring a vibration of an inspection target;a scattering degree calculator configured to calculate a scattering degree indicating a scattering degree of the calculated vibration characteristic values among the vibrations measured by the vibration sensors; anda determiner configured to determine a condition of the inspection target based on a magnitude of the calculated scattering degree.2. The inspection device according to claim 1 , whereinthe characteristic value calculator calculates the vibration characteristic values for vibration modes included in the measured vibrations, andthe determiner determines a damage of the inspection target based on a weighted average of scattering degrees for the vibration modes.3. The inspection device according to further comprisinga classifier configured to classify the vibration information in accordance with a magnitude of amplitude of the vibrations in the vibration information, whereinthe scattering degree calculator calculates the scattering degree for the classified vibration information.4. The inspection device according to claim 1 , whereinthe characteristic value ...

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Номер записи: 66
10-01-2019 дата публикации

Method and Apparatus for Non-Destructive Measurement of Modulus of Elasticity and/or the Compressive Strength of Masonry Samples

Номер: US20190011405A1
Автор: Booth James, Brzev Svetlana, Cox Neil, Kennedy Diane, McEwen Bill
Принадлежит:

A method and apparatus for determining the compressive strength of masonry units based on airborne sonic signals generated by stimulating the samples with short duration, mechanical impulses are described. The non-destructive testing apparatus consists of a specimen support unit which mechanically isolates the masonry unit from the environment and from the support, a mechanical stimulator, and an acoustic response detector. The signals recorded are analyzed to extract the pertinent features which are then used to compute the compressive strength of the sample. The pertinent signals are deduced through a calibration of the masonry type being analyzed (material and shape) based on physical analysis of the sample's normal modes of vibration, or through Finite Element Analysis of the vibrations, or through direct empirical calibration. This non-destructive testing method is low-cost, readily implemented and provides a reliable technique for compressive strength estimation. 1. An apparatus for non-destructive measurement of a masonry specimen having prescribed physical attributes , the apparatus comprising:a stimulator arranged to apply a non-destructive stimulus to the specimen that will elicit an acoustic response;a response sensor arranged to capture sonic signals from the acoustic response to said non-destructive stimulus and generate a response signal that is representative of the captured sonic signals;a signal processor operatively associated with the response sensor for receiving the response signal from the response sensor and being arranged to execute programming instructions stored thereon so as to:analyse the response signal and quantify pertinent features of the response signal, andcalculate a compressive strength of the specimen based upon said prescribed physical attributes and the pertinent features quantified by the signal processor.2. The apparatus according to wherein the signal processor quantifies the pertinent features of the response signal ...

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Номер записи: 67
09-01-2020 дата публикации

FINGERPRINTING AND ANALYZING GEMSTONES

Номер: US20200011837A1
Автор: MAGANA Sally Catherine, Rhodes George Wyatt
Принадлежит: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

The embodiments disclosed herein relate to the examination of gemstones including diamonds, both cut/polished and rough, using the technology of Resonant Ultrasound Spectroscopy. The resonant frequencies are obtained by mechanically causing the stone to vibrate using a swept sine oscillator, sensing the resonance vibrations, and displaying the spectrum to yield a pattern describing the stone. The resonance fingerprints can be used to both track an individual stone to verify its integrity or to grade a rough stone to establish potential value. 1. A method , comprising: [ 'wherein the first input transducer is contacting a gemstone under evaluation;', 'sending an input signal to a first input transducer,'}, 'wherein the second receiver transducer is contacting the gemstone under evaluation;', 'receiving a resonance signal from a second receiver transducer,'}, 'stepping the input signal through a range of input frequencies;', 'receiving a range of received signals;, 'by a signal generator and a signal processor,'}processing, with algorithms, the range of received signals; andsending the processed range of received signals for the gemstone under evaluation to a computer for storage and display.2. The method of wherein the input signal is sent from the signal generator to the first transducer through an input amplifier; andwherein the received signal is received at the signal processor from the receiver transducer through a receiver amplifier.3. The method of wherein processing the received signal includes in-phase and quadrature components of the received signal.4. The method of wherein the signal processor includes a phase sensitive detector and digital signal processor.5. The method of wherein stepping the input signal through a range of input frequencies is stepped by 1 to 1000 Hz.6. The method of wherein the range of input frequencies is between 0.1 MHz and 4 MHz.7. The method of wherein the signal generator and the signal processor are configured on a chip claim 1 ...

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Номер записи: 68
09-01-2020 дата публикации

METHOD OF INSPECTING STRUCTURE AND INSPECTION SYSTEM

Номер: US20200011839A1
Автор: Jang Jinho, Liu Peipei, Sohn Hoon
Принадлежит: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

In a method of inspecting a structure, a first ultrasonic signal generated from a target structure by a first laser beam is received. The first ultrasonic signal is generated by providing the first laser beam generated from a first excitation unit to the target structure. A second ultrasonic signal generated from the target structure by a second laser beam different from the first laser beam is received. The second ultrasonic signal is generated by providing the second laser beam generated from a second excitation unit to the target structure. A third ultrasonic signal generated from the target structure by the first and second laser beams is received. The third ultrasonic signal is generated by simultaneously providing the first and second laser beams to the target structure. It is determined whether the target structure is damaged based on first, second and third ultrasonic frequency spectra that are obtained by converting the first, second and third ultrasonic signals, respectively. 1. A method of inspecting a structure , the method comprising:receiving a first ultrasonic signal generated from a target structure by a first laser beam, the first ultrasonic signal being generated by providing the first laser beam generated from a first excitation unit to the target structure;receiving a second ultrasonic signal generated from the target structure by a second laser beam, the second ultrasonic signal being generated by providing the second laser beam generated from a second excitation unit to the target structure, the second excitation unit and the second laser beam being different from the first excitation unit and the first laser beam, respectively;receiving a third ultrasonic signal generated from the target structure by the first laser beam and the second laser beam, the third ultrasonic signal being generated by simultaneously providing the first laser beam and the second laser beam to the target structure; anddetermining whether the target structure is damaged ...

