REALIZATION Of a PREFORM BY REINFORCEMENT Of a FIBROUS STRUCTURE ET/OUPAR CONNECTION BETWEEN THEM OF FIBROUS STRUCTURES AND APPLICATION TO REALIZATION DEPIECES OUT OF COMPOSITE MATERIAL

MIXER FOR CONDUIT HAS SEPARATE FLOWS

Mélangeur pour tuyère à flux séparés de turboréacteur comprenant, suivant un axe longitudinal (X-X'), une virole de fixation (10) pour raccorder le mélangeur au carter d'échappement de la tuyère et une structure à lobes (20) comportant une succession de lobes internes (22) et externes (21) répartis de façon circonférentielle autour de l'axe longitudinal (X-X') du mélangeur. La structure à lobes (20) est réalisée en matériau composite à matrice céramique et comprend en outre un anneau raidisseur (30) qui forme une liaison entre les lobes internes de la structure. Ainsi, la majeure partie du mélangeur, à savoir la structure à lobes, est réalisée en un matériau composite à matrice céramique, ce qui permet de diminuer de façon significative la masse du mélangeur et, par conséquent, celle de la tuyère.

REALIZATION OF FIBROUS PREFORM AIGUILLETEE FOR MANUFACTURE OF COMPOSITE MATERIAL PART

Une préforme fibreuse, constitutive du renfort fibreux d'une pièce en matériau composite à fabriquer est réalisée par superposition de strates fibreuses et liaison des strates entre elles, et par densification de la préforme aiguilletée par introduction au sein de celle-ci d'un matériau constitutif de la matrice du matériau composite. Au cours du processus de réalisation de la préforme, on disperse sur la surface d'au moins certaines des strates une poudre comprenant au moins un constituant choisi parmi une résine solide en poudre et des charges solides en poudre. La poudre est dispersée sur la surface de la strate supérieure de la préforme en cours de réalisation, avant superposition et aiguilletage d'au moins une strate supplémentaire.

Method for the brazing of parts made from a composite material, incorporating a slug in the bond

A method of assembling together by brazing first and second parts made of composite material, each of the first and second parts having an assembly face for brazing with the assembly face of the other part, the method including making at least one perforation in the assembly face of the first part; interposing capillary elements between the assembly faces of the first and second parts made of composite material; placing the first and second parts facing each other while inserting a peg in each perforation of the first part; placing a brazing composition in contact with a portion of the capillary elements; and applying heat treatment to liquefy the brazing composition so as to cause the molten brazing composition to spread by capillarity between the assembly faces of the composite material parts.

Making a blank by reinforcing a fiber structure and/or bonding fiber structures together, and use in making composite material parts

Method for marking a gaming disk by pad printing and device for implementing same

PROCESS FOR MANUFACTURING A THERMOSTRUCTURAL COMPOSITE PART

The invention relates to a process for manufacturing a part made of a com posite comprising a fibrous reinforcement densified by a matrix, which proce ss comprises the steps of: production of a fibrous preform consolidated by i mpregnation (S4) of a fibrous texture comprising yarns by means of a liquid consolidation composition containing a precursor of a consolidating material and transformation (S7) by pyrolysis of the precursor made of consolidating material so as to obtain a consolidated preform of maintained shape; and de nsification (S8) of the consolidated fibrous preform by chemical vapour infi ltration, characterized in that it includes, before the impregnation (S4) of the fibrous texture with the liquid consolidation composition, a step (S2) of filling the porosity of the yarns of said texture by means of a filling c omposition.

METHOD OF MANUFACTURING A CMC FLOW MIXER LOBED STRUCTURE FOR A GAS TURBINE AEROENGINE

A method of fabricating a lobed structure for a gas turbine flow mixer having an annular upstream portion extended downstream by a portion forming a multilobed skirt, the method comprising: .cndot. making a fiber preform (100) out of refractory fibers and having a shape corresponding to the shape of the lobed structure to be fabricated, from a plurality of component elements of fiber texture that are assembled together and shaped by means of tooling of a shape corresponding to the shape of the lobed structure to be fabricated so as to obtain an assembled fiber preform having a first preform portion (111) corresponding to the annular portion of the lobed structure and a second preform portion (112) corresponding to the multilobed skirt of the lobed structure, the component elements of the fiber preform being assembled together at least in part along connection lines (121) extending substantially in the flow direction of the flow past the lobes of the multilobed skirt preform portion; and ...

PROCEDE DE FABRICATION D'UNE STRUCTURE ALVEOLAIRE DE FORME COURBEE EN MATERIAU COMPOSITE

Un procédé de fabrication d'une structure alvéolaire courbée comprend les étapes suivantes : - réalisation d'une structure fibreuse déployable (100) par tissage multicouche entre une pluralité de couches de fils de chaîne et une pluralité de couches de fils de trame, la structure fibreuse comportant des zones de déliaison s'étendant dans l'épaisseur de la structure fibreuse, les zones de déliaison étant espacées les unes des autres par des portions de liaison entre plusieurs couches de fils de trame, les portions de liaison étant décalées d'un ou plusieurs fils de trame dans une direction parallèle à celle des couches de fils de trame entre chaque série de plans d'armure, - imprégnation de la structure fibreuse (100) avec une résine précurseur d'un matériau déterminé, - déploiement de la structure fibreuse (100) sur un outillage de maintien (50) de manière à former dans la structure fibreuse une cellule ou alvéole au niveau de chaque zone de déliaison, l'outillage présentant en outre une ...

THERMOCHROMIC INK COMPOSITION

ABSTRACT A thermochromic ink composition includes, in a liquid medium, known as solvent, a dispersion of thermochromic microcapsules incorporating at least one leuco-dye and a thermoplastic binder selected from the group containing polyacrylic polyesters, polyurethanes and copolymers thereof. The composition is characterised in that the solvent is aprotic. A method for producing a card and such a card incorporating at least one thermochromic pattern produced with a = thermochromic ink composition are also described. CA 2910744 2020-05-05 ...

METHOD AND DEVICE FOR THE SECURE PROTECTION OF AN OFFICIAL DOCUMENT AND OFFICIAL DOCUMENT THUS PROTECTED

L'invention concerne un procédé de protection sécuritaire d'une portion de surface d'un document officiel portant des inscriptions, dans lequel : - on choisit une couche (17) de sécurité transparente comprenant au moins une image imprimée semi-transparente comprenant au moins un liant transparent et au moins un pigment thermochromique (14, 13, 12, 11), - ladite image imprimée semi-transparente fait apparaître dans un premier état non activé, à au moins une première température, au moins un motif visible semi-transparent de façon à permettre la visualisation des inscriptions à travers cette image, ledit motif n'étant pas visible dans un second activé, à au moins une deuxième température différente de la première température. L'invention concerne également un dispositif de protection sécuritaire d'une portion de surface d'un document officiel et un tel document officiel.

GAMBLING CHIP AND METHOD FOR MARKING SAME

Le jeton de jeu (30) comporte sur au moins une de ses faces (32) et sur le chanfrein périphérique (34) un décor graphique réalisé par tampographie à l'aide d'un tampon encreur (40) dont la tête (42) déformable est comprimée. Le décor obtenu par tampographie est recouvert d'un vernis protecteur. L'invention concerne également un procédé de marquage du décor d'un jeton de jeu par au moins une opération de tampographie à l'encre associé au dépôt d'au moins une couche de vernis.

METHOD FOR MARKING A GAMING DISK BY PAD PRINTING AND DEVICE FOR IMPLEMENTING SAME

La tranche (14) d'un jeton de jeu (10) à tranche droite est marquée d'un décor graphique réalisé par tampographie à l'aide d'un tampon encreur dont la tête (36) déformable est comprimée. Le tampon est encré à l'aide d'un cliché plan comportant une zone en couronne porteuse d'un décor-image défini par une représentation radialement déformée du décor graphique de la tranche (14) du jeton (10). Le jeton (10) est disposé sur un socle (30) et centré au début de l'opération de marquage par des coulisseaux de centrage (32) escamotables lors du marquage de la tranche du jeton (10).

Method for the fabrication of a bowl in a thermostructural composite material, notably for use in an installation for the production of monocrystalline silicon

A method for the fabrication of a bowl in a thermostructural composite material formed from a fibrous reinforcement densified with a matrix is characterised in that it consists of the following steps:- a) producing a filament winding of a preformer of the bowl presenting an axial passage (30) at the level of the bottom; b) densifying the preformer (28) of the bowl by vapour phase chemical infiltration; and c) stopping the passage with a plug (34). Prior to densification the preformer can be rigidified. A final step of vapour phase chemical infiltration can be carried out after the plugging phase.

TOKEN HAS ELECTRONIC CHIP AND MANUFACTORING PROCESS Of SUCH a TOKEN

Le jeton 10' présente un corps 12' en matière thermoplastique à faces parallèles 13' et 14' pourvu d'une cavité 15' recevant un dispositif d'identification 16' à puce électronique. La cavité 15' comporte une ouverture faciale 17' dans laquelle un bouchon 19' de matière plastique est inséré à l'état solide déformable, le bouchon étant ensuite soudé à la paroi de la cavité 15' par chauffage et pression combinés de façon à fermer la cavité et à intégrer complètement dispositif d'identification 16'. Le dispositif d'identification 16' est susceptible de communiquer « sans contact » par ondes radiofréquence avec un poste de lecture. Le jeton de jeu est susceptible d'être fabriqué selon l'un des deux procédés de fabrication adaptés l'un aux matériaux thermoplastiques, l'autre aux matériaux thermodurcissables.

Fabrication of a composite material component with a ceramic matrix and reinforcing fibres using an interphase coating, notably for aeronautical and spatial structural components subjected to hot gases

Un revêtement d'interphase est formé par infiltration chimique en phase vapeur (CVI) sur les fibres constitutives d'une préforme fibreuse, le revêtement d'interphase comportant au moins une couche interne de défragilisation du matériau composite, au contact des fibres, et une couche externe d'adhérence avec la matrice céramique. La préforme fibreuse est ensuite maintenue dans sa forme avec les fibres munies du revêtement d'interphase, et consolidée par imprégnation par une composition liquide contenant un précurseur de céramique, et transformation du précurseur en une phase consolidante de matrice céramique. La préforme consolidée est ensuite densifiée par une phase complémentaire de matrice céramique. Aucun outillage de maintien n'est nécessaire pour la formation du revêtement d'interphase par CVI ou pour la densification après consolidation par voie liquide.

Anfertigung einer genadelten Faservorform zur Herstellung eines Verbundmaterialteils

Verfahren zur Herstellung eines Verbundmaterialteils, das eine mit einer Matrix verdichtete Faserverstärkung aufweist, wobei das Verfahren aufweist: – Anfertigen einer die Faserverstärkung bildenden Faservorform durch übereinander Legen und miteinander Verbinden von Faserlagen, – Aufstäuben eines Pulvers auf die Oberfläche jeder neu hinzugefügten Lage während des Verfahrens der Herstellung der Vorform, wobei das Pulver mindestens ein festes Harz in Pulverform, das teilweise vernetzt ist, und hitzebeständige feste Füllstoffe aufweist, – Nadeln jeder neu hinzugefügten Lage auf den darunter liegenden Stapel von Lagen, – darüber Legen mindestens einer letzten Faserlage, – Erhalten einer verfestigten Vorform durch Beenden des Vernetzens des Harzes nach dem darüber Legen und Nadeln der letzten Lage, und danach – Verdichten der genadelten und verfestigten Vorform, indem ein Matrix bildendes Material in sie eingebracht wird.

System for mounting a motor-vehicle headlamp

The system for mounting a headlamp (100) for motor vehicles or the like or of accessories comprises a holder (200) which has at least one hook (203) or (204) which engages in the central part of a snap-in device which comprises two clips (21 and 22) which are attached to one of the flat parts (104) of the item to be mounted, whereas the entire item is held in place by means of a locking tongue (300) running transversely through this snap-in device. ...

ELEKTRONISCHE WERTMARKE UND VERFAHREN ZU IHRER HERSTELLUNG

TAMPONDRUCKVERFAHREN FOR A COUNTER AND A DEVICE FOR ITS EXECUTION

METHOD FOR PRODUCING A PART CONSISTING OF COMPOSITE MATERIAL BY SYNTHESIS BY MEANS OF A SELF-SUSTAINED REACTION AT A HIGH TEMPERATURE

L'invention concerne un procédé de fabrication d'une pièce en matériau composite à matrice céramique comportant l'étape suivante : a) fabrication de la pièce par formation d'une matrice céramique dans la porosité d'une structure fibreuse, la matrice céramique étant formée par synthèse par réaction auto-entretenue à haute température à partir d'une composition pulvérulente présente dans la porosité de la structure fibreuse.

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE CONTAINING MATRIX PHASES FOR HEALING AND DEFLECTING CRACKS

A method of fabricating a part of ceramic matrix composite material, the method comprises the steps of forming a porous fiber-reinforcing structure, introducing into the pores of the fiber structure powders containing elements for constituting the composite material matrix, forming at least a main fraction of the matrix from said powders by causing a reaction to take place between said powders; and the powders introduced into the fiber structure comprising elements that form at least one healing discontinuous matrix phase including a boron compound and at least one crack-deflecting discontinuous matrix phase including a compound of lamellar structure.