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Номер записи: 69
09-01-2020 дата публикации

Systems and Methods for Damage Detection

Номер: US20200013160A1
Автор: Davies Christopher, Francis Kelly
Принадлежит: Belron International Limited

A system for detecting damage to a glass surface particularly vehicle glazing panels such as vehicle windscreens. The system uses a sensor unit disposed proximate the surface and a processor in communication with the sensor unit. The processor is configured to analyse data received from the sensor unit in order to determine the integrity of the surface and a communication unit is configured to output a signal in response to the processor determining that the surface has been damaged. For vehicle glass the system is preferably integrated into the vehicle management and control systems such that the system is active when the vehicle is active or moving. The management and or control system may monitor for instances or situations when changes, such as above threshold changes, occur in order to produce an output warning signal. 1. A system for detecting damage to a glass surface , the system comprising:a sensor unit disposed proximate the surface;a processor in communication with the sensor unit, wherein the processor is configured to analyze data received from the sensor unit to determine the integrity of the surface; anda communication unit configured to output a signal in response to the processor determining that the surface has been damaged.2. A damage detection system according to claim 1 , wherein the surface is a vehicle windscreen.3. A damage detection system according to claim 1 , wherein the sensor unit comprises a microphone and the processor comprises a sound amplification and signal processing system.4. A damage detection system according to claim 3 , wherein the processor is configured to identify a plurality of predetermined sound signals indicative of damage events.5. A damage detection system according to claim 1 , wherein the sensor unit comprises a camera arranged to image the surface and the processor comprises image processing software operable to analyze images received from the camera to identify any damage areas.6. A damage detection system ...

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Номер записи: 70
03-02-2022 дата публикации

STRUCTURE EVALUATION SYSTEM AND STRUCTURE EVALUATION METHOD

Номер: US20220034749A1
Автор: HASHIMOTO Katsufumi, SHIOTANI Tomoki, TAKAMINE Hidefumi, Watabe Kazuo
Принадлежит:

According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator. 1. A structure evaluation system comprising:a plurality of sensors which detect elastic waves;a position locator which locates positions of elastic wave sources on the basis of the plurality of elastic waves respectively detected by the plurality of sensors;a density distribution generator which generates an elastic wave source density distribution representing a distribution of densities of the elastic wave sources on the basis of results of the position locating of the elastic wave sources which is performed by the position locator;a corrector which corrects an elastic wave source density distribution serving as a comparison target which is obtained in advance by a sound structure by using a correction magnification for correcting the elastic wave source density distribution serving as a comparison target, in accordance with positions of the plurality of disposed sensors; andan evaluator which evaluates a deteriorated state of the structure on the basis of the elastic wave source density distribution generated by the density distribution generator and the elastic wave source density distribution serving as a comparison target which is corrected by the corrector.2. The structure evaluation system according to claim 1 , further ...

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Номер записи: 71
03-02-2022 дата публикации

Apparatus and method for determining when to replace a seal component of a seal assembly

Номер: US20220034849A1
Автор: Klaus Meck, Mohamad Shadi Nashed
Принадлежит: John Crane UK Ltd

A computer implemented method of determining when to replace a seal component of a seal assembly includes obtaining an indication of an accumulation of acoustic emission energy emitted from the seal component over a period of time and determining an estimate of remaining lifetime of the seal component based on the indication.

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Номер записи: 72
17-01-2019 дата публикации

METHOD AND APPARATUS FOR NON-AUDIBLE SENSING OF A DEFIBRILLATOR STATUS INDICATOR

Номер: US20190015672A1
Автор: HALSNE ERIC GRANT
Принадлежит:

A monitoring device for monitoring the readiness state of an automated external defibrillator (AED) and communicating the state to a remote receiver is described. An associated method is described as well. The monitoring device captures a non-acoustic parameter related to the activation of the AED readiness state beeper. 1. A monitoring device for sensing an operating status of a defibrillator having an audible annunciator with a diaphragm , comprising:a sensor disposed adjacent the annunciator and operable to detect a non-audible parameter related to a diaphragm motion of the annunciator diaphragm;a hardware processor in electrical communication with the sensor; andan output in communication with the hardware processor for providing a signal indicative of the diaphragm motion.2. The monitoring device of claim 1 , wherein the sensor comprises a capacitive sensor.3. The monitoring device of claim 2 , further comprising an electrically conductive decal adhered to the defibrillator on a defibrillator surface adjacent the annunciator claim 2 , wherein the sensor is disposed to detect an annunciator-induced vibration of the defibrillator surface.4. The monitoring device of claim 1 , wherein the sensor comprises a temperature sensor claim 1 , and wherein the parameter is a temperature change induced by the motion of the diaphragm.5. The monitoring device of claim 1 , wherein the sensor comprises an optical sensor claim 1 , wherein the optical sensor is disposed to detect a change in reflectance of the diaphragm during the diaphragm motion.6. The monitoring device of claim 1 , wherein the sensor comprises an optical sensor and further comprising an optically reflective decal adhered to the defibrillator on a defibrillator surface adjacent the annunciator claim 1 , wherein the optical sensor is disposed to detect an annunciator-induced vibration of the defibrillator surface.7. The monitoring device of claim 1 , wherein the sensor comprises an accelerometer that is arranged ...

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Номер записи: 73
17-01-2019 дата публикации

METHOD FOR CHECKING A COMPONENT TO BE PRODUCED IN AN ADDITIVE MANNER, AND DEVICE

Номер: US20190015901A1
Автор: Haberland Christoph, Jungbluth Matthias, Kreutzer Andreas, Lammers Heiko, Lorenz Thomas, Regener Martin, SPERLICH KATHRIN, Tomuschat Danny
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A method for checking a component to be produced in an additive manner, having the steps of mechanically exciting at least one additively constructed layer of the component during the additive production of the component, measuring a mechanical response signal of the component, and displaying a warning and/or interrupting the additive production of the component if the mechanical response signal lies outside of a specified tolerance range. A device for the additive production of a component, includes a device for mechanically exciting the at least one additively constructed layer of the component, a measuring unit for measuring the mechanical response signal of the component, and a control unit. The control unit is designed to display the warning and/or interrupt the additive production if the mechanical response signal lies outside of a specified tolerance range. 114.-. (canceled)15. A method for testing a component to be additively produced , comprising:mechanically exciting at least one additively constructed layer of the component together with a component substrate during an additive production of the component on the component substrate,measuring a mechanical response signal of the component wherein a characteristic frequency spectrum of the component is used for the mechanical excitation and the measurement of the mechanical response signal, anddisplaying a warning and/or carrying out a termination of the additive production of the component if the mechanical response signal lies outside a predetermined tolerance range,wherein the mechanical response signal is compared to a simulated or computed value for the display of the warning and/or the carrying out of the termination, andwherein the mechanical response signal is compared to a mechanical response signal of at least one previously additively constructed layer for the display of the warning and/or the carrying out of the termination.16. The method as claimed in claim 15 ,wherein the mechanical excitation ...

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Номер записи: 74
19-01-2017 дата публикации

ACTUATOR BRACKET HAVING A SENSOR

Номер: US20170016749A1
Автор: Good Benjamin Uriah, Jelken Shannon Eugene, Rachuy Mark Allen
Принадлежит:

Actuator bracket having a sensor is disclosed. An example apparatus includes a bracket having a first side and a second side opposite the first side. The first side is to couple to a first surface of an actuator. The second side is to couple to a controller. The apparatus also includes a first sensor coupled to the first side of the bracket. When the bracket is coupled to the first surface of the actuator, the first sensor is adjacent the first surface to measure a characteristic of the first surface of the actuator. 1. An apparatus comprising:a bracket having a first side and a second side opposite the first side, the first side to couple to a first surface of an actuator, the second side to couple to a controller; anda first sensor coupled to the first side of the bracket, wherein, when the bracket is coupled to the first surface of the actuator, the first sensor is adjacent the first surface to measure a characteristic of the first surface of the actuator.2. The apparatus of claim 1 , wherein the characteristic of the first surface of the actuator indicates a characteristic of at least one of a coupling of the bracket and the actuator claim 1 , a coupling of a controller and the bracket claim 1 , a yoke of the actuator claim 1 , a yoke lock nut claim 1 , and tubing between the controller and the actuator.3. The apparatus of claim 1 , wherein the first side of the bracket defines ribs to increase a rigidity of the bracket.4. The apparatus of claim 3 , wherein the first sensor is coupled to the bracket between at least two of the ribs and is recessed from an outer edge of the ribs to enclose the first sensor by the at least two of the ribs claim 3 , the first side of the bracket claim 3 , and the first surface of the actuator.5. The apparatus of claim 3 , wherein an outer edge of at least one of the ribs defines a groove to fixedly receive a wire coupled to the first sensor via potting claim 3 , the groove to prevent the wire from being damaged when the bracket is ...

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Номер записи: 75
19-01-2017 дата публикации

SYSTEM AND METHOD FOR PROVIDING SIMULATED ULTRASOUND POROSITY WAVEFORMS

Номер: US20170016861A1
Автор: Bossi Richard H., Georgeson Gary E., Tat Hong H.
Принадлежит:

A system and method is disclosed for generating ultrasound results having a simulated level of porosity for a composite. Data for a set of composite coupons having different levels of porosity is obtained. An attenuation distribution function is fit to a back wall signal generated from the data for each coupon and a library of echo patterns based on such data is created. An interpolated attenuation distribution function is calculated based on an interpolation of two stored attenuation distribution functions having the closest porosity values to the selected level. A main attenuation distribution function value is assigned to one portion of a selected region in a zero porosity coupon and attenuation distribution functions values within a predetermined percentage of the main attenuation distribution function are assigned to other portions of the region. Waveforms associated with the portions are modified based on such values and selected echo patterns from the library. 1. A method for generating simulated ultrasound test results having a selected level of porosity for a particular material under test , comprising the steps of:selecting a region of ultrasound test results for a coupon among a set of coupons of a selected material, the selected region within a region of porosity below a predetermined minimum threshold, the selected region for adding a predetermined amount of simulated porosity, the region of the ultrasound test results comprising a plurality of ultrasound waveforms;calculating a main attenuation distribution function based on an interpolation of two of a set of stored attenuation distribution functions for the set of coupons, one of the two stored attenuation distribution functions for a coupon in the set of coupons having a porosity less than the predetermined amount of simulated porosity and the other of the two stored attenuation distribution functions for a coupon in the set of coupons having a porosity greater than predetermined amount of simulated ...

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Номер записи: 76
18-01-2018 дата публикации

METHOD AND APPARATUS FOR ANALYZING A MATERIAL FLOW

Номер: US20180017420A1
Автор: BALTES Ralph, BOOS Franz Domenic, KNAPP Henning, NEUBERT Kilian, NIENHAUS Karl, VRAETZ Tobias, Wotruba Hermann
Принадлежит:

A method and an arrangement for analysis of a material flow (S) is disclosed having one or more material components. The material flow (S) is conducted via a conveyor line. One or more acoustic sensors are allocated to the conveyor line. Acoustic signals produced by the material flow (S) are detected by the acoustic sensors and then converted into digital signals. The digital signals are analyzed in an evaluating unit in a computer-assisted manner and analyzed by means of an algorithm in comparison to reference values specified based on individual identifying characteristics of the material components, such that the material components are identified and the mass fraction of at least one material component in the material flow (S) is determined. 19-. (canceled)10. A method for analyzing a material flow , comprising:guiding the material flow over a conveyor section;wherein the conveyor section comprises a plurality of sound sensors, wherein the sound sensors are arranged on a contact element of the conveyor section or one of the contact elements integrated into the conveyor section;detecting the acoustic signals generated by the material flow through the plurality of the sound sensors;converting the acoustic signals into digital signals;providing an evaluation unit;comparing the digital signals using the evaluation unit to the reference values determined by individual recognition features of the material components;comparatively assessing the digital signals;identifying the material components; and,determining a mass fraction of at least one material component in the material flow.11. The method of claim 10 , further comprising detecting the acoustic signals and evaluating in the form of acoustic emission and/or structure-borne sound and/or airborne sound and/or liquid-borne sound.12. The method of claim 11 , further comprising calculating and evaluation one or more of the following parameters:Arithmetic meanMedianVarianceStandard deviationEffective value/RMS value ( ...

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Номер записи: 77
18-01-2018 дата публикации

METHOD AND ARRANGEMENT FOR ACOUSTICALLY TESTING THE MECHANICAL INTEGRITY OF A CARTRIDGE

Номер: US20180017531A1
Автор: Boker Anne, Fischer Michael, Groeschke Jasmin, Hemberger Jurgen, Juhnke Hanno, Scharf Matthias, Schrack Michael, Spengler Jan-Peter, Zeckai Olaf
Принадлежит:

The present invention relates to a method of testing the mechanical integrity of a cartridge () containing a medicament and being arranged inside a drug delivery device (). The invention also relates to a testing arrangement and to a respective drug delivery device, wherein the method comprises the steps of: acoustically stimulating the cartridge (), measuring of the cartridge's () acoustic response () to the acoustic stimulation (), comparing the acoustic response () with a standard response () of an intact cartridge (), and determining the mechanical integrity of the cartridge () on the basis of the comparison. 1. A method of testing mechanical integrity of a cartridge containing a medicament and being arranged inside a drug delivery device , the method comprising:acoustically stimulating the cartridge,measuring an acoustic response of the cartridge to the acoustic stimulation,comparing the acoustic response with a standard response of an intact cartridge, anddetermining the mechanical integrity of the cartridge on the basis of the comparison.2. The method according to claim 1 , wherein acoustically stimulating the cartridge includes bringing a probe configured to emit acoustic signals in direct contact with the cartridge for directly acoustically stimulating the cartridge.3. The method according to claim 1 , wherein acoustically stimulating the cartridge comprises indirectly acoustically stimulating the cartridge by coupling a probe configured to emit acoustic signals to a device component of the drug delivery device claim 1 , wherein the device component is in direct mechanical contact with the cartridge.4. The method according to claim 1 , wherein acoustically stimulating the cartridge comprises indirectly acoustically stimulating the cartridge by coupling a probe configured to emit acoustic signals to a drug delivery device's housing claim 1 , which is acoustically coupled to a device component of the drug delivery device which is in direct mechanical contact ...