METHOD OF LOCALLY TREATING A PART MADE OF POROUS COMPOSITE MATERIAL

A method for locally treating a portion (130) of a part (100) made from composite material comprising a fibrous reinforcement densified by a matrix, said material having internal porosity. The method comprises the following steps: - defining a quantity of infiltration composition (10) on the basis of the volume of the portion (130) of the part to be treated (100), the infiltration composition (10) comprising at least silicon, - placing the defined quantity of infiltration composition (10) in contact with the portion (130) of the part to be treated, - heat treating at a temperature greater than or equal to the melting temperature of the infiltration composition in such a way as to impregnate said portion with the treatment composition.

Process for preparation of polynuclear iron compounds stabilized by carbohydrates and/or humic acids

The present invention relates to a process for the preparation of polynuclear iron compounds stabilized by or forming complexes with carbohydrates and/or humic acid using a pressure-driven filtration process.

METHOD FOR PROCESSING CERAMIC FIBRES

Procédé de traitement de fibres céramiques (10) à base de carbure métallique comprenant un premier traitement thermique en voie gazeuse réactive (S1) réalisé avec au moins un premier gaz réactif de type halogène formant, par transformation chimique de la fibre en surface, une couche superficielle (12) constituée majoritairement de carbone et un deuxième traitement thermique en voie gazeuse réactive (S2) réalisé avec au moins un deuxième gaz réactif éliminant la couche superficielle formée en surface lors de la transformation chimique.

PROCESS FOR MANUFACTURING A THERMOSTRUCTURAL COMPOSITE PART

The invention relates to a method of fabricating a composite material part comprising fiber reinforcement densified by a matrix, the method comprising the steps of: making a fiber preform consolidated by impregnating (S4) a fiber texture made up of yarns with a liquid consolidation composition containing a precursor for a consolidating material, and by transforming (S7) the precursor into consolidating material by pyrolysis so as to obtain a consolidated preform that is held in shape; and densifying (S8) the consolidated fiber preform by chemical vapor infiltration; the method being characterized in that it includes, prior to impregnation (S4) of the fiber texture with the consolidation liquid composition, a step of filling (S2) the pores of the yarns of said fiber texture by means of a filler composition.

COUNTER AND MARKING PROCEDURE

ELECTRONIC MONEY TOKEN AND PROCEDURE FOR YOUR PRODUCTION

PROCEDURE FOR THE PRODUCTION OF A WITH CMCFLUSSMI EQUIPPED STRUCTURE FOR A TURBINE AIR MOTOR

METHOD FOR PRODUCING A HOLLOW PART MADE OF A CERAMIC MATRIX COMPOSITE MATERIAL

The invention relates to a method for producing a hollow part made of a ceramic matrix composite material, comprising the steps of: - shaping a hollow fibrous preform, wherein a core made of an oxidisable material is housed in or inserted into the preform (E1); - consolidating said preform (E3, E4); and - extracting the core by oxidising said core (E5).

DOCUMENT COMPRISING AT LEAST TWO PHOTOLUMINESCENT IMAGES, SECURITY FILM AND PROTECTIVE SECURITY METHOD

L'invention concerne un document (15) comprenant : - au moins une première image (5) comprenant au moins un pigment photoluminescent invisible sous éclairage en lumière visible et visible sous éclairage par au moins une première source (20) de lumière non visible émettant dans le domaine des ultraviolets courts, caractérisé en ce qu'il comprend en outre : - au moins une deuxième image comprenant au moins un pigment photoluminescent invisible sous éclairage en lumière visible et visible sous éclairage par au moins une deuxième source de lumière non visible émettant dans le domaine des ultraviolets longs, - au moins une couche, dite couche filtrante, disposée en regard de ladite deuxième image et comprenant au moins un matériau, dit matériau filtrant, adapté pour permettre de filtrer les longueurs d'onde émises par ladite première source de lumière non visible, sans empêcher la visualisation de la première image sous éclairage par la première source de lumière.

LOW-THICKNESS THERMOSTRUCTURAL COMPOSITE MATERIAL PART, AND MANUFACTURE METHOD

The invention relates to a thermostructural composite material part including a fibrous reinforcement having fibers made of carbon or ceramic that is densified by an at least partially thin matrix a, wherein: the thickness of the part is less than 2 mm, or even less than 1 mm; the fibrous reinforcement is made of a single thickness of multilayer fabric made of spread-out threads having a count at least equal to 200 tex; the fiber volume percent is between 25% and 45%; and the ratio between the number of multilayer fabric layers and the thickness in mm of the part is at least equal to 4.

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE CONTAINING MATRIX PHASES FOR HEALING AND DEFLECTING CRACKS

Electrical contact terminal and terminal (connection) block comprising an application thereof

The terminal, made of cut-out and folded metal sheet, can be locked in parallel passages of an insulating body belonging to a terminal block; it comprises a rear shank (barrel) for fixing a conductor, and a front body having two side walls (flanks) in which are arranged, symmetrically with respect to a mid-plane of the terminal, two windows (26) for receiving elastic locking catches (50) belonging to the insulating body. To the rear of the side walls, the terminal has two shoulders (28, 30) directed towards the rear, these being symmetrical with respect to the mid-plane of the contact area and are intended to serve as a bearing to locking means passing through an insulating body receiving the terminal.

SPIELMARKE UND MARKIERUNGSVERFAHREN

VERFAHREN ZUR HERSTELLUNG EINER MIT EINEM CMC-FLUSSMISCHER AUSGESTATTETEN STRUKTUR FÜR EINEN TURBINEN-LUFTMOTOR

Silicon chip token and methods for making same

Gambling chip and method for marking same

METHOD FOR MANUFACTURING A MULTILAYER DATA MEDIUM WITH REFLECTING METALLISED INSCRIPTIONS

L'invention concerne un procédé de fabrication d'un support de données multicouche présentant des inscriptions (23) métallisées réfléchissantes visibles à partir d'au moins une face (11) externe. On imprime sur une couche (21) d'impression transparente un motif (24) de base choisi pour pouvoir recevoir lesdites inscriptions (23), être transparent, et présenter une tension de surface supérieure à 40 dynes/cm et un état de surface lisse de réflexion spéculaire supérieure à 50 % mesurée selon la norme ISO 2813 avec un angle de 60°, et aucune température de transition vitreuse dans la plage de température de lamination; puis on imprime lesdites inscriptions (23) au contact dudit motif (24) de base, puis on réalise la lamination à chaud et sous pression d'un empilement comprenant cette couche (21) d'impression.

PROCESS FOR FABRICATING COMPOSITE PARTS BY LOW MELTING POINT IMPREGNATION

L'invention concerne un procédé de fabrication de pièce en matériau composite, comprenant les étapes de : - réalisation d'une préforme fibreuse consolidée, les fibres de la préforme étant des fibres de carbone ou de céramique et étant revêtues d'une interphase, - obtention d'une préforme fibreuse consolidée et partiellement densifiée, la densification partielle comprenant la formation sur l'interphase d'une première phase de matrice obtenue par infiltration chimique en phase gazeuse, et - poursuite de la densification par infiltration de la préforme fibreuse avec une composition d'infiltration contenant au moins du silicium et au moins un autre élément apte à abaisser la température de fusion de la composition d'infiltration à une température inférieure ou égale à 1150°C.

METHOD AND DEVICE FOR THE SECURE PROTECTION OF AN OFFICIAL DOCUMENT AND OFFICIAL DOCUMENT THUS PROTECTED

A method for the secure protection of a portion of the surface of an official document bearing markings, in which: a transparent security layer (17) is selected, the layer including at least one semi-transparent printed image including at least one transparent binder and at least one thermochromic pigment (14, 13, 12, 11); the semi-transparent printed image reveals at least one semi-transparent visible pattern in a first non-activated state at least a first temperature, such that the markings can be seen through the image, the pattern not being visible in a second activated state at least a second temperature different from the first temperature. A device for the secure protection of a portion of the surface of an official document and such an official document are also described.

MANUFACTORING PROCESS OF COMPOSITE MATERIAL PARTS THERMOSTRUCTURAL

Un procédé de fabrication de pièce en matériau composite thermostructural comprend la réalisation d'une préforme fibreuse formée de fils ou câbles, et imprégnée par une composition consolidante contenant un précurseur de carbone ou céramique, la transformation du précurseur en carbone ou céramique par pyrolyse et, ensuite, la densification de la préforme par infiltration chimique en phase gazeuse. On utilise une composition consolidante qui contient en outre des charges solides réfractaires sous forme de poudre de granulométrie moyenne inférieure à 200 nanomètres et qui laisse, après pyrolyse, une phase solide consolidante dans laquelle le carbone ou la céramique issu du précurseur occupe un volume représentant entre 3% et 10% du volume apparent de la préforme et les charges solides occupent un volume représentant entre 0,5% et 5% du volume apparent de la préforme.

COATING FOR ELECTRONIC CIRCUIT, PASTILLE AND HULL OF PROTECTION USING SUCH a COATING AND MANUFACTORING PROCESS Of SUCH a PASTILLE

La pastille 14 de protection d'un dispositif électronique d'identification 16 comportant un circuit électronique 20 et un émetteur-récepteur à antenne périphérique 22 est constituée d'un enrobage 24 de résine époxy à 100% d'extrait sec, de préférence du type monocomposant sans solvant. La résine est déposée dans la cavité 28 d'un moule 26 pour enrober le dispositif électronique 16 et remplir la cavité 28 par auto étalement, puis polymérisée par chauffage à 80°C.

WEAVING MACHINE WITH ELEMENT MADE OF MOLYBDENUM

L'invention concerne un métier à tisser (100) comportant au moins un élément (121 ; 113) en molybdène destiné à entrer en contact avec des fils (201 ; 202) à tisser.

METHOD FOR PROTECTING A DOCUMENT, PROTECTION DEVICE INCLUDES AN ADHESIVE LAYER AND DOCUMENT

METHOD OF MANUFACTURING A CMC FLOW MIXER LOBED STRUCTURE FORA GAS TURBINE AEROENGINE

Method of manufacturing a gas turbine flow mixer lobed structure having a n annular upstream part extended in the downstream direction by a part that forms a multi-lobed skirt, the method involving: producing a fibrous preform (100) using refractory fibres of a shape corresponding to that of the lobed structure that is to be manufactured, from several constituent elements of fibrous texture which are joined together or shaped using tooling of a shape corresponding to that of the lobed structure that is to be manufactured in order to obtain an assembled fibrous preform with a first preform part (111) corresponding to the annular part of the lobed structure and a second prefo rm part (112) corresponding to the multi-lobed skirt of the lobed structure, the constituent elements of the fibrous preform being assembled at least pa rtially along connecting lines (121) which run substantially in the directio n in which the flow travels in the region of the lobes of the multi-lobed sk irt preform ...

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE CONTAINING MATRIX PHASES FOR HEALING AND DEFLECTING CRACKS

The process comprises the following steps: formation of a porous fibrous reinforcing structure; introduction of powders into the pores of the fibrous structure, said powders containing constituent elements of the matrix of th e composite; and formation of at least the main part of the matrix from said powders, by reaction between the powders and/or with at least one additiona l element supplied; the powders introduced into the fibrous structure and th e element(s) supplied comprising elements for forming at least one discontin uous healing matrix phase comprising a boron compound and at least one disco ntinuous matrix phase comprising a compound having a crack-deflecting lamell ar structure. The formation of at least the main part of the matrix is obtai ned by the chemical reaction between the powders introduced into the fibrous structure and at least one additional element supplied, or by sintering the powders.

PROCESS FOR MANUFACTURING A THERMOSTRUCTURAL COMPOSITE PART

The invention relates to a process for manufacturing a part made of a composite comprising a fibrous reinforcement densified by a matrix, which process comprises the steps of: production of a fibrous preform consolidated by impregnation (S4) of a fibrous texture comprising yarns by means of a liquid consolidation composition containing a precursor of a consolidating material and transformation (S7) by pyrolysis of the precursor made of consolidating material so as to obtain a consolidated preform of maintained shape; and densification (S8) of the consolidated fibrous preform by chemical vapour infiltration, characterized in that it includes, before the impregnation (S4) of the fibrous texture with the liquid consolidation composition, a step (S2) of filling the porosity of the yarns of said texture by means of a filling composition.

GAMBLING CHIP AND METHOD FOR MARKING SAME

Le jeton de jeu (30) comporte sur au moins une de ses faces (32) et sur le chanfrein périphérique (34) un décor graphique réalisé par tampographie à l'aide d'un tampon encreur (40) dont la tête (42) déformable est comprimée. Le décor obtenu par tampographie est recouvert d'un vernis protecteur. L'invention concerne également un procédé de marquage du décor d'un jeton de jeu par au moins une opération de tampographie à l'encre associé au dépôt d'au moins une couche de vernis.