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Номер записи: 78
17-01-2019 дата публикации

Integration of Digital Image Correlation with Acoustic Emission

Номер: US20190017968A1
Автор: Bartoli Ivan, Kontsos Antonios, Vanniamparambil Prashanth Abraham
Принадлежит:

An inventive approach is disclosed to integrate Digital Image Correlation (DIC) with the Acoustic Emission method that may be used for structural health monitoring and assessment of critical structural components in civil, mechanical, and aerospace industries. The inventive approach relies on passively recording acoustic emission across the specimen being tested and activating the DIC cameras automatically to measure deformation on the specimen's surface. The resulting acousto-optic system can be used to determine damage initiation, progressive damage development, identify critical regions and make lifetime predictions of the tested specimen. 1. A nondestructive method of determining the structural integrity of a specimen as a load is applied to the specimen , the method comprising the steps of:attaching at least one acoustic sensor to the specimen;applying a contrasting pattern on the surface of the specimen;calibrating a pair of stereoscopic cameras at the contrasting pattern;passively recording acoustic stress waves propagating in the specimen in an Acoustic Emission (AE) system electronically coupled to the at least one acoustic sensor;triggering operation of the cameras by the AE system;measuring deformation in the specimen based on load-induced movement of the contrasting pattern in a Digital Image Correlation (DIC) system, the DIC system being electronically coupled to the cameras; andcorrelating acoustic stress waves and strain data to determine the structural health of the specimen.2. The method according to claim 1 , further comprising claim 1 , after calibrating the cameras at the contrasting pattern claim 1 , applying a load to the specimen.3. The method according to claim 2 , wherein the load applying step comprises attaching the specimen to a load applying test stand.4. The method according to claim 3 , wherein the at least one acoustic sensor and the cameras are electrically connected to the test stand.5. The method according to claim 4 , wherein a ...

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Номер записи: 79
17-01-2019 дата публикации

ACOUSTIC INSPECTION APPARATUS, AUDIO SIGNAL ACQUISITION APPARATUS, ACOUSTIC INSPECTION SYSTEM, AND ACOUSTIC INSPECTION METHOD

Номер: US20190017973A1
Автор: Enamito Akihiko, Nishimura Osamu
Принадлежит: KABUSHIKI KAISHA TOSHIBA

An acoustic inspection apparatus includes an acoustic-intensity calculating unit, a noise calculating unit, a noise removing unit and an inspecting unit. The acoustic-intensity calculating unit calculates an acoustic intensity, in which an acoustic intensity caused by hammering on an inspection target at a hammering position is canceled out, based on audio signals acquired by microphones in a symmetrical arrangement of at least one pair of microphone positions with respect to the hammering position or in a symmetrical arrangement of two hammering positions with respect to a pair of microphone positions. The noise calculating unit calculates a noise component from the calculated acoustic intensity. The noise removing unit removes the noise component from a physical quantity based on at least one of audio signals acquired at the at least one pair of microphone positions. The inspecting unit performs inspection on the hammering position based on the physical quantity. 1. An acoustic inspection apparatus comprising:an acoustic-intensity calculating unit that calculates an acoustic intensity, in which an acoustic intensity caused by hammering on an inspection target at a hammering position is canceled out, based on audio signals acquired by microphones in an arrangement in which at least one pair of microphone positions are symmetrical with each other with respect to the hammering position or in an arrangement in which two hammering positions are symmetrical with each other with respect to a pair of microphone positions;a noise calculating unit that calculates a noise component from the acoustic intensity calculated by the acoustic-intensity calculating unit;a noise removing unit that removes the noise component from a physical quantity based on at least one of audio signals acquired at the at least one pair of microphone positions; andan inspecting unit that performs inspection on the hammering position based on a physical quantity from which the noise component has ...

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Номер записи: 80
22-01-2015 дата публикации

Determination assist system of ultrasonic testing, determination assist method of ultrasonic testing, determination assist program of ultrasonic testing, and computer-readable storage medium for storing determination assist program of ultrasonic testing

Номер: US20150020594A1
Автор: Hideyuki Hirasawa, Hironori Okauchi, Katsumi Nagata, Kenji Tsubaki, Toshihiro Yamaoka
Принадлежит: Kawasaki Jukogyo KK

A determination assist system including a first image generating section for generating a first planar image based on data of a first test index; a second image generating section for generating a second planar image based on data of a second test index; a differentiation section which differentiates the first planar image and the second planar image to generate a first differential image and a second differential image, respectively; a binarization section which binarizes the first differential image to generate a first binary image including a first region which is not less than a first threshold and a second region, which is less than the first threshold, and binarizes the second differential image to generate a second binary image including a third region which is not less than a second threshold and a fourth region which is less than the second threshold; and a determination image generating section.

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Номер записи: 81
16-01-2020 дата публикации

CONTROL METHOD, INSPECTION SYSTEM, AND STORAGE MEDIUM

Номер: US20200018727A1
Автор: Matsumura Atsushi, Ono Toshiyuki
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a control method includes setting a transmission angle of an ultrasonic wave to a standard angle. The control method further includes transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object. The control method further includes calculating a tilt angle based on a gradient of the intensity. The tilt angle indicates a tilt of the object. The control method further includes resetting the transmission angle based on the tilt angle. 1. A control method , comprising:setting a transmission angle of an ultrasonic wave to a standard angle;transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object;calculating a tilt angle based on a gradient of the intensity, the tilt angle indicating a tilt of the object; andresetting the transmission angle based on the tilt angle.2. The method according to claim 1 , wherein the transmitting claim 1 , the detecting claim 1 , and the calculating are performed again after the resetting.3. The method according to claim 1 , whereina first loop of repeating the detecting, the calculating, and the resetting is performed after the resetting,the first loop includes determining whether or not the first loop has ended, andthe first loop is performed until the determining determines that the first loop has ended.4. The method according to claim 3 , wherein the determining determines that the first loop has ended when a number of repetitions of the detecting or the calculating reaches a prescribed number of times or more.5. The method according to claim 3 , whereina difference between a second tilt angle and a first tilt angle is calculated when a plurality of the tilt angles is calculated by the first loop, the plurality of tilt angles including the first tilt angle and the second tilt angle, the second tilt angle being calculated after the first tilt angle, andthe determining determines that ...

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Номер записи: 82
16-01-2020 дата публикации

ADHESIVE BOND TEST RESONANCE ARRAY

Номер: US20200018728A1
Автор: Amos Jay M., Kodumuru Bharath Kumar
Принадлежит:

An adhesive bond test resonance array provides inspection of adhesively bonded composite laminate structures with improved productivity and higher reliability. A holder has multiple slots arranged in a two-dimensional array for holding transducers in respective slots. The holder is adapted to position a probe end of each of the transducers adjacent a component for scanning and has a material hardness adapted for enabling flexing while scanning curved composite parts. A fluid channel is adapted for delivering a couplant to the probe end of the transducers such that the couplant is automatically delivered during scanning of the component to inspect bond integrity. 1. An adhesive bond test resonance array , comprising:a holder having a plurality of slots arranged in a two-dimensional array;a plurality of transducers each disposed in the plurality of slots, respectively, the holder being adapted to position a probe end of each of the plurality of transducers adjacent a component for scanning; anda fluid channel adapted for delivering a couplant to the probe end of the plurality of transducers such that the couplant is automatically delivered during scanning of the component.2. The adhesive bond test resonance array of claim 1 , wherein the two-dimensional array comprises an irregular pattern to reduce an overall footprint of the array claim 1 , the irregular pattern being compact for scanning close to component edges and irregular geometrical features.3. The adhesive bond test resonance array of claim 1 , wherein the holder is adapted to provide enough rigidity for supporting closely spaced transducers claim 1 , while also being adapted to provide enough flexibility for flexing with contours of curved components.4. The adhesive bond test resonance array of claim 1 , the holder comprising:a receiving side adapted for receiving the plurality of transducers into the respective plurality of slots;an interface side, opposite the receiving side, adapted for interfacing with a ...

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Номер записи: 83
16-01-2020 дата публикации

Detection system, detection device, and detection method

Номер: US20200018729A1
Автор: Kazuo Watabe, Takahiro Omori, Tomoya FUMIKURA
Принадлежит: Toshiba Corp

According to one embodiment, a detection system of an embodiment includes a sensor configured to detect elastic waves and a determiner. The determiner determines a region where an elastic wave generation source is positioned on the basis of waveform information if the waveform information including a plurality of peak groups related to one elastic wave is included in a detection result of the sensor.

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Номер записи: 84
16-01-2020 дата публикации

SOUND MEASUREMENT SYSTEM FOR A MOTOR VEHICLE

Номер: US20200018730A1
Автор: Auguet Thierry, GRANDJEAN SYLVAIN, Linda Jean-Louis
Принадлежит:

A sound measurement system intended to be installed on a motor vehicle, the system comprising: a microphone, an element for supporting the microphone, mechanical means for protecting the microphone against various projections (water, dust, etc.) from the environment of the vehicle, and mechanical means for protecting the microphone from airborne noise originating from the routing of the sound wave between the source and the measurement (cavity noise) and from the environment of the measuring system (turbulence around the measuring device), the various mechanical protection means being separate or combined. A motor vehicle may be provided with such a system. 19.-. (canceled)10. A sound measurement system intended to be installed on a motor vehicle , the system comprising:a microphone;an element for supporting the microphone;mechanical means for protecting the microphone against projections from an environment of the vehicle; andmechanical means for protecting the microphone from airborne noise originating from routing of a sound wave between a source and the measurement system, and for protecting the microphone from the environment of the measurement system,wherein the mechanical means are separate or combined.11. The sound measurement system according to claim 10 , wherein the element for supporting the microphone comprises a polygonal seat circumscribed by a cone.12. The sound measurement system according to claim 10 , wherein the mechanical means comprise a protective cover comprising:a deflector installed between the microphone and the noise source; andcolumns parallel to the microphone installed on respective opposite sides thereof.13. The sound measurement system according to claim 10 , wherein the mechanical means comprise lateral lugs installed on the element.14. The sound measurement system according to further comprising mechanical means for protecting the microphone against noise transmitted by conduction in a solid and originating from the motor vehicle ...

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Номер записи: 85
21-01-2021 дата публикации

METHOD OF DETECTING CRACK PROPAGATION IN WALL OF A METALLURGICAL FURNACE AND A DETECTION UNIT

Номер: US20210018469A1
Автор: Chandra Sanjay, Indimath Shivanandan S., Kundu Subhashis, Mani Kokila, Padmapal , Rajendran Shunmuga Sundaram, Singh Uttam, Sriniwasagan Balamurugan, Tiwari Mayank
Принадлежит: Tata Steel Limited

The present disclosure relates to a method of detecting crack propagation in a wall of a metallurgical furnace by a detection unit. The detection unit is configured to extract one or more dominant frequency parameters from the corresponding reflected stress signal, and analysing, a phase from each dominant frequency parameters. The analysing of the phase comprises determines, one or more coefficients for each dominant frequency parameters. The detection unit then identifies, a dominant phase based on the corresponding one or more coefficients and selects a frequency relevant to a thickness parameter based on the dominant phase. The crack propagation in the wall of the metallurgical furnace is then detected based on the frequency relevant to the thickness parameter at each of the one or more locations. The present disclosure provides an accurate method for determining condition of refractory lining by elimination unwanted noise signals. 1. A method of detecting crack propagation in a wall of a metallurgical furnace by a detection unit , comprising:transmitting, by a signal generating unit of the detection unit, a stress signal into the wall, at one or more locations on the wall of the metallurgical furnace;receiving, by the detection unit, a reflected stress signal from each of the one or more locations based on the corresponding stress signal;{'sub': 'd', 'extracting, by the detection unit, one or more dominant frequency parameter (f) from the corresponding reflected stress signal, from each of the one or more locations; and'}{'sub': 'd', 'claim-text': [{'sub': 'd', 'determining, by the detection unit, one or more coefficients (Y) for each of the one or more dominant frequency parameters (f) based on the reflected stress signal and a reference signal;'}, {'sub': d', 'd, 'identifying, by the detection unit, a dominant phase (Ø) for each of the one or more dominant frequency parameters (f) based on the corresponding one or more coefficients (Y),'}, {'sub': t', 'd', 'd ...

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Номер записи: 86
25-01-2018 дата публикации

Spindle device for a program-controlled machine tool

Номер: US20180021908A1
Автор: Hans Veittinger
Принадлежит: DECKEL MAHO PFRONTEN GMBH

A machining unit for a program-controlled machine tool. In particular, a spindle device for a program-controlled machine tool including a spindle housing; a working spindle which is mounted in the spindle housing in a rotatable manner about a spindle axis and which includes a clamping device for clamping a tool interface that is inserted in a tool receiving section of the spindle device and is configured to hold a milling or boring tool; and a sensor device which is arranged on the spindle housing and which includes at least one structure-borne sound sensor configured to detect structure-borne sounds or vibrations occurring during grinding operations.