MANUFACTORING PROCESS Of a MATERIAL PART COMPOSITIE THERMOSTRUCTURAL AND PART THUS OBTAINED

Le procédé comprend : - la formation par infiltration chimique en phase gazeuse sur les fibres (30) d'une structure fibreuse en fibres réfractaires d'une première couche d'interphase (32) ayant une épaisseur au plus égale à 100 nanomètres, - l'imprégnation de la structure fibreuse par une composition de consolidation comportant une résine précurseur de carbone ou céramique, - la formation d'une préforme fibreuse consolidée par mise en forme de la structure fibreuse imprégnée et transformation de la résine en un résidu solide (34) en carbone ou céramique par pyrolyse, - la formation par infiltration chimique en phase gazeuse d'une deuxième couche d'interphase (36), et - la densification de la préforme par une matrice réfractaire (38). On préserve ainsi la capacité de déformation de la structure fibreuse pour obtenir une préforme fibreuse de forme complexe tout en garantissant la présence d'une interphase continue entre fibres et matrice. The method comprises: - the formation by chemical vapor infiltration on the fibers (30) of a refractory fiber fibrous structure of a first interphase layer (32) having a thickness at most equal to 100 nanometers, - impregnating the fibrous structure with a consolidation composition comprising a precursor resin of carbon or ceramic, - forming a consolidated fiber preform by shaping the impregnated fibrous structure and converting the resin into a solid residue (34) in carbon or ceramic by pyrolysis, - the chemical vapor infiltration formation of a second interphase layer (36), and - the densification of the preform by a refractory matrix (38). This preserves the deformation capacity of the fibrous structure to obtain a fibrous preform of complex shape while ensuring the presence of a continuous interphase between fibers and matrix.

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE CONTAINING MATRIX PHASES FOR HEALING AND DEFLECTING CRACKS

Le procédé comprend les étapes de : formation d'une structure de renfort fibreuse poreuse ; introduction dans la porosité de la structure fibreuse de poudres contenant des éléments constitutifs de la matrice du matériau composite ; et formation d'au moins une partie principale de la matrice à partir desdites poudres, par voie réactive entre les poudres et/ou avec au moins un élément additionnel apporté ; les poudres introduites dans la structure fibreuse et le ou les élément(s) apporté(s) comprenant des éléments de formation d'au moins une phase de matrice discontinue cicatrisante comportant un composé boré et au moins une phase de matrice discontinue comportant un composé à structure lamellaire déviateur de fissures. La formation d'au moins une partie principale de la matrice est obtenue avec réaction chimique entre les poudres introduites dans la structure fibreuse et au moins un élément additionnel apporté, ou par frittage des poudres.

Telephone jack connector socket manufacture method having wire contacts/equilibrium plate manufactured together then contacts/equilibrium plate de soldered.

... - L'objet de l'invention est un procédé de fabrication d'une plaquette destinée à l'équilibrage de l'embase d'un connecteur monté en surface d'un support et des contacts (54) filaires disposés dans cette embase, caractérisé en ce qu'il comprend les étapes suivantes : - découpe d'au moins un contact (54) filaire et d'une plaquette (58) d'équilibrage dans une même bande porteuse (56), et - désolidarisation des contacts (54) et de la plaquette (58) de la bande porteuse (56), ...

REALIZATION Of a PREFORM PER REINFORCEMENT Of a FIBROUS STRUCTURE AND/OR CONNECTION BETWEEN THEM OF FIBROUS STRUCTURES AND APPLICATION TO the REALIZATION OF COMPOSITE MATERIAL PARTS

On consolide une structure fibreuse poreuse par formation au sein de celle-ci d'un dépôt d'un matériau réfractaire réalisant une densification partielle de la structure fibreuse de manière à lier les fibres de la structure fibreuse entre elles pour permettre à la structure fibreuse d'être manipulée sans être déformée, tout en laissant libre la plus grande partie de la porosité initiale de la structure fibreuse, et on implante des épingles rigides (10) à travers la structure poreuse consolidée (20). Une ébauche est obtenue par renfort d'une structure fibreuse par implantation d'épingles ou par liaison entre elles de structures fibreuses consolidées, la liaison étant réalisée par implantation d'épingles.

METHOD FOR MANUFACTURING THERMOSTRUCTURAL COMPOSITE MATERIAL MEMBER WHICH GUARANTEES SERIAL SURFACTANT BETWEEN FIBER AND MATRIX

PURPOSE: A method for manufacturing thermostructural composite material member which preserves ability of fiber structure to deformation. CONSTITUTION: A method for manufacturing thermostructural composite material member comprises: a step(12) of forming a first serial surfactant layer on the fiber of fireproof; a step(14,16) of embodying fiber structure in which consolidation composition is injected to form fiber perform; a step(18) of converting a resin to discontinuous solid residue through pyrolysis; a step(22) of forming a second serial surfactant layer; and a step of performing densification of perform with fireproof matrix. COPYRIGHT KIPO 2010 ...

Making a needled fiber preform for fabricating a composite material part

Silicon chip token and methods for making same

METHOD OF PRODUCING AN IRIDESCENT PRINTED POLYCHROMATIC TRANSPARENT IMAGE

L'invention concerne un procédé de réalisation d'une image (8) transparente polychromatique imprimée iridescente quelconque dont au moins deux couleurs changent simultanément lors d'un changement d'angle de vue de ladite image sous éclairage par au moins une source de lumière visible.

PROCEDE DE FABRICATION D'UNE STRUCTURE ALVEOLAIRE DE FORME COURBEE EN MATERIAU COMPOSITE

Un procédé de fabrication d'une structure alvéolaire courbée comprend les étapes suivantes : - réalisation d'une structure fibreuse déployable (100) par tissage multicouche entre une pluralité de couches de fils de chaîne et une pluralité de couches de fils de trame, la structure fibreuse comportant des zones de déliaison s'étendant dans l'épaisseur de la structure fibreuse, les zones de déliaison étant espacées les unes des autres par des portions de liaison entre plusieurs couches de fils de trame, les portions de liaison étant décalées d'un ou plusieurs fils de trame dans une direction parallèle à celle des couches de fils de trame entre chaque série de plans d'armure, - imprégnation de la structure fibreuse (100) avec une résine précurseur d'un matériau déterminé, - déploiement de la structure fibreuse (100) sur un outillage de maintien (50) de manière à former dans la structure fibreuse une cellule ou alvéole au niveau de chaque zone de déliaison, l'outillage présentant en outre une ...

METHOD FOR THE PRODUCTION OF A CURVED CERAMIC SOUND ATTENUATION PANEL

The invention relates to a method for producing a curved sound attenuation panel, comprising the following steps: impregnating a fibrous structure defining a honeycomb structure (150) with a ceramic precursor resin; polymerising the ceramic precursor resin while maintaining the fibrous structure on a tool having a curved shape corresponding to the end shape of the honeycomb structure (150); applying first and second skins to the honeycomb structure (150), each skin being formed by a fibrous structure (200; 300) impregnated with a ceramic precursor resin and each skin being applied to the honeycomb structure before or after polymerisation of the resin of the skins; pyrolysing the assembly formed by the honeycomb structure and the first and second skins; and densifying the assembly by means of gas-phase chemical infiltration.

Ceramic matrix composite flow mixer's lobe structure fabricating method for aero engine, involves forming fibrous preform in refractory fibers, and densifying shaped preform and assembling preform by ceramic matrix

Procédé de fabrication d'une structure à lobes de mélangeur de flux de turbine à gaz ayant une partie amont annulaire prolongée vers l'aval par une partie formant jupe multilobée, le procédé comprenant : - la réalisation d'une préforme fibreuse (100) en fibres réfractaires ayant une forme correspondant à celle de la structure à lobes à fabriquer, à partir de plusieurs éléments constitutifs en texture fibreuse qui sont assemblés entre eux et mis en forme au moyen d'un outillage de forme correspondant à celle de la structure à lobes à fabriquer pour obtenir une préforme fibreuse assemblée avec une première partie de préforme (111) correspondant à la partie annulaire de la structure à lobes et une deuxième partie de préforme (112) correspondant à la jupe multilobée de la structure à lobes, l'assemblage des éléments constitutifs de la préforme fibreuse étant au moins en partie réalisé le long de lignes de liaison (121) qui s'étendent sensiblement dans le sens d'écoulement du flux au niveau ...

METHOD FOR PROTECTING A DOCUMENT, PROTECTION DEVICE INCLUDES AN ADHESIVE LAYER AND DOCUMENT

L'invention concerne un procédé de protection des inscriptions variables d'un document (10) dans lequel : - on colle un film (2) transparent sur une face dudit document en vue de protéger des inscriptions variables dudit document (10), par l'intermédiaire d'au moins une couche adhésive (5) comprenant au moins un polymère thermoplastique, - la couche adhésive comprend un polymère thermoplastique présentant une température de transition vitreuse comprise entre 40°C et 110°C et présentant un indice d'hydroxyle compris entre 3mg de KOH/g et 60mg de KOH/g et/ou un indice d'acide compris entre 2mg de KOH/g et 150mg de KOH/g, - ladite couche adhésive comprend un agent réticulant présentant au moins 2,8 fonctions choisies dans le groupe formé des isocyanates, des carbodiimides, des azyridines et des alcoxysilanes, - lors du collage, on réalise une réticulation de ladite couche adhésive. L'invention concerne également un dispositif de protection (1) et un document (10).

METHOD OF FABRICATING THERMOSTRUCTURAL COMPOSITE MATERIAL PART, AND PART OBTAINED THEREBY

PROBLEM TO BE SOLVED: To provide a method of fabricating a thermostructural composite material part that maintains mechanical characteristics at high temperature. SOLUTION: The method includes: (1) using chemical vapor infiltration to form a first continuous interphase 32 on the fibers 30 of a fiber structure made of refractory fibers, the interphase having a thickness of no more than 100 nanometers; (2) impregnating the fiber structure with a consolidation composition comprising a carbon or ceramic precursor resin; (3) forming a fiber preform that is consolidated by shaping the impregnated fiber structure and using pyrolysis to transform the resin into a discontinuous solid residue 34 of carbon or ceramic; (4) using chemical vapor infiltration to form a second continuous interphase layer 36; and (5) densifying the preform with a refractory matrix. The invention also includes a part obtained by this method. COPYRIGHT: (C)2010,JPO&INPIT ...

LOW-THICKNESS THERMOSTRUCTURAL COMPOSITE MATERIAL PART, AND MANUFACTURE METHOD

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

PROCEDE DE FABRICATION D'UN PANNEAU CERAMIQUE D'ATTENUATION ACOUSTIQUE DE FORME COURBEE

Un procédé de fabrication d'un panneau d'atténuation acoustique de forme courbée comprenant les étapes suivantes : - imprégnation d'une structure fibreuse définissant une structure alvéolaire (150) avec une résine précurseur de céramique, - polymérisation de la résine précurseur de céramique avec maintien de la structure fibreuse sur un outillage présentant une forme courbée correspondant à la forme finale de la structure alvéolaire (150), - accostage de la structure alvéolaire (150) avec des première et deuxième peaux chacune formées d'une structure fibreuse (200; 300) imprégnée avec une résine précurseur de céramique, chaque peau étant accostée à ladite structure alvéolaire avant ou après polymérisation de la résine desdites peaux, - pyrolyse de l'assemblage constitué par la structure alvéolaire et les première et deuxième peaux, - densification dudit assemblage par infiltration chimique en voie gazeuse.

SIMULTANEOUS MANUFACTORING PROCESS Of UINE PLATE Of BALANCING Of an ELECTRIC EMBASEDE CONNECTOR AND TELEGRAPHIC CONTACTS

Method of fabricating a composite material part with improved intra-yarn densification

A method of fabricating a composite material part comprises fiber reinforcement densified by a matrix. The method comprises the following steps: making a fiber fabric by weaving yarns having an initial mean fiber percentage; and densifying the fiber fabric with a matrix. The fiber fabric is subjected, prior to densification, to one or more jets of water under pressure so as to reduce the mean fiber percentage in the fabric to a value lying in the range 20% to 45%.

Method for producing parts made of a thermostructural composite material

A method of fabricating a thermostructural composite material part includes making a fiber preform formed of yarns or tows and impregnated by a consolidating composition containing a carbon- or ceramic-precursor, transforming the carbon- or ceramic-precursor by pyrolysis, and then densifying the preform by chemical vapor infiltration. A consolidating composition is used that additionally contains refractory solid fillers in the powder form presenting mean grain size less than 200 nanometers and leaving, after pyrolysis, a consolidated solid phase in which the carbon or the ceramic derived from the precursor occupies a volume representing 3% to 10% of the apparent volume of the preform, and the solid fillers occupy a volume representing 0.5% to 5% of the apparent volume of the preform.

PRODUCTION IN COMPOSITE MATERIAL OF A LOBED STRUCTURE OF A FLOW MIXER

The invention relates to the production of a composite material of a lobed structure () of a flow mixer which comprises a portion having a plurality of lobes (). For this purpose, a fibrous preform containing a resin will be produced in a simple geometric configuration of developable revolution. This is an intermediate state. By exploiting the thermoformable or thermosetting nature of the resin, the geometry of this intermediate preform is modified to deform it with limited offsets towards the final geometry. 111.-. (canceled)12. A method for manufacturing a composite material structure for a lobed structure of a gas turbine flow mixer , said flow flowing from upstream to downstream , the lobed structure having a final geometry and comprising a multilobed skirt portion having a plurality of lobes distributed around a longitudinal axis of the lobed structure , the method being natureized in that it comprises:a) producing a fibrous preform comprising one of a thermoformable resin and a thermosetting resin, in a configuration having an intermediate geometry essentially developable by post-forming to the final geometry the part to be produced, the intermediate geometry being simpler than said final geometry,b) at least by exploiting the thermoformable or thermosetting nature of the resin, post-forming the intermediate geometric configuration of revolution, deforming it to the final geometry.13. A method according to claim 12 , wherein a thermoformable resin being used in step a) claim 12 , the resin is fugitive or soluble in a solvent so that it disappears at least essentially before the end of the method.14. Method according to claim 12 , in which claim 12 , in step b) claim 12 , exploiting the thermoformable or thermosetting nature of the resin comprises heating the fibrous preform and pressurizing said fibrous preform claim 12 , after it has been brought into contact with a mould to the final geometry of the part to be produced.15. Method according to claim 14 , ...

METHOD FOR MANUFACTURING A MULTILAYER DATA MEDIUM WITH SECURITY MARKING WHICH CAN BE MARKED BY LASER

The invention relates to a method for manufacturing a multi-layer data medium by hot rolling under pressure, able to be marked under the effect of laser radiation applied to at least one outer surface (11) of this medium, in which at least one marking (13) with optically variable effect is disposed with respect to a laser marking sub-layer so that said outer surface (11) has a portion with optically variable effect optically superimposed on at least one part of the laser marking sub-layer and a portion (16) without marking with optically variable effect optically superimposed on at least one part of the laser marking sub-layer. These portions are produced with contents of at least one marking agent which is sensitive to said laser radiation which are different.

METHOD OF PRODUCING A TRANSPARENT POLYCHROMATIC PRINTED IRIDESCENT IMAGE

A method of producing a transparent polychromatic printed iridescent image (8) of any kind in which at least two colors change simultaneously when there is a change in the viewing angle of the image under illumination by at least one visible light source.

METHOD FOR MARKING A GAMING DISK BY PAD PRINTING AND DEVICE FOR IMPLEMENTING SAME

La tranche (14) d'un jeton de jeu (10) à tranche droite est marquée d'un décor graphique réalisé par tampographie à l'aide d'un tampon encreur dont la tête (36) déformable est comprimée. Le tampon est encré à l'aide d'un cliché plan comportant une zone en couronne porteuse d'un décor-image défini par une représentation radialement déformée du décor graphique de la tranche (14) du jeton (10). Le jeton (10) est disposé sur un socle (30) et centré au début de l'opération de marquage par des coulisseaux de centrage (32) escamotables lors du marquage de la tranche du jeton (10).

Mixer for separate-flow nozzle

Low-thickness thermostructural composite material part, and manufacture method

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

PROCESS FOR MANUFACTURING A PART MADE OF A CERAMIC MATRIX COMPOSITE CONTAINING MATRIX PHASES FOR HEALING AND DEFLECTING CRACKS

The process comprises the following steps: formation of a porous fibrous reinforcing structure; introduction of powders into the pores of the fibrous structure, said powders containing constituent elements of the matrix of the composite; and formation of at least the main part of the matrix from said powders, by reaction between the powders and/or with at least one additional element supplied; the powders introduced into the fibrous structure and the element(s) supplied comprising elements for forming at least one discontinuous healing matrix phase comprising a boron compound and at least one discontinuous matrix phase comprising a compound having a crack-deflecting lamellar structure. The formation of at least the main part of the matrix is obtained by the chemical reaction between the powders introduced into the fibrous structure and at least one additional element supplied, or by sintering the powders.

THERMOCHROMIC INK COMPOSITION

L'invention concerne une composition d'encre thermochromique comprenant dans un milieu liquide, dit solvant, une dispersion de microcapsules thermochromiques incorporant au moins un leuco-colorant et un liant thermoplastique choisi dans le groupe formé des polyesters polyacryliques, des polyuréthanes, et de leurs copolymères, caractérisée en ce que ledit solvant est aprotique. L'invention s'étend à un procédé de fabrication d'une carte et à une telle carte incorporant au moins un motif thermochromique réalisé avec une composition d'encre thermochromique selon l'invention.

INTEGRATING AFTER-BODY PARTS OF AN AEROENGINE

The invention concerns an afterbody assembly (400) of an aircraft engine comprising an exhaust housing (100) made from a metal material comprising a plurality of arms (130) extending radially between an inner shell (110) and an outer shell (120). The assembly comprises at least one axisymmetric part (200) made from a composite material extending between an upstream end (201) secured to said exhaust housing (100) and a free downstream end (202). According to the invention, the axisymmetric part (200) comprises, at the upstream end (201) of same, an annular portion (210) comprising a plurality of slots (211) together delimiting a plurality of elastic fastening tabs (212). Each slot engages with an arm (130) of the exhaust housing which further comprises attachment portions (131) to which the elastic fastening tabs (212) are secured.

Producing a composite material part comprises filling pores in the fibers of a fibrous structure with a filling composition before impregnation, pyrolysis and densification

L'invention concerne un procédé de fabrication d'une pièce en matériau composite comprenant un renfort fibreux densifié par une matrice, procédé comportant les étapes de : - réalisation d'une préforme fibreuse consolidée par imprégnation (S4) d'une texture fibreuse comprenant des fils au moyen d'une composition liquide de consolidation contenant un précurseur d'une matière consolidante et transformation (S7), par pyrolyse, du précurseur en matière consolidante afin d'obtenir une préforme consolidée maintenue en forme, et - densification (S8) de la préforme fibreuse consolidée par infiltration chimique en phase vapeur, caractérisé en ce qu'il comprend, avant l'imprégnation (S4) de la texture fibreuse avec la composition liquide de consolidation, une étape de comblement (S2) de la porosité des fils de ladite texture au moyen d'une composition de comblement.

COATING FOR ELECTRONIC CIRCUIT, PASTILLE AND HULL OF PROTECTION UTILISANTUN SUCH COATING AND MANUFACTORING PROCESS Of SUCH a PASTILLE

WEAVING MACHINE WITH ELEMENT MADE OF MOLYBDENUM

L'invention concerne un métier à tisser (100) comportant au moins un élément (121 ; 113) en molybdène destiné à entrer en contact avec des fils (201 ; 202) à tisser. A loom (100) having at least one molybdenum member (121; 113) for contacting yarns (201; 202) to be woven.

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

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

Method of forming a fibre reinforced composite material

A method of forming a fibre reinforced composite comprises the steps of: (a) forming a fibre preform by superposing and needling fibre plies together; and (b) densifying the preform by introducing a matrix-constituting material, wherein before the end of the needling process a powder 20, preferably a solid resin or solid filler, is dusted [Figure 1B] onto the surface of at least one of the fibre plies. The preform may be densified by chemical vapour infiltration (C.V.I.) or by a liquid technique.

Gambling chip and method for marking same

Silicon chip token and methods for making same

Making a blank from a fibre structure

A porous fiber structure is consolidated by forming within a deposit of a refractory material by partially densifying the fiber structure in such a manner as to bond together the fibers of the fiber structure so as to enable the fiber structure to be handled without being deformed, while leaving empty the major fraction of the initial pore volume of the fiber structure, and rigid pins (10) are implanted through the consolidated porous structure (20) A blank is obtained by reinforcing a fiber structure by implanting pins or by bonding together consolidated fiber structures, the bonding being performed by implanting pins. Consolidation can be performed by chemical vapour infiltration or by a liquid method. The pins may be implanted in a direction that is inclined relative to surface 20a of structure 20. Consolidation is by forming a deposit of ceramic or of carbon.

METHOD OF FABRICATING A THERMOSTRUCTURAL COMPOSITE MATERIAL PART, AND A PART OBTAINED THEREBY

The method comprises: using chemical vapor infiltration to form a first continuous interphase on the fibers of a fiber structure made of refractory fibers, the interphase having a thickness of no more than 100 nanometers; impregnating the fiber structure with a consolidation composition comprising a carbon or ceramic precursor resin; forming a fiber preform that is consolidated by shaping the impregnated fiber structure and using pyrolysis to transform the resin into a discontinuous solid residue of carbon or ceramic; using chemical vapor infiltration to form a second continuous interphase layer; and densifying the preform with a refractory matrix. This preserves the capacity of the fiber structure to deform so as to enable a fiber preform to be obtained that is of complex shape, while nevertheless guaranteeing the presence of a continuous interphase between the fibers and the matrix.

Coating for electronic circuit, protective pellet and shell using same and method for making such a pellet

Method for the production of a curved ceramic sound attenuation panel

The invention relates to a method for producing a curved sound attenuation panel, comprising the following steps: impregnating a fibrous structure defining a honeycomb structure (150) with a ceramic precursor resin; polymerizing the ceramic precursor resin while maintaining the fibrous structure on a tool having a curved shape corresponding to the end shape of the honeycomb structure (150); applying first and second skins to the honeycomb structure (150), each skin being formed by a fibrous structure (200; 300) impregnated with a ceramic precursor resin and each skin being applied to the honeycomb structure before or after polymerization of the resin of the skins; pyrolyzing the assembly formed by the honeycomb structure and the first and second skins; and densifying the assembly by means of gas-phase chemical infiltration.

SPIELMARKE UND MARKIERUNGSVERFAHREN

Process for manufacturing a part made of a ceramic matrix composite containing matrix phases for healing and deflecting cracks

The method comprises the steps of: forming a porous fiber-reinforcing structure; introducing into the pores of the fiber structure powders containing elements for constituting the composite material matrix; and forming at least a main fraction of the matrix from said powders by causing a reaction to take place between said powders or between at least a portion of said powders and at least one delivered additional element; the powders introduced into the fiber structure and the delivered additional element(s) comprising elements that form at least one healing discontinuous matrix phase including a boron compound and at least one discontinuous matrix phase including a crack-deflecting compound of lamellar structure. At least a main fraction of the matrix is formed by chemical reaction between the powders introduced into the fiber structure and at least one delivered additional element, or by sintering the powders.

EINSTELLUNGSEINRICHTUNG, ZUM BEISPEIL FUER FAHRZEUGLEUCHTE.

VERFAHREN ZUR HERSTELLUNG EINER SCHALE AUS THERMOBESTÄNDIGEM VERBUNDWERKSTOFF, INSBESONDERE FÜR EINE EINRICHTUNG ZUR PRODUKTION VON EINKRISTALLINEM SILIZIUM

TAMPONDRUCKVERFAHREN FÜR EINE SPIELMARKE UND VORRICHTUNG ZUR DESSEN AUSFÜHRUNG

ELEKTRONISCHE WERTMARKE UND VERFAHREN ZU IHRER HERSTELLUNG

METHOD FOR PRODUCING FIBER BLANK AND METHOD FOR PRODUCING FIBER REINFORCED COMPOSITE MATERIAL PART

PROBLEM TO BE SOLVED: To provide a method for reinforcing a fiber structure or binding a plurality of fiber structures, while conventional defects are settled. SOLUTION: A porous fiber structure is consolidated by forming deposit of a refractory material therein by partially densifying the fiber structure in such a manner as to bond the fibers of the fiber structure together so as to enable the fiber structure to be handled without deformed, while the major part of the initial pore volume of the fiber structure is made empty, and hard pins are implanted through the consolidated porous structure. A blank is obtained by reinforcing a fiber structure by implanting pins or by bonding consolidated fiber structures together, The bonding is performed by implanting pins. COPYRIGHT: (C)2004,JPO&NCIPI ...

Method for brazing parts made from a composite material, with anchoring of the brazed joint

A method of assembling together by brazing two parts made of composite material, each part having an assembly face for brazing with the assembly face of the other part, the method including: making a plurality of cavities in the assembly face of at least one of the two composite material parts, at least some of the cavities opening out into one or more portions of the part that are situated outside the assembly face; interposing capillary elements between the assembly faces of the composite material parts; placing a brazing composition in contact with a portion of the capillary elements; and applying heat treatment to liquefy the brazing composition so as to cause the molten brazing composition to spread by capillarity between the assembly faces of the composite material parts.

TAMPONDRUCKVERFAHREN FÜR EINE SPIELMARKE UND VORRICHTUNG ZUR DESSEN AUSFÜHRUNG

Method for producing a curved honeycomb structure made from composite material

A method of fabricating a curved cellular structure includes making an expandable fiber structure by multilayer weaving between layers of warp yarns and layers of weft yarns, the structure having zones of non-interlinking extending in the thickness of the structure, the non-interlinking zones spaced apart from one another by portions of interlinking between layers of weft yarns, the portions of interlinking offset by one or more weft yarns in a direction parallel to the direction of the layers of weft yarns between each series of these planes; impregnating the fiber structure with a resin; expanding the fiber structure on support tooling to form a cell in the fiber structure at each zone of non-interlinking, the tooling also presenting a curved shape corresponding to the shape of the cellular structure that is to be fabricated; and polymerizing the resin of the fiber structure to form a curved cellular structure.

CMC material part manufacture method

The invention relates to the manufacture of a composite material part, includes the steps of: creating a consolidated fibrous preform, the fibers of the preform being carbon or ceramic fibers and being coated with an interphase formed of at least one pyrolytic carbon (PyC) or boron-doped carbon (BC) layer; obtaining a partially densified, consolidated fibrous preform, the partial densification including the formation, on the interphase, of a first matrix phase including a plurality of layers of self-healing material alternating with one or more PyC or BC layers; and pursuing densification by scattering carbon and/or ceramic powder within the partially densified, consolidated preform and permeating with fused silicon or a liquid composition predominantly formed of silicon.

Anfertigung einer genadelten Faservorform zur Herstellung eines Verbundmaterialteils

Eine Faservorform, die eine Faserverstärkung eines herzustellenden Verbundmaterialteils darstellt, wird angefertigt durch Übereinanderlegen und miteinander Verbinden von Faserlagen und durch Verdichten der genadelten Vorform, indem ein die Matrix des Verbundmaterials bildendes Material in sie eingebracht wird. Während des Anfertigungsprozesses der Vorform wird ein Pulver auf die Oberfläche mindestens mancher der Lagen aufgestäubt, wobei das Pulver mindestens einen Bestandteil aufweist, der aus einem festen Harz in Pulverform und festen Füllstoffen in Pulverform ausgewählt ist. Das Pulver wird auf die Oberfläche der obersten Lage der Vorform, die angefertigt wird, aufgestäubt, bevor mindestens eine zusätzliche Lage darüber gelegt und genadelt wird.