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Номер записи: 87
17-04-2014 дата публикации

METHOD FOR THE DYNAMIC QUANTITATIVE CHARACTERIZATION OF THE AGEING OF SOLID MATERIALS

Номер: US20140107945A1
Автор: Gregori Giovanni
Принадлежит:

A method, starting from acoustic emission signals of a material under examination, for determining parameters dynamically characterizing an ageing state of a material is described. The method focuses on solid material properties that are widely sub-microscopic and as such are non-observable by any other known experimental method. 1. A method for a quantitative dynamic characterization of an ageing of a material , to which at least one acoustic transducer is applied , which is dedicated to a corresponding pre-defined acoustic oscillation frequency ν to provide an acoustic emission signal AE emitted by the material in a pre-defined time interval , the AE emission signal provided by each acoustic transducer being composed by a discrete series of rms values f(t) of electrical potential values as measured at subsequent time points twith j=0 , 1 , 2 , . . . , which are spaced apart by a time interval Δt that is pre-determined as a function of the material and the wished speed of analysis of the same material , the method comprising execution of the following analysis steps of the AE acoustic emission signals:{'sub': 'j', 'claim-text': a process of elementary material collapsing or leak domain,', 'a time sequence of the outliers denoting a time evolution of the leak domains associated to frequency ν, and', 'a state change occurring in the material;, 'A. finding outliers of said AE emission signal for each frequency ν, each outlier indicating a tail in a statistical distribution of the values f(t) and therefore indicating{'sub': 'j', 'B. starting from said discrete series of values f(t), removing from said values the outliers as found in step A, and constructing a hammer diagram;'}{'sub': h', 'h, 'C. calculating a function of a hammer index H(t) at time instants t=1, 2, 3, . . . , from the hammer diagram in step B, wherein the hammer index only assumes either value +1, representing an average anti-clockwise curvature in a trajectory described by the hammer diagram and ...

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Номер записи: 88
26-01-2017 дата публикации

NON-CONTACT DURABILITY DIAGNOSIS APPARATUS AND METHOD

Номер: US20170023530A1
Автор: Lim Cheol Woo, Park Byeong-Jin, Park Jae Roung, Sohn Hoon, Song Byeongju
Принадлежит:

A non-contact durability diagnosis apparatus includes: (a) applying non-contactly and sequentially at least two excitation ultrasonic waves to an object and storing frequency signals generated from the object; (b) applying non-contactly and simultaneously the at least two excitation ultrasonic waves to the object and storing frequency signals generated from the object; (c) storing derived frequency signals remaining after removing an overlapping portion of the frequency signals of step (a) and the frequency signals of step (b); and (d) determining that the object is damaged when at least one of the generated frequency signals of step (c) is larger than a predetermined value. 1. A non-contact durability diagnosis method comprising:(a) applying non-contactly and sequentially at least two excitation ultrasonic waves to an object and storing frequency signals generated from the object;(b) applying non-contactly and simultaneously the at least two excitation ultrasonic waves to the object and storing frequency signals generated from the object;(c) storing derived frequency signals remaining after removing an overlapping portion of the frequency signals of step (a) and the frequency signals of step (b); and(d) determining that the object is damaged when at least one of the generated frequency signals of step (c) is larger than a predetermined value.2. The non-contact durability diagnosis method of claim 1 , wherein: (a-1) applying sequentially a first excitation ultrasonic wave and a second excitation ultrasonic wave having a frequency different than a frequency of the first excitation ultrasonic wave; and', '(a-2) measuring and storing a first frequency signal generated from the object by the first excitation ultrasonic wave and a second frequency signal generated from the object by the second excitation ultrasonic wave., 'step (a) further comprises3. The non-contact durability diagnosis method of claim 2 , wherein: (b-1) applying non-contactly and simultaneously the ...

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Номер записи: 89
25-01-2018 дата публикации

METHOD AND SYSTEM FOR JOINT INSPECTION

Номер: US20180024098A1
Автор: Phillips Paul
Принадлежит:

A method of inspecting a joint of a heat exchanger comprises: scanning the heat exchanger with an electromagnetic acoustic transducer (EMAT) sensor by scanning the EMAT sensor over an area of the heat exchanger in a scanning pattern; collecting data from the EMAT sensor analysing the data; and determining a status of the joint based on the analysed data. 1. A method of inspecting a joint of a heat exchanger , the method comprising:scanning the heat exchanger with an electromagnetic acoustic transducer (EMAT) sensor by scanning the EMAT sensor over an area of the heat exchanger in a scanning pattern;collecting data from the EMAT sensor;analysing the data; anddetermining a status of the joint based on the analysed data.2. The method as claimed in claim 1 , wherein the scanning pattern is two-dimensional.3. The method as claimed in claim 1 , wherein the scanning pattern is determined based on a computer model of the heat exchanger.4. The method as claimed in claim 3 , wherein the scanning pattern covers an area of the heat exchanger including the joint and omits an area of the heat exchanger without the joint.5. The method as claimed claim 1 , wherein collecting data from the EMAT sensor comprises collecting data from a plurality of locations within the scanning pattern.6. The method as claimed in claim 1 , wherein the collection of data from the EMAT sensor comprises recording the time of collection of the data.7. The method as claimed claim 1 , wherein analysing the data comprises using a wavelet transform.8. The method as claimed in claim 1 , wherein determining a status of the joint comprises determining a quality of the joint within the heat exchanger.9. The method as claimed in claim 1 , wherein analysing data comprises comparing the data to a database of known defects.10. The method as claimed in claim 9 , further comprising updating the database based on the analysed data and the determined status of the joint.11. The method as claimed in claim 1 , comprising ...

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Номер записи: 90
10-02-2022 дата публикации

METHOD FOR RECONSTRUCTING A THREE-DIMENSIONAL SURFACE USING AN ULTRASONIC MATRIX SENSOR

Номер: US20220042951A1
Автор: IAKOVLEVA Ekaterina, ROUE David
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

A method for reconstructing a three-dimensional surface of a part using an ultrasonic matrix sensor including scanning the three-dimensional surface using a matrix sensor at different measurement points located at the intersection of scanning rows and of increment rows at each measurement point, acquiring a temporal row image representing a reflected wave amplitude received by each element from a selected row of the matrix sensor and acquiring a temporal column image representing a reflected wave amplitude received by each element from a selected column of the matrix sensor, constructing a two-dimensional row image for each scanning row on the basis of the temporal row images constructing a two-dimensional column image for each increment row on the basis of the temporal column images, and constructing a three-dimensional image on the basis of the two dimensional row images and of the two-dimensional column images. 1. A method for reconstructing a three-dimensional surface of a part using a matrix sensor comprising a plurality of elements arranged in rows and columns , each element being arranged to be able to emit an incident wave in the direction of the part and to generate a signal representing a reflected wave received by said element , the method comprising:scanning the three-dimensional surface with the matrix sensor, the matrix sensor being moved in a plurality of measurement points, each measurement point being defined by the intersection of a scanning line, among a set of scanning lines parallel to the rows of elements of the matrix sensor, and an increment line, among a set of increment lines parallel to the columns of elements of the matrix sensor, acquiring a temporal row image comprising emitting an incident wave by one or more elements of a selected row of the matrix sensor and generating, for each of the elements of the selected row, a temporal signal representing an amplitude over time of a reflected wave received by said element, the temporal row ...