LOW-THICKNESS THERMOSTRUCTURAL COMPOSITE MATERIAL PART, AND MANUFACTURE METHOD

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

METHOD OF FABRICATING A THERMOSTRUCTURAL COMPOSITE MATERIAL PART, AND A PART OBTAINED THEREBY

The method comprises: 1. A thermostructural composite material part comprising fiber reinforcement of refractory fibers densified by a refractory matrix obtained by chemical vapor infiltration , with an interphase being interposed between the fibers of the fiber reinforcement and the matrix , wherein the interphase comprises a first continuous interphase layer coating the fibers of the fiber reinforcement and having a thickness of not more than 100 nanometers , and a second continuous interphase layer , the second interphase layer covering the first interphase layer and discontinuous grains of a solid carbon or ceramic residue that results from pyrolyzing a resin , which grains are interposed between the first and second interphase layers.2. A part according to claim 1 , wherein the first interphase layer is of a material selected from pyrolytic carbon claim 1 , boron nitride claim 1 , and boron-doped carbon.3. A part according to claim 1 , wherein the second interphase layer is selected from pyrolytic carbon claim 1 , boron nitride claim 1 , boron-doped carbon claim 1 , and a material made up of layers of pyrolytic carbon claim 1 , boron nitride claim 1 , or boron-doped carbon alternating with layers of silicon carbide.4. A part according to claim 1 , wherein the first interphase layer has a thickness of not more than 50 nanometers.5. A part according to claim 1 , wherein the first interphase layer has a thickness of not less than 10 nanometers.6. A part according to claim 1 , wherein the second interphase layer has a thickness of not less than 100 nanometers.7. A part according to claim 1 , wherein the matrix and the grains of solid residue of pyrolyzing resin are made of ceramic. This application is a divisional application of U.S. application Ser. No. 12/501,648 filed Jul. 13, 2009, which claims priority to French Patent application 0854937 filed Jul. 21, 2008. Each of the above listed earlier applications is hereby incorporated by reference.The invention ...

Method for the production of a curved ceramic sound attenuation panel

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

TOOL AND METHOD FOR MANUFACTURING A COMPOSITE-MATERIAL PART BY MEANS OF A LIQUID PROCESS

A tool for manufacturing a ceramic matrix composite part by injecting a slurry, the tool includes an injection chamber intended to receive at least one fibrous preform to be densified, wherein the injection chamber includes first injection ports which are formed in a first side of the injection chamber for injecting the slurry into the injection chamber, the first injection ports being distributed along the first side of the injection chamber; the injection chamber includes first drainage ports which are formed on the first side of the injection chamber for draining a liquid phase of the slurry from the injection chamber, the first drainage ports being distributed along the first side of the injection chamber; and the tool includes a first filtration element which is located on the first side of the injection chamber and which is located opposite the first drainage ports. 1. A tool for manufacturing a ceramic matrix composite part by injecting a slurry , said tool comprising an injection chamber adapted to receive at least one fibrous preform to be densified , wherein:the injection chamber comprises a plurality of first injection ports which are formed in a first side of said injection chamber for injecting the slurry into the injection chamber, said first injection ports being distributed along the first side of the injection chamber;the injection chamber comprises a plurality of first drainage ports which are formed on the first side of said injection chamber for draining a liquid phase of the slurry from the injection chamber, said first drainage ports being distributed along the first side of the injection chamber; andthe tool comprises a first filtration element which is located on the first side of said injection chamber and which is located opposite the first drainage ports.2. The tool as claimed in claim 1 , wherein between 2% and 30% of a surface area of the first side of the injection chamber is pierced by the first injection ports and the first drainage ...

METHOD OF FABRICATING A PART OUT OF CMC MATERIAL

Fabricating a composite material part comprises the steps of making a consolidated fiber preform, the fibers of the preform being carbon or ceramic fibers that are coated in an interphase formed by at least one layer of pyrolytic carbon (PyC) or of boron-doped carbon (BC). Obtaining a partially densified consolidated fiber preform, where partial densification comprises forming a first matrix phase on the interphase, the first matrix phase comprising a plurality of layers of self-healing material alternating with one or more layers of PyC or of BC. Continuing densification by dispersing carbon and/or ceramic powder within the partially densified consolidated preform and by infiltrating molten silicon or a liquid composition formed for the most part of silicon. 112-. (canceled)13. A method of fabricating a part out of composite material having a matrix that is at least partially made of ceramic , the method comprising the steps of:making a fiber structure, the fibers of the fiber structure being carbon or ceramic fibers;forming an interphase coating on the fibers, the coating being formed by at least one layer of pyrolytic carbon (PyC) or of boron-doped carbon (BC);shaping the fiber structure by means of shaping tooling in order to obtain a preform of the part that is to be fabricated;consolidating the fiber preform in the shaping tooling;forming a first matrix phase on the interphase, the first matrix phase comprising a plurality of layers of self-healing material alternating with one or more layers of material selected from pyrolytic carbon (PyC) and boron-doped carbon (BC), the layers of self-healing material and the layers of PyC or BC being obtained by CVI in order to obtain a partially densified consolidated preform; andafter removing the preform from the shaping tooling, continuing densification by dispersing carbon powder and/or ceramic powder within the partially densified consolidated preform and by infiltrating molten silicon or a liquid composition formed ...

Systems, devices, and methods effected in response to establishing and/or terminating a physical communications link

Systems, devices, and methods that are effected in or by an electronic device in response to establishing and/or terminating a physical communications link are described. An electronic device may be entered into deep sleep and may include a power control circuit that activates the device out of deep sleep in response to establishing a physical communications link with a source of electric power, such as another electronic device. Either in combination with or separate from this, an electronic device may establish wireless communications with another electronic device in response to establishing and terminating a physical communications link with the other electronic device. The physical communications link may be used to transfer device identity data from one device to the other and thereby bypass the cumbersome “discovery” process common to conventional wireless communication techniques. Portable electronic devices and personal computing devices that are operative to perform the above are described.

METHOD FOR MANUFACTURING A PART MADE FROM A COMPOSITE MATERIAL BY MEANS OF THE INJECTION OF A LADEN CERAMIC SLURRY INTO A FIBROUS STRUCTURE

A process for manufacturing a composite part includes arranging a fibrous preform in a mold including an impregnation chamber which includes in its lower part a filter by making a first face of the preform rest on the filter, the impregnation chamber being closed by a flexible membrane placed opposite a second face of the preform, the membrane separating the impregnation chamber from a compaction chamber. The process further includes injecting a compression fluid into the compaction chamber so as to apply a first pressure on the membrane and injecting a slurry including ceramic particles into the impregnation chamber with a second pressure while maintaining the injection of the compression fluid, the second injection pressure of the slurry being lower than the first pressure on the membrane. 1. A process for manufacturing a composite part comprising:arranging a fibrous preform in a mold comprising an impregnation chamber which comprises in its lower part a filter by making a first face of the preform rest on said filter, the impregnation chamber being closed by a flexible membrane placed opposite a second face of the preform, said membrane separating the impregnation chamber from a compaction chamber; characterized in that the process further comprises the following steps:injecting a compression fluid into the compaction chamber so as to apply a first pressure on the membrane;injecting a slurry comprising ceramic particles into the impregnation chamber with a second pressure while maintaining the injection of the compression fluid, the second injection pressure of the slurry being lower than the first pressure on the membrane, andprogressively increasing the first pressure on the membrane and the second injection pressure of the slurry with maintenance of the second injection pressure of the slurry lower than the first pressure on the membrane.2. The process as claimed in claim 1 , wherein a pressure difference between the first pressure and the second pressure is ...

A METHOD OF FABRICATING A COMPOSITE MATERIAL PART BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS

A method of fabricating a part made of ceramic matrix composite material, the method includes fabricating the part by forming a ceramic matrix in the pores of a fiber structure, the ceramic matrix being formed by self propagating high temperature synthesis from a powder composition present in the pores of the fiber structure, 1. A method of fabricating a part made of ceramic matrix composite material , the method comprising the following step:a) fabricating the part by forming a ceramic matrix in the pores of a fiber structure, the ceramic matrix being formed by self propagating high temperature synthesis from a powder composition present in the pores of the fiber structure; [{'sub': 2', '2, 'of SiNO formed by self propagating high temperature synthesis by chemical reaction between a silicon powder, a silica powder, and a gaseous phase comprising the element N; or'}, {'sub': '2', 'of phases of TiN and of TiB, these compounds being formed by self propagating high temperature synthesis by chemical reaction between a powder comprising titanium, a powder comprising boron, and a gaseous phase comprising the element N.'}], 'the matrix formed during step a) comprising a majority by weight2. A method according to claim 1 , wherein claim 1 , prior to step a) claim 1 , a preliminary step b) is performed of densifying the fiber structure by a method other than the method of self propagating high temperature synthesis.3. A method according to claim 1 , wherein an additional step c) of densifying the part is performed after step a).48.-. (canceled)9. A method according to claim 1 , wherein the following steps are performed before step a):inserting at least a first powder into the pores of the fiber structure; and theninserting at least a second powder different from the first into the pores of the fiber structure;a ceramic matrix of composition that varies on going towards the outside surface of the part being obtained after step a).10. A method according to claim 1 , comprising ...

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

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

Integrating after-body parts of an aeroengine

The invention relates to an aeroengine after-body assembly comprising an exhaust casing made of metal having a plurality of arms extending radially between an inner shroud and an outer shroud. The assembly comprises at least one axisymmetric part made of composite material extending between an upstream end fastened to said exhaust casing and a downstream end that is free. In accordance with the invention, the axisymmetric part has an annular portion at its upstream end, which annular portion includes a plurality of slots defining between them a plurality of resilient fastener tabs. Each slot co-operates with an arm of the exhaust casing, which further includes fastener parts attached to the resilient fastening tabs.

METHOD OF PRODUCING A TRANSPARENT POLYCHROMATIC PRINTED IRIDESCENT IMAGE

A method of producing a transparent polychromatic printed iridescent image () of any kind in which at least two colors change simultaneously when there is a change in the viewing angle of the image under illumination by at least one visible light source. 2. The method according to claim 1 , wherein the proportion by mass of interferential pigment in the printing composition is between 10% and 25%.3. The method according to claim 1 , wherein at least one transparent image presents at least one second pattern that comprises at least one interferential pigment claim 1 , with at least one second pattern being formed by a second initial color at a first viewing angle under lighting by at least one visible light source claim 1 , and in which the second initial color changes into a second final color at a second viewing angle under lighting by at least one visible light source that is distinct from the first viewing angle.4. The method according to claim 1 , wherein at least two transparent images are printed; each transparent image is printed by using a printing composition that comprises a proportion by mass of interferential pigment in the printing composition of between 10% and 25%.5. The method according to claim 1 , wherein at least two transparent images are printed separately claim 1 , one after the other claim 1 , with the different transparent images forming—according to a first angular display range—a transparent polychromatic image according to a first additive-synthesis color composition claim 1 , and—according to a second angular display range—a transparent polychromatic image according to a second color composition claim 1 , distinct from the first color composition.6. The method according to claim 3 , wherein the first pattern and the second pattern are printed so that the first initial color and the second initial color are not superposed.7. The method according to claim 6 , wherein a first interferential printing pigment of the first pattern and a second ...

THERMOCHROMIC INK COMPOSITION

A thermochromic ink composition includes, in a liquid medium, known as solvent, a dispersion of thermochromic microcapsules incorporating at least one leuco-dye and a thermoplastic binder selected from the group containing polyacrylic polyesters, polyurethanes and copolymers thereof. The composition is characterised in that the solvent is aprotic. A a method for producing a card and such a card incorporating at least one thermochromic pattern produced with a thermochromic ink composition are also described. 114-. (canceled)16. The composition as claimed in claim 15 , wherein said solvent is chosen from the group of aprotic solvents having a dipole moment of from 0 to 1.9 C·m.17. The composition as claimed in claim 15 , wherein said solvent is chosen from the group of aprotic solvents having a dielectric constant of from 1.5 to 11.18. The composition as claimed in claim 15 , wherein said solvent is chosen from the group of polar aprotic solvents.19. The composition as claimed in claim 15 , comprising thermochromic microcapsules of melamine formaldehyde.20. The composition as claimed in claim 15 , comprising as binder a thermoplastic resin chosen from the group formed of alkyl poly(meth)acrylates and copolymers thereof.21. The composition as claimed in claim 15 , further comprising at least one anti-UV additive chosen from the group formed of ultraviolet absorbers and light stabilizers.22. The composition as claimed in claim 15 , comprising from 1 wt. % to 10 wt. %—especially from 2 wt. % to 5 wt. %—of an anti-UV additive.23. The composition as claimed in claim 15 , comprising in said solvent from 5 to 35 wt. % thermochromic microcapsules claim 15 , from 30 to 45 wt. % thermoplastic binder claim 15 , from 1 to 10 wt. % of at least one anti-UV additive.24. Method for producing a card of thermoplastic material—especially of polycarbonate—comprising at least one step of hot lamination under pressure of a plurality of layers of thermoplastic material especially of ...