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Номер записи: 91
10-02-2022 дата публикации

STATE ESTIMATION DEVICE AND STATE ESTIMATION METHOD

Номер: US20220042952A1
Автор: KURIYAMA Toshiyuki
Принадлежит: Mitsubishi Electric Corporation

A state estimation device calculates a state transition table indicating a state transition assumed in an object every time a connection pattern between partial waveforms is changed, selects a connection pattern from the state transition table on the basis of entropy that is a statistical index of the state transition of the object, and estimates a state of the object at each time and a state transition of the object on the basis of the selected connection pattern. 1. A state estimation device comprising processing circuitryto perform division of a waveform of time-series data detected from an object into a plurality of partial waveforms by a first division number and a second division number lamer than the first division number,to extract a feature of each of the plurality of partial waveforms,to cluster the plurality of partial waveforms on a basis of the feature of each of the plurality of partial waveforms,to calculate a state transition table indicating a state transition assumed for the object every time a connection pattern between the plurality of partial waveforms divided by the second division number is changed, and to select the connection pattern from the state transition table on a basis of a statistical index of the state transition of the object, andto estimate a state of the object at each time and the state transition of the object on a basis of the connection pattern selected.2. The state estimation device according to claim 1 , wherein the state transition table is selected on a basis of entropy indicating variation in frequency of a state transition of the object.3. The state estimation device according to claim 1 , wherein the division of the waveform of time-series data is performed in accordance with a Ramer Douglas Peucker algorithm.4. A state estimation method performed by a state estimation device claim 1 , the method comprising:performing division of a waveform of time-series data detected from an object into a plurality of partial ...

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Номер записи: 92
24-04-2014 дата публикации

Methods for characterizing vibration of a rack structure

Номер: US20140109674A1
Автор: Aleksey M. Urmanov, Anton A. Bougaev, David K. McElfresh, Kenny C. Gross
Принадлежит: Oracle America Inc

A system for characterizing vibration of a rack structure having at least one hard disk drive disposed therein and a vibration exciter operatively associated with the rack structure includes one or more computers. The one or more computers are configured to command the vibration exciter to provide vibration input to the rack structure and to command a plurality of reads from the at least one hard disk drive such that, for each of the plurality of reads, data stored on the at least one hard disk drive is retrieved from the at least one hard disk drive. The one or more computers are also configured to obtain read rate information related to the plurality of reads and to identify at least one resonant frequency of the rack structure based on the read rate information.

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Номер записи: 93
24-01-2019 дата публикации

Combined Vibrational Spectroscopy and Laser Induced Breakdown Spectroscopy for Improved Mineralogical and Geochemical Characterization of Petroleum Source or Reservoir Rocks

Номер: US20190025198A1
Автор: Washburn Kathryn Elizabeth
Принадлежит: Halliburton Energy Services, Inc.

A method for determining mineralogical or geochemistry of at least one geological sample with vibrational spectroscopy combined with laser-induced breakdown spectral measurements performed on the geological sample in a time variant manner with spectral acquisitions made after each of a plurality of measurement shots, spectral pre-processing performed as necessary, and subsequent analysis is applied to the collected data to determine at least one mineralogical or geochemistry parameter of the sample. The method can provide a rapid method to estimate mineralogy or geochemical parameters of a sample, which does not require sample preparation, and which can be non-destructive with respect to portions of the sample. A system for performing the method also is provided. 1. A method for performing kinetic analysis as geochemical information of a sample of a petroleum source or reservoir rock , comprising:a) making a vibrational spectroscopy measurement on the sample of a petroleum source or reservoir rock;b) heating the sample, or a second sample of the petroleum source or reservoir rock that has a similar composition and structure; i) determining changes in amounts of elements associated with organic matter and hydrocarbons for a portion of the sample or the second sample that is heated by the laser-induced pyrolysis,', 'ii) collecting and analysing hydrocarbon species produced by pyrolysis of a portion of the sample from the laser-induced pyrolysis by a flame ion detector or gas chromatography-mass spectrometry (GC-MS),', 'iii) monitoring weight of the sample during the laser-induced pyrolysis of the sample,', 'iv) monitoring the temperature of the sample and determining the amount of energy inputted into the portion of the sample by the laser during the laser-induced pyrolysis, or using any combination of i), ii), iii), and iv)., 'c) determining a reaction rate, such as a value of the Arrhenius equation rate constant k, of the sample of the second sample comprising at ...

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Номер записи: 94
24-01-2019 дата публикации

FREEZE DETECTOR FOR A PIPE OF A CONTAINER

Номер: US20190025259A1
Автор: MAGNUSSON Fredrik
Принадлежит:

The present invention relates to a freeze detector () for a pipe or container () being adapted for holding and transporting water or water containing liquids, said freeze detector () comprising a microphone housing (), comprising a microphone (), adapted to be mounted on an outside surface () of said pipe or container (), and adapted to receive sound from within said pipe or container (), said sound forming an acoustic pattern, an attachment member () for attaching said microphone () to said pipe, and an processing unit() adapted to receive, process and analyze the acoustic pattern of the sound transmitted by the microphone and to be activated when at least one predetermined threshold value (T) is detected in the acoustic pattern received by said microphone (), wherein said threshold value (T) indicates local freezing of said water or water containing liquids inside said pipe or container (). 1. A freeze detector for a pipe or container being adapted for holding and transporting water or water containing liquids , which freeze detector is capable of detecting imminent freezing inside the pipe or container , said freeze detector comprisinga microphone housing, comprising a microphone, adapted to be mounted on an outside surface of said pipe or container, and adapted to receive sound from within said pipe, said sound forming an acoustic pattern indicating imminent freezing water,an attachment member for attaching said microphone to said pipe, and{'sub': freeze', 'freeze, 'an processing unit adapted to receive, process and analyze the acoustic pattern of the sound transmitted by the microphone and to be activated when at least one predetermined threshold value (T) is detected in the acoustic pattern received by said microphone, wherein said threshold value Tindicates imminent local freezing of said water or water containing liquids inside said pipe or container.'}2. The freeze detector according to claim 1 , wherein said microphone is a contact microphone adapted to ...