METHOD AND DEVICE FOR THE SECURE PROTECTION OF AN OFFICIAL DOCUMENT AND OFFICIAL DOCUMENT THUS PROTECTED

A method for the secure protection of a portion of the surface of an official document bearing markings, in which: a transparent security layer () is selected, the layer including at least one semi-transparent printed image including at least one transparent binder and at least one thermochromic pigment (); the semi-transparent printed image reveals at least one semi-transparent visible pattern in a first non-activated state at least a first temperature, such that the markings can be seen through the image, the pattern not being visible in a second activated state at least a second temperature different from the first temperature. A device for the secure protection of a portion of the surface of an official document and such an official document are also described. 115-. (canceled)16. Method for the security protection of a surface portion of a layer of an official document bearing inscriptions to be protected , wherein:a transparent security layer is applied to said surface portion so as to cover said inscriptions to be protected, there is chosen a transparent security layer comprising at least one semi-transparent printed image comprising at least one transparent binder and at least one thermochromic pigment adapted to change color when there is a predetermined temperature variation,', 'in a first state, named the non-activated state, at least a first temperature, said semi-transparent printed image reveals at least one semi-transparent visible motif allowing said inscriptions to be protected to be seen through the image, said motif not being visible in a second state, named the activated state, at least a second temperature which is different from the first temperature,', 'the proportion of thermochromic pigments in the binder is such that the semi-transparent image allows said inscriptions to be protected to be seen through the image when the thermochromic pigments are in the non-activated state., 'wherein17. The method as claimed in claim 16 , wherein said semi ...

Automated usage driven engineering

Implementations directed to providing a computer-implemented method for automating vehicle feature updates, the method being executed by one or more processors and comprising receiving telematics data identifying an actual usage of a vehicle; performing a gap analysis between the actual usage of the vehicle and an expected usage of the vehicle; determining a feature update based on the gap analysis; providing the feature update to a product engineering module when the feature cannot be implemented by a software update; and providing the feature update to an onboard computer system when the feature can be implemented by a software update.

DOCUMENT COMPRISING AT LEAST TWO PHOTOLUMINESCENT IMAGES, SECURITY FILM AND PROTECTIVE SECURITY METHOD

A document () includes at least: 115. Document () , comprising:{'b': 5', '20, 'at least one first image () which is invisible under illumination in visible light and is visible under illumination by at least one first source () of non-visible light emitting in the short ultraviolet domain, said first image comprising at least one pigment which is photoluminescent under illumination by said first source of non-visible light,'}wherein the document further comprises:{'b': 9', '22, 'at least one second image () which is invisible under illumination in visible light and is visible under illumination by at least one second source () of non-visible light emitting in the long ultraviolet domain, said second image comprising at least one pigment which is photoluminescent under illumination by said second source of non-visible light,'}{'b': 7', '9', '20', '5', '20, 'at least one layer, named filtering layer (), superposed on said second image () and comprising at least one material, named filtering material, suitable for allowing the wavelengths emitted by said first source () of non-visible light to be filtered without preventing the first image () from being seen under illumination by the first light source ().'}27. A document according to claim 1 , wherein said filtering layer () is suitable for allowing wavelengths less than 300 nm claim 1 , in particular wavelengths between 200 nm and 300 nm claim 1 , to be filtered.3722. A document according to claim 1 , wherein said filtering layer () is suitable for not blocking wavelengths emitted by the second source () of non-visible light claim 1 , in particular wavelengths greater than 300 nm.495. A document according to claim 1 , wherein said second image () is different from said first image ().595. A document according to claim 1 , wherein the second image () is at least partially superposed on the first image ().659. A document according to claim 1 , wherein said first image () and said second image () are polychromatic ...

A METHOD OF FABRICATING A CMC PART

A method of fabricating a CMC part, includes coating a plurality of tows with an interphase by transporting the tows through a treatment chamber in which a gas phase is injected, the tows being tensioned during their transport and the interphase being formed by vapor deposition from the injected gas phase; forming a fiber preform by performing three-dimensional weaving using the tows coated with the interphase; and forming a consolidated fiber preform by treating the fiber preform by chemical vapor infiltration to form a consolidation phase on the interphase, the consolidation phase comprising silicon carbide and having a Young's modulus greater than or equal to 350 GPa. 1. A method of fabricating a CMC part , the method comprising:coating a plurality of tows with an interphase by transporting the tows through a treatment chamber in which a gas phase is injected, the tows being tensioned during their transport and the interphase being formed by vapor deposition from the injected gas phase;forming a fiber preform by performing three-dimensional weaving using the tows coated with the interphase; andforming a consolidated fiber preform by treating the fiber preform by chemical vapor infiltration to form a consolidation phase on the interphase, the consolidation phase comprising silicon carbide and having a Young's modulus greater than or equal to 350 GPa, a volume fraction of the consolidation phase lying in the range from 5% to 30%.2. The method according to claim 1 , wherein the consolidation phase has a Young's modulus greater than or equal to 375 GPa.3. The method according to claim 1 , wherein the residual volume porosity of the consolidated fiber preform lies in the range 25% to 45%.4. The method according to claim 1 , the method further comprising densifying the consolidated fiber preform by forming a silicon carbide matrix phase on the consolidation phase by infiltration with a molten composition comprising silicon claim 1 , and wherein carbon and/or ceramic ...

METHOD FOR MANUFACTURING A MULTILAYER DATA MEDIUM WITH REFLECTING METALLISED INSCRIPTIONS

Disclosed is a method for manufacturing a multilayer data medium having reflecting metallised inscriptions () visible from at least one outer surface (). A basic pattern () is imprinted onto a transparent impression layer (), the pattern being selected so as to be able to receive the inscriptions (), to be transparent and to have a surface tension of more than 40 dynes/cm and a smooth surface condition with specular reflection of more than 50% measured according to the ISO 2813 standard at an angle of 60°, and no glass-transition temperature in the rolling temperature range; then the inscriptions () are imprinted in contact with the basic pattern (), and then hot rolling under pressure of a stack including the impression layer () is carried out. 110231110. Method of manufacturing a multilayer data medium () by hot rolling under pressure of a stack of a plurality of superimposed layers comprising at least one layer of at least one thermoplastic material , said multilayer data medium having inscriptions , named reflecting metallised inscriptions () , having a metallic appearance , being at least partially reflective and visible from at least one outer surface () of said multilayer data medium () , said hot rolling being effected in a temperature range , named rolling temperature range , wherein:{'b': 22', '21', '24', '23, 'claim-text': a surface tension of more than 40 dynes/cm and a smooth surface condition with specular reflection of more than 50% measured according to the ISO 2813 standard at an angle of 60°,', 'no glass-transition temperature in the rolling temperature range,, 'one surface, named impression surface (), of at least one transparent layer, named impression layer (), of said stack is imprinted with a varnish composition in a pattern, named the basic pattern (), selected to be able to receive said reflecting metallised inscriptions (), said varnish composition being selected in order—after curing—to be transparent and to have{'b': 23', '24, 'said ...

METHOD FOR MANUFACTURING A PART MADE OF A COMPOSITE MATERIAL

A process for manufacturing a ceramic matrix composite part, includes infiltrating a fibrous structure including a powder composition with a melt infiltration composition including at least silicon in order to form a ceramic matrix in the porosity of the fibrous structure, the powder composition including at least silicon carbide particles, wherein the silicon carbide particles have a bimodal size distribution with a first set of silicon carbide particles having a first average size and a second set of silicon carbide particles having a second average size smaller than the first average size, the number of particles in the first set being greater than the number of particles in the second set. 1. A process for manufacturing a ceramic matrix composite part , comprising:infiltrating a fibrous structure comprising a powder composition with a melt infiltration composition comprising at least silicon in order to form a ceramic matrix in the porosity of the fibrous structure, the powder composition comprising at least silicon carbide particles,wherein the silicon carbide particles have a bimodal size distribution with a first set of silicon carbide particles having a first average size and a second set of silicon carbide particles having a second average size smaller than the first average size, the number of particles in the first set being greater than the number of particles in the second set,wherein the first average size is comprised between 1 μm and 5 μm, andwherein the second average size is comprised between 0.1 μm and 1 μm.2. The process as claimed in claim 1 , wherein the particles of the first set represent at least 60% by number of the total silicon carbide particles in the powder composition.3. (canceled)4. The process as claimed in claim 1 , wherein the particles of the second set represent at most 40% by number of the total silicon carbide particles in the powder composition.5. (canceled)6. The process as claimed in claim 1 , wherein the particles of the ...

AUTOMATED USAGE DRIVEN ENGINEERING

Implementations directed to providing a computer-implemented method for automating vehicle feature updates, the method being executed by one or more processors and comprising receiving telematics data identifying an actual usage of a vehicle; performing a gap analysis between the actual usage of the vehicle and an expected usage of the vehicle; determining a feature update based on the gap analysis; providing the feature update to a product engineering module when the feature cannot be implemented by a software update; and providing the feature update to an onboard computer system when the feature can be implemented by a software update. 120.-. (canceled)21. A computer-implemented method for automating vehicle feature updates , the method being executed by one or more processors and comprising:receiving telematics data identifying an actual usage of a first vehicle;automatically performing a gap analysis, using a gap analysis component, to determine a difference between the actual usage of the first vehicle and an expected usage of the first vehicle based at least in part on the telematics data;determining, using a configuration adjustment component, a plurality of feature updates that are implementable as software updates based at least in part on the difference between the actual usage of the first vehicle and the expected usage of the first vehicle;determining a selected feature update from the plurality of feature updates to provide to an onboard computer system of an active vehicle; andupdating a selected feature on the onboard computer system of the active vehicle using the selected feature update when the selected feature update can be implemented by a software update.22. The computer-implemented method of claim 21 , wherein the selected feature update is a modification to a software component of the vehicle.23. The computer-implemented method of claim 22 , wherein the software component is a display feature shown on an adaptable display in the vehicle.24. ...

PHARMACEUTICAL COMPOSITION, COMPRISING PHOSPHATE BINDER PARTICLES

The present invention relates to pharmaceutical composition, comprising certain phosphate binder particles having a certain particle size distribution, a process for the manufacture of the pharmaceutical composition and the use of sucroferric oxyhydroxide having a certain particle size distribution for the manufacture of a pharmaceutical composition. 1. A pharmaceutical composition for oral administration , comprising a phosphate binder , said phosphate binder comprises particles having a particle size distribution , wherein at least 40% of the particles have a particle size within the range of 4 to 200 μm , d50 is in the range of between 40 μm to 100 μm , and wherein the phosphate binder particles comprise a mixture of iron(III)-oxyhydroxide , sucrose and one or more starches.2. A pharmaceutical composition according to claim 1 , which comprises a mixture of starches.3. A pharmaceutical composition according to claim 1 , which Is a compressed tablet.4. A compressed tablet according to claim 3 , which contains sucroferric oxyhydroxide as phosphate binder particles claim 3 , and at least one further pharmaceutically acceptable excipient claim 3 , and wherein at least 40% claim 3 , or at least 60% claim 3 , or at least 80% claim 3 , or at least 90% of the particles in the phosphate binder particle size distribution in the tablet are between 4 to 200 μm claim 3 , or between 5 to 160 μm claim 3 , or between 21 to 160 μm.5. A compressed tablet according to claim 3 , which comprises sucroferric oxyhydroxide as phosphate binder particles claim 3 , and at least one further pharmaceutically acceptable excipient claim 3 , and wherein the phosphate binder particles have a particle size distribution with a d50 between 40 μm to 80 μm or between 42 μm to 75 μm.6. A compressed tablet according to claim 3 , wherein the phosphate binder particles have a particle size distribution with a d50 between 40 μm to 80 μm and wherein at least 60% claim 3 , or at least 80% of the particles of ...

SYSTEMS, DEVICES, AND METHODS EFFECTED IN RESPONSE TO ESTABLISHING AND/OR TERMINATING A PHYSICAL COMMUNICATIONS LINK

Systems, devices, and methods that are effected in or by an electronic device in response to establishing and/or terminating a physical communications link are described. An electronic device may be entered into deep sleep and may include a power control circuit that activates the device out of deep sleep in response to establishing a physical communications link with a source of electric power, such as another electronic device. Either in combination with or separate from this, an electronic device may establish wireless communications with another electronic device in response to establishing and terminating a physical communications link with the other electronic device. The physical communications link may be used to transfer device identity data from one device to the other and thereby bypass the cumbersome “discovery” process common to conventional wireless communication techniques. Portable electronic devices and personal computing devices that are operative to perform the above are described. 1. A method of establishing wireless communications between a first electronic device and a second electronic device , the method comprising:receiving by the second electronic device from the first electronic device, via a physical communications link between the first and the second electronic devices, a first identifier that identifies the first electronic device;in response to a termination of the physical communications link between the first and the second electronic devices, wirelessly transmitting by the second electronic device a request to initiate a wireless communications session, wherein the request to initiate a wireless communications session includes a representation of the first identifier that identifies the first electronic device; andestablishing the wireless communications session with the first electronic device by the second electronic device.2. The method of claim 1 , further comprising:transmitting electric power from the second electronic device ...

PART COATED WITH A SURFACE COATING AND ASSOCIATED METHODS

A part made of composite material includes fiber reinforcement densified by a ceramic matrix. The part presents an outside surface and is coated over at least a portion of its outside surface by a surface coating in solid form including an alloy of silicon and nickel presenting a content by weight of silicon lying in the range 29% to 45%, or an alloy of silicon and cobalt. 1. A part made of composite material comprising fiber reinforcement densified by a ceramic matrix , the part presenting an outside surface , wherein the part is coated over at least a portion of the outside surface by a surface coating in solid form comprising an alloy of silicon and nickel presenting a content by weight of silicon lying in the range 29% to 45% , or an alloy of silicon and cobalt.2. A part according to claim 1 , wherein the surface coating comprises a phase of NiSiand/or a phase of NiSi.3. A part according to claim 1 , wherein the surface coating comprises a phase of CoSi.4. A part according to claim 1 , wherein the alloy of silicon and nickel or of silicon and cobalt is present at a content by weight greater than or equal to 5% relative to a weight of the surface coating.5. A part according to claim 1 , wherein the surface coating further includes fillers and/or a ceramic material.6. A part according to claim 1 , wherein the alloy of silicon and cobalt presents a silicon content by weight lying in the range 34% to 90%.7. A part according to claim 1 , wherein the part constitutes an aeroengine blade comprising at least a blade root and an airfoil claim 1 , and wherein the surface coating covers at least the blade root.8. A turbine engine rotor wheel comprising:a wheel disk having a blade fastener portion, said fastener portion comprising an alloy including nickel and/or cobalt; and{'claim-ref': {'@idref': 'CLM-00007', 'claim 7'}, 'a part according to , fastened to the wheel disk, the blade root of the part being mounted in the blade fastener portion.'}9. A method of fabricating a ...

METHOD FOR THE BRAZING OF PARTS MADE FROM A COMPOSITE MATERIAL, INCORPORATING A SLUG IN THE BOND

A method of assembling together by brazing first and second parts made of composite material, each of the first and second parts having an assembly face for brazing with the assembly face of the other part, the method including making at least one perforation in the assembly face of the first part; interposing capillary elements between the assembly faces of the first and second parts made of composite material; placing the first and second parts facing each other while inserting a peg in each perforation of the first part; placing a brazing composition in contact with a portion of the capillary elements; and applying heat treatment to liquefy the brazing composition so as to cause the molten brazing composition to spread by capillarity between the assembly faces of the composite material parts. 1. A method of assembling together by brazing first and second parts made of composite material , each of the first and second parts having an assembly face for brazing with the assembly face of the other part , the method comprising:making at least one perforation in the assembly face of the first part;interposing capillary elements between the assembly faces of the first and second parts made of composite material;placing the first and second parts facing each other while inserting a peg in each perforation of the first part;placing a brazing composition in contact with a portion of the capillary elements; andapplying heat treatment to liquefy the brazing composition so as to cause the molten brazing composition to spread by capillarity between the assembly faces of the composite material parts.2. A method according to claim 1 , wherein clearance is provided between the inside wall of each perforation and the outside wall of the peg inserted in said perforation.3. A method according to claim 1 , wherein at least a first perforation is made in the assembly face of the first part and wherein a second perforation is made in the assembly face of the second part claim 1 , the ...

Method for the production of a multi-layer data medium with security inscriptions

Disclosed is a method for the production of a multi-layer data medium by the hot rolling under pressure of a plurality of superimposed layers ( 12 ) having security inscriptions. Marking rolling is carried out on at least one layer to be marked ( 12 a ) covered with a marking film ( 20, 21 ) bearing inscriptions ( 22 ) in vitrophany applied in contact with the layer to be marked, then the marking film is separated from the layer to be marked, the latter having the security inscriptions.

METHOD FOR BRAZING PARTS MADE FROM A COMPOSITE MATERIAL, WITH ANCHORING OF THE BRAZED JOINT

A method of assembling together by brazing two parts made of composite material, each part having an assembly face for brazing with the assembly face of the other part, the method including: making a plurality of cavities in the assembly face of at least one of the two composite material parts, at least some of the cavities opening out into one or more portions of the part that are situated outside the assembly face; interposing capillary elements between the assembly faces of the composite material parts; placing a brazing composition in contact with a portion of the capillary elements; and applying heat treatment to liquefy the brazing composition so as to cause the molten brazing composition to spread by capillarity between the assembly faces of the composite material parts. 1. A method of assembling together by brazing two parts made of composite material , each part having an assembly face for brazing with the assembly face of the other part , the method comprising:making a plurality of cavities in the assembly face of at least one of the two composite material parts, at least some of said cavities opening out into one or more portions of the part that are situated outside the assembly face;interposing capillary elements between the assembly faces of the composite material parts;placing a brazing composition in contact with a portion of the capillary elements; andapplying heat treatment to liquefy the brazing composition so as to cause the molten brazing composition to spread by capillarity between the assembly faces of the composite material parts.2. A method according to claim 1 , wherein a plurality of grooves are made in the assembly face of at least one of the two composite material parts claim 1 , at least some of said grooves opening out into one or more faces adjacent to the assembly face of the at least one of the two composite material parts.3. A method according to claim 1 , wherein a plurality of grooves are made in the assembly face of at least one ...

METHOD FOR MANUFACTURING A MULTILAYER DATA MEDIUM WITH SECURITY MARKING WHICH CAN BE MARKED BY LASER

The invention relates to a method for manufacturing a multi-layer data medium by hot rolling under pressure, able to be marked under the effect of laser radiation applied to at least one outer surface () of this medium, in which at least one marking () with optically variable effect is disposed with respect to a laser marking sub-layer so that said outer surface () has a portion with optically variable effect optically superimposed on at least one part of the laser marking sub-layer and a portion () without marking with optically variable effect optically superimposed on at least one part of the laser marking sub-layer. These portions are produced with contents of at least one marking agent which is sensitive to said laser radiation which are different. 114-. (canceled)16132020171816. Method according to claim 15 , wherein each marking () with optically variable effect is disposed with respect to the laser marking sub-layer () so that said laser marking sub-layer () extends facing at least one separation ( claim 15 , ) between the portion with optically variable effect and the portion () without marking with optically variable effect.1711. Method according to claim 15 , wherein said contents of at least one marking agent which is sensitive to said laser radiation are selected so that the laser marking obtained under the effect of said laser radiation claim 15 , as seen from said outer surface () claim 15 , is at least substantially homogeneous.18162122. Method according to claim 15 , wherein said portion () without marking with optically variable effect is without any marking agent which is sensitive to said laser radiation claim 15 , at least one marking agent which is sensitive to said laser radiation being incorporated into at least one covering layer ( claim 15 , ) only in said portion with optically variable effect.1921222122. Method according to claim 15 , wherein at least one covering layer ( claim 15 , ) incorporating at least one marking agent which is ...

Method of treating ceramic fibers by phosphating

A method of treating silicon carbide fibers comprises phosphating heat treatment in a reactive gas so as to form a coating around each fiber for protection against oxidation. The coating comprises a surface layer of silicon pyrophosphate crystals and at least one underlying bilayer system comprising a layer of a phosphosilicate glass and a layer of microporous carbon.

METHOD FOR MANUFACTURING A PART MADE FROM CMC

A process for manufacturing a part made of composite material with a matrix at least predominantly made of ceramic includes producing a fibrous structure by three-dimensional or multilayer weaving; shaping the fibrous structure to form a fibrous preform core; depositing an interphase on the fibers of the preform core; consolidating the preform core by partial densification of the core including the formation of a matrix phase by chemical vapor infiltration or by a liquid process; depositing a powder of ceramic particles in the porosity of the preform core; draping one or more layers of pre-impregnated non-woven fibers over all or part of the outer surface of the preform core; heat treatment of the preform core and of the pre-impregnated layer(s) to form a hybrid fibrous preform; further densifying by infiltration of the hybrid fibrous preform with an infiltration composition containing at least silicon to obtain a ceramic matrix composite part. 1. A process for manufacturing a part made of a composite material with a matrix at least predominantly made of ceramic , the process comprising:producing a fibrous structure by three-dimensional or multilayer weaving;shaping the fibrous structure to form a fibrous preform core;depositing an interphase on the fibers of the preform core;consolidating the preform core by partial densification of said core comprising the formation of a matrix phase by chemical vapor infiltration or by a liquid process;depositing a powder of ceramic particles in the porosity of the preform core;draping one or more layers of pre-impregnated non-woven fibers over all or part of the outer surface of the preform core;performing a heat treatment of the preform core and of the pre-impregnated layer(s) to form a hybrid fibrous preform;further densifying by infiltration of the hybrid fibrous preform with an infiltration composition containing at least silicon in order to obtain a ceramic matrix composite part.2. The process as claimed in claim 1 , ...

Method of locally treating a part made of porous composite material

A method of locally treating a portion of a part made of composite material including fiber reinforcement densified by a matrix, the material presenting internal pores, the method including: determining a quantity of infiltration composition as a function of a volume of the portion of the part to be treated, the infiltration composition including at least silicon; placing the determined quantity of infiltration composition in contact with pores opening out in a surface of the portion of the part to be treated; and applying heat treatment at a temperature higher than or equal to a melting temperature of the infiltration composition so as to impregnate the portion with the treatment composition and fill in the pores present in the portion.

METHOD FOR PRODUCING A HOLLOW PART MADE OF A CERAMIC MATRIX COMPOSITE MATERIAL

The invention relates to a method for producing a hollow part made of a ceramic matrix composite material comprising the steps of: 1. A method for producing a hollow part made of a ceramic matrix composite material comprising the steps of:shaping a hollow fibrous preform, a core made of an oxidizable material being housed or inserted into the preform;consolidating said preform; andextracting the core by oxidising said core.2. The method according to claim 1 , wherein the step of extracting the core by oxidising said core comprises the following sub-steps:heating the preform in which the core is inserted, in a furnace under an oxidising atmosphere; andmechanically removing the oxidised core.3. The method according to claim 2 , wherein said heating is carried out in the presence of a catalyst.4. The method according to claim 2 , wherein said heating is carried out at a temperature ranging from 400° C. to 800° C.5. The method according to claim 2 , wherein said heating comprises:a first heating cycle lasting between 20 hrs and 30 hrs; anda second heating cycle lasting between 10 hrs and 15 hrs.6. The method according to claim 1 , wherein the oxidizable core is made of carbon claim 1 , graphite or other material derived from carbon.7. The method according to claim 1 , wherein the hollow fibrous preform is made by draping or assembling fibrous textures around the core claim 1 , or by weaving a preform having a hollow area for insertion of the core.8. The method according to claim 1 , wherein said consolidation of the preform comprises the sub-steps of:creating at least one interphase on the fibres of the fibrous preform by chemical vapour infiltration; andcreating at least one ceramic matrix layer on the interphase by chemical vapour infiltration.9. The method according to claim 1 , wherein the step of extracting the core by oxidation is followed by a step of densification of the preform comprising:the introduction of a metal powder into the preform; andthe infiltration ...

Method for manufacturing a data medium and data medium thus obtained

Disclosed is a method for manufacturing a multilayer data medium ( 1 ), in which method: a multilayer data medium, including at least one transparent security layer ( 16 ), and at least one marking layer ( 17 ), sensitive to electromagnetic-marking radiation ( 5 ), are selected; the transparent security layer ( 16 ) includes at least one semi-transparent printed image including at least one thermochromic dye; at least one marking ( 30 ) is made using the electromagnetic-marking radiation, through the printed image; the semi-transparent printed image reveals, in a first state referred to as the inactivated state, at least one semi-transparent visible pattern that makes it possible, after the marking step, to view the marking ( 30 ) through the image, the pattern not being visible in a second state, referred to as the activated state. The invention also relates to a multilayer data medium ( 1 ).

METHOD FOR PRODUCING A CURVED HONEYCOMB STRUCTURE MADE FROM COMPOSITE MATERIAL

A method of fabricating a curved cellular structure includes making an expandable fiber structure by multilayer weaving between layers of warp yarns and layers of weft yarns, the structure having zones of non-interlinking extending in the thickness of the structure, the non-interlinking zones spaced apart from one another by portions of interlinking between layers of weft yarns, the portions of interlinking offset by one or more weft yarns in a direction parallel to the direction of the layers of weft yarns between each series of these planes; impregnating the fiber structure with a resin; expanding the fiber structure on support tooling to form a cell in the fiber structure at each zone of non-interlinking, the tooling also presenting a curved shape corresponding to the shape of the cellular structure that is to be fabricated; and polymerizing the resin of the fiber structure to form a curved cellular structure. 1. A method of fabricating a curved cellular structure , the method comprising:making an expandable fiber structure having zones of non-interlinking extending in a thickness of the fiber structure, the zones of non-interlinking being spaced apart from one another by portions of interlinking;impregnating the fiber structure with a resin that is a precursor for a determined material;expanding the fiber structure on a support tooling so as to form a cell in the fiber structure at each zone of non-interlinking, the support tooling presenting a curved shape corresponding to the shape of the cellular structure that is to be fabricated; andpolymerizing the resin of the fiber structure so as to form a curved cellular structure having a plurality of cells;wherein the fiber structure is made by multilayer weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns, repeating a series of successive weave planes, each having portions of interlinking in which at least one warp yarn interlinks weft yarns from at least two adjacent layers ...