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Номер записи: 95
29-01-2015 дата публикации

Resonant transducer, manufacturing method therefor, and multi-layer structure for resonant transducer

Номер: US20150028434A1
Автор: Shigeto IWAI, Shuuji OKUDA, Takashi Yoshida
Принадлежит: Yokogawa Electric Corp

A resonant transducer includes a silicon single crystal substrate, a silicon single crystal resonator disposed over the silicon single crystal substrate, a shell made of silicon, surrounding the resonator with a gap, and forming a chamber together with the silicon single crystal substrate, an exciting module configured to excite the resonator, a vibration detecting module configured to detect vibration of the resonator, a first layer disposed over the chamber, the first layer having a through-hole, a second layer disposed over the first layer, a third layer covering the first layer and the second layer, and a projection extending from the second layer toward the resonator, the projection being spatially separated from the resonator, the projection being separated from the first layer by a first gap, the second layer being separated from the first layer by a second gap, the first gap is communicated with the second gap.

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Номер записи: 96
23-01-2020 дата публикации

An In-Line, Contactless and Non-Destructive Method and System for Detecting Defects in a Moving Cardboard Structure

Номер: US20200025720A1
Автор: "DANGLADE Pierre-Michel", ARDIN Cédric, BERRY Alain, Masson Patrice, Quaegebeur Nicolas
Принадлежит:

An in-line, contactless and non-destructive method for detecting and identifying defects in a moving cardboard structure is provided, as well as the associated system. The cardboard structure is of the type made of layered paper plies, such as cardboard tubes for example. The method includes the steps of emitting acoustic waves with predetermined frequencies toward the moving cardboard structure. The acoustic waves are converted into mechanical waves propagating through the moving cardboard structure. The method also includes a step of capturing the acoustic waves propagated, wherein said captured acoustic waves result from a conversion of the propagated mechanical waves through the moving cardboard structure. The method also provides steps of analyzing the captured acoustic waves; and detecting and identifying defects in the moving laminated cardboard structure based on predetermined propagation properties measured from the captured acoustic waves. 1. An in-line , contactless and non-destructive method for detecting and identifying defects in a moving laminated cardboard tube made of layers of spirally wound paper plies , the method comprising the steps of:emitting acoustic waves with predetermined frequencies in an airspace toward the moving laminated cardboard tube at a first location, the acoustic waves being converted into mechanical waves propagating through the moving laminated cardboard tube;capturing the acoustic waves propagated in the airspace at a second location, spaced away from the first location, wherein said captured acoustic waves result from a conversion of the propagated mechanical waves through the moving laminated cardboard tube;analyzing the captured acoustic waves; anddetecting and identifying defects in the moving laminated cardboard tube based on predetermined propagation properties measured from the captured acoustic waves.2. (canceled)3. The method according to claim 1 , wherein the moving laminated cardboard tube has a lengthwise axis ...

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Номер записи: 97
28-01-2021 дата публикации

METHOD FOR DETECTING THE SPLITTING OF A SUBSTRATE WEAKENED BY IMPLANTING ATOMIC SPECIES

Номер: US20210028036A1
Автор: Ben Mohamed Nadia, Kononchuk Oleg, Landru Didier, Mazen Frederic, Rieutord François
Принадлежит:

A method for monitoring a heat treatment applied to a substrate comprising a weakened zone formed by implanting atomic species for splitting the substrate along the weakened zone, the substrate being arranged in a heating chamber, the method comprising recording sound in the interior or in the vicinity of the heating chamber and detecting, in the recording, a sound emitted by the substrate during the splitting thereof along the weakened zone. A device for the heat treatment of a batch of substrates comprises an annealing furnace comprising a heating chamber intended to receive the batch, at least one microphone configured to record sounds in the interior or in the vicinity of the heating chamber, and a processing system configured to detect, in an audio recording produced by the microphone, a sound emitted when a substrate splits. 1. A method for monitoring a heat treatment applied to a substrate comprising a weakened zone formed by implanting atomic species for splitting the substrate along the weakened zone , the substrate being located in a heating chamber , the method comprising recording sound in the interior or in the vicinity of the heating chamber and detecting , in the recording , a sound emitted by the substrate during the splitting thereof along the weakened zone.2. The method of claim 1 , wherein the recording is made with a microphone located in the interior of the heating chamber.3. The method of claim 1 , wherein the recording is made with a microphone arranged on an exterior wall of an annealing furnace containing the heating chamber.4. The method of claim 1 , wherein the recording is made with a microphone located between a thermal screen and a door of an annealing furnace allowing access to the heating chamber.5. The method of claim 1 , wherein the recording is made with a microphone located in a tube that opens onto the interior of the heating chamber.6. The method of claim 1 , further comprising claim 1 , from the recording of the sound in the ...

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Номер записи: 98
17-02-2022 дата публикации

SYSTEM AND METHOD FOR MONITORING A SCREENING MACHINE

Номер: US20220048076A1
Автор: Trojosky Mathias
Принадлежит:

There is provided a system for monitoring a screening machine, comprising a vibration sensor configured to record a vibration response of a screen fabric of the screening machine; and a signal processing device for digitally processing and evaluating the vibration response. In this connection, the signal processing device comprises an adaptive algorithm which is based on the methods of artificial intelligence, is related to vibration responses of one or several comparative screen fabrics and is adapted to characterize the vibration response recorded by the vibration sensor. Furthermore, a method for monitoring a screening machine is presented. 2100. The system () according to claim 1 ,{'b': ['250', '250', '200', '200'], '#text': 'wherein the characterization of the recorded vibration response () is performed with the aid of error signatures which are characteristic for deviations of the recorded vibration responses () between a normal state of the screen fabric () and an error state of the screen fabric (),'}{'b': ['200', '200'], '#text': 'wherein the normal state characterizes the screen fabric () having no defect, and the error state characterizes the screen fabric () having a defect.'}3100200280. The system () according to claim 1 , wherein the comparative screen fabrics comprise screen fabrics which are different from the screen fabric () of the screening machine () to be monitored.4100250200220240. The system () according to claim 1 , wherein the adaptive algorithm is related to previous vibration responses () of the screen fabric () recorded by the vibration sensor ( claim 1 , ).5100210225200280. The system () according to which further comprises an excitation device () which is configured to impress a vibration () to the screen fabric () of the screening machine ().6100210200280. The system () according to claim 5 , wherein the excitation device () is configured to impress a broadband vibration spectrum to the screen fabric () of the screening machine (). ...

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Номер записи: 99
02-02-2017 дата публикации

Method for determining mechanical properties of a material

Номер: US20170030814A1
Автор: Yamid Pico
Принадлежит: Schlumberger Technology Corp

A tool having at least one vibration sensor and at least one standoff is disposed in a contact with a material and the at least one standoff of the tool is pushed into the material. Vibration is excited by the at least one vibration source and at least one coupling frequency of the tool is measured by the at least one vibration sensor. Based on the determined coupling frequency determining a contact stiffness of the at least one standoff and the mechanical properties of the material are determined taking into account mechanical properties of the at least one standoff.

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Номер записи: 100