METHOD FOR THE PRODUCTION OF A PART MADE FROM A COMPOSITE MATERIAL, BY MEANS OF THE INJECTION OF POWDER INTO A FIBROUS REINFORCEMENT WITH DRAINAGE THROUGH A COMPOSITE FILTRATION LAYER

A process for manufacturing a composite material part includes formation of a fibrous texture from refractory ceramic fibres, placement of the fibrous texture in a mould with interposition of a filtration layer between the fibrous texture and a discharge port, the filtration layer including a partially densified fibrous structure, pressure injection of a slurry containing a powder of refractory ceramic particles into the fibrous texture, drainage by the filtration layer of the slurry solvent having passed through the fibrous texture and retention of the powder of refractory ceramic particles within the texture by the filtration layer to obtain a fibrous preform including the fibrous texture filled with refractory ceramic particles and the filtration layer, heat treatment of the refractory ceramic particles present in the fibrous texture of the preform to form a composite material part including the fibrous texture densified by a refractory ceramic matrix and the filtration layer. 1. A process for manufacturing a composite material part comprising:forming a fibrous texture from refractory ceramic fibres,placing the fibrous texture in a mould having at least one injection port and at least one evacuation port, a filtration layer being interposed between the fibrous texture and said at least one evacuation port, the filtration layer comprising a partially densified fibrous structure,pressure injecting a slurry containing a powder of refractory ceramic particles into the fibrous texture,draining by the filtration layer the solvent of the slurry having passed through the fibrous texture and retaining the powder of refractory ceramic particles within said texture by the filtration layer so as to obtain a fibrous preform comprising at least the fibrous texture filled with refractory ceramic particles and the filtration layer, the solvent being discharged through said at least one discharge port,heat treating the refractory ceramic particles present in the fibrous texture ...

RESILIENT IN-BAND MOBILE CORE USER PLANE FUNCTION SELECTION USING SEGMENT ROUTING LOAD BALANCING

A user plane selection mechanism is provided that leverages an in-band load balancing scheme, e.g., Segment Routing Load Balancing (SRLB). Information in the form of segment identifiers (complemented by metadata) is passed to the components. As a result, the effective user plane function selection can be done in-band at the transport level. 1. A method comprising: obtaining a new session request to invoke a user plane function for a session on behalf of a mobile user equipment;', 'selecting, from a pool of user plane function entities, a set of user plane function entities that are capable of serving the user plane function, the set including at least two user plane function entities;', 'generating a new session notification that includes a segment routing header that includes a segment identifier for each of the at least two user plane function entities to indicate the set of user plane function entities, wherein the new session notification is to be received by a first user plane function entity in the set such that the first user plane function entity serves the session if it can serve the session, and otherwise the first user plane function entity forwards the new session notification to another user plane function entity in the set, and so on, until one of the user plane function entities in the set can serve the session, thereby achieving in-band load balancing among the user plane function entities in the set resulting in a selected user plane function entity to serve the session; and', 'obtaining a response from the selected user plane function entity in the set that serves the session, the response including an identifier of the selected user plane function entity that serves the session and an Internet Protocol (IP) address allocated for the session., 'at a session management function entity in a mobile core infrastructure network2. The method of claim 1 , wherein the IP address allocated for the session is selected from an available pool of IP address by ...

Process for protecting a document, protective device comprising an adhesive layer and document

The invention relates to a process for protecting variable inscriptions of a document in which: a transparent film is bonded to a face of said document with a view to protecting variable inscriptions of said document, by at least one adhesive layer comprising at least one thermoplastic polymer having a glass transition temperature between 40° C. and 110° C. and having a hydroxyl value between 3 mg of KOH/g and 60 mg of KOH/g and/or an acid value between 2 mg of KOH/g and 150 mg of KOH/g, said adhesive layer comprises a crosslinking agent having at least 2.8 functions selected from the group formed of isocyanates, carbodiimides, aziridines and alkoxysilanes, during the bonding, a crosslinking of said adhesive layer is carried out. The invention also relates to a protective device and to a document.

PROCESS FOR MANUFACTURING A PIECE OF THERMOSTRUCTURAL COMPOSITE MATERIAL

Method for locally treating a part made from porous composite material

A method for locally treating a portion (130) of a part (100) made from composite material comprising a fibrous reinforcement densified by a matrix, said material having internal porosity. The method comprises the following steps: - defining a quantity of infiltration composition (10) on the basis of the volume of the portion (130) of the part to be treated (100), the infiltration composition (10) comprising at least silicon, - placing the defined quantity of infiltration composition (10) in contact with the portion (130) of the part to be treated, - heat treating at a temperature greater than or equal to the melting temperature of the infiltration composition in such a way as to impregnate said portion with the treatment composition.

PROCESS FOR MANUFACTURING A PART OF COMPOSITE MATERIAL

L'invention concerne un procédé de fabrication d'une pièce en matériau composite à matrice céramique, comprenant au moins : - l'infiltration d'une structure fibreuse comprenant une composition pulvérulente par une composition d'infiltration à l'état fondu comprenant au moins du silicium afin de former une matrice céramique dans la porosité de la structure fibreuse, la composition pulvérulente comprenant au moins des particules de carbure de silicium, dans lequel les particules de carbure de silicium présentent une distribution de taille bimodale avec un premier ensemble (E1) de particules de carbure de silicium présentant une première taille moyenne (TM1) et un deuxième ensemble (E2) de particules de carbure de silicium présentant une deuxième taille moyenne (TM2) inférieure à la première taille moyenne, le nombre de particules du premier ensemble étant supérieur au nombre de particules du deuxième ensemble.

METHOD FOR MANUFACTURING ALVEOLAR STRUCTURE OF CURVED SHAPE IN COMPOSITE MATERIAL

METHOD AND DEVICE FOR SECURELY PROTECTING OFFICIAL DOCUMENTS USING SINGLE THERMOPLASTIC CONTINUOUS CONTINUOUS TRANSPARENT FILM

Playing marker for casino

The marker has a body (10) formed of laminated plastics which forms a sandwich structure with at least three layers formed of one or more sheets. It has a central layer (14,30) and two side layers (20,22) having a decoration. A recess receives at least one insert (16,46) which is distinct from the central layer.

METHOD OF BRAZING PARTS OF COMPOSITE MATERIAL WITH ANCHORING OF THE BRAZE JOINT

METHOD AND DEVICE FOR SECURELY PROTECTING AN OFFICIAL DOCUMENT AND OFFICIAL DOCUMENT SO PROTECTED

L'invention concerne un procédé de protection sécuritaire d'une portion de surface d'un document officiel portant des inscriptions, dans lequel : - on choisit un dispositif de protection dont le film (16) de sécurité transparent comprend au moins une image imprimée semi-transparente comprenant au moins un liant transparent et au moins un pigment thermochromique, - ladite image imprimée semi-transparente fait apparaitre dans un premier état non activé, à au moins une première température, au moins un motif visible semi-transparent de façon à permettre la visualisation des inscriptions à travers cette image, ledit motif n'étant pas visible dans un second activé, à au moins une deuxième température différente de la première température. L'invention concerne également un tel dispositif de protection sécuritaire d'une portion de surface d'un document officiel et un document officiel comprenant un tel dispositif.

METHOD FOR MANUFACTURING A LOBE STRUCTURE OF CMC FLUX MIXER FOR AERONAUTICAL GAS TURBINE ENGINE.

PROCESS FOR MANUFACTURING A COMPOSITE MATERIAL PART WITH IMPROVED INTRA-WIRE DENSIFICATION

PROCESS FOR MANUFACTURING A COMPOSITE MATERIAL PART BY HIGH-TEMPERATURE SELF-CARRIED REACTION SYNTHESIS

L'invention concerne un procédé de fabrication d'une pièce en matériau composite à matrice céramique comportant l'étape suivante : a) fabrication de la pièce par formation d'une matrice céramique dans la porosité d'une structure fibreuse, la matrice céramique étant formée par synthèse par réaction auto-entretenue à haute température à partir d'une composition pulvérulente présente dans la porosité de la structure fibreuse. The invention relates to a method of manufacturing a piece of ceramic matrix composite material comprising the following step: a) manufacture of the part by forming a ceramic matrix in the porosity of a fibrous structure, the ceramic matrix being formed by high temperature self-sustained reaction synthesis from a powder composition present in the porosity of the fibrous structure.

METHOD FOR MANUFACTURING A DATA CARRIER AND DATA CARRIER THUS OBTAINED

L'invention concerne un procédé de fabrication d'un support (1) de données multicouche dans lequel : - on choisit un support de données multicouche comprenant au moins une couche (16) de sécurité transparente et au moins une couche (17) de marquage, sensible à un rayonnement (5) électromagnétique de marquage, - ladite couche (16) de sécurité transparente comprend au moins une image imprimée semi-transparente comprenant au moins un pigment thermochromique, - on réalise au moins une marque (30) à l'aide dudit rayonnement électromagnétique de marquage, au travers de ladite image imprimée, - ladite image imprimée semi-transparente fait apparaitre dans un premier état, dit état non activé, au moins un motif visible semi-transparent permettant, après ladite étape de marquage, la visualisation de ladite marque (30) à travers cette image, ledit motif n'étant pas visible dans un second état, dit état activé. L'invention concerne également un support (1) de données multicouche.

METHOD OF MANUFACTURING A CURVED SHAPE ACOUSTICAL ATTENUATION PANEL

THERMOSTRUCTURAL COMPOSITE MATERIAL PIECE OF LOW THICKNESS AND MANUFACTURING METHOD THEREFOR.

SYSTEM FOR ATTACHING AND ADJUSTING A LIGHT DEVICE, PARTICULARLY A PROJECTOR, PARTICULARLY FOR A MOTOR VEHICLE

Fibrous structure for reinforcing composite material parts of variable thickness

Structure fibreuse de renfort de pièces en matériau composite à épaisseur variable Une structure fibreuse de renfort de pièce en matériau composite tissée en une seule pièce par tissage tridimensionnel ou multicouche entre une pluralité de couches de fils de trame (202) et une pluralité de couches de fils de chaîne (201). La structure fibreuse comprend suivant une direction transversale (DT) : - des première et deuxième portions (210, 211) dans chacune desquelles toutes les couches de fils de chaîne (201) sont liées entre elles par des fils de trame (202) de la pluralité de couches de fils de trame, les première et deuxième portions formant respectivement des premier et deuxième bords longitudinaux de la structure fibreuse, et - une troisième portion (212) présente entre les première et deuxième portions (210, 211), la troisième portion comprenant une zone de déliaison (214) délimitant un logement (220) à l’intérieur de la structure fibreuse (200) s’étendant sur une distance déterminée suivant la direction longitudinale (DC) et suivant la direction transversale (DT). La zone de déliaison sépare une première peau (221) d’une deuxième peau (222), chacune des peaux comprenant une partie de couches de fils de chaîne liées entre elles par des fils de trame de la pluralité de fils de trame. Des torons (230, 231, 232) s’étendent dans le logement (220) suivant la direction longitudinale (DC), les torons ayant une taille supérieure ou égale à la taille des fils de chaîne (201) de la pluralité de couches de fils de chaîne de manière à conférer à la troisième portion (212) une épaisseur supérieure à l’épaisseur des première et deuxième portions. Figure pour l’abrégé : Fig. 2. Fiber Structure for Reinforcement of Composite Material Parts of Variable Thickness A fiber structure for reinforcement of composite material parts woven in a single piece by three-dimensional or multi-layered weaving between a plurality of layers of weft yarns (202) and a plurality of layers of weft ...

PROCESS FOR MANUFACTURING A COMPOSITE MATERIAL PART WITH IMPROVED INTRA-WIRE DENSIFICATION

Procédé de fabrication d'une pièce en matériau composite comprenant un renfort fibreux densifié par une matrice, ledit procédé comprenant les étapes suivantes : - réalisation d'une texture fibreuse (10) par tissage de fils, ladite texture fibreuse présentant un taux moyen initial de fibres déterminé, - densification de la texture fibreuse par une matrice. Conformément à l'invention, la texture fibreuse (10) est soumise, avant densification, à un fluide sous pression (120) de manière à réduire le taux moyen de fibres dans la texture à une valeur comprise entre 20% et 45%.

SURFACE COATING-COATED PIECE AND RELATED METHODS

PROCESS FOR TREATING CERAMIC FIBERS

GAME PLATE WITH LAMINATE STRUCTURE

METHOD FOR MANUFACTURING PIECE OF COMPOSITE MATERIAL WITH CERAMIC MATRIX AND PART THUS OBTAINED

Patent FR2678780B1

DOCUMENT COMPRISING AT LEAST TWO PHOTOLUMINESCENT IMAGES, SECURITY FILM AND SECURITY PROTECTION METHOD

PROCESS FOR MANUFACTURING A PIECE OF COMPOSITE MATERIAL

L'invention concerne un procédé de fabrication d'une pièce en matériau composite à matrice céramique, comprenant au moins : - l'infiltration d'une structure fibreuse comprenant une composition pulvérulente par une composition d'infiltration à l'état fondu comprenant au moins du silicium afin de former une matrice céramique dans la porosité de la structure fibreuse, la composition pulvérulente comprenant au moins des particules de carbure de silicium, dans lequel les particules de carbure de silicium présentent une distribution de taille bimodale avec un premier ensemble (E1) de particules de carbure de silicium présentant une première taille moyenne (TM1) et un deuxième ensemble (E2) de particules de carbure de silicium présentant une deuxième taille moyenne (TM2) inférieure à la première taille moyenne, le nombre de particules du premier ensemble étant supérieur au nombre de particules du deuxième ensemble. The invention relates to a method for manufacturing a piece of ceramic matrix composite material, comprising at least: infiltration of a fibrous structure comprising a powdery composition with a melt infiltration composition comprising at least silicon to form a ceramic matrix in the porosity of the fibrous structure, the powder composition comprising at least silicon carbide particles, wherein the silicon carbide particles have a bimodal size distribution with a first set (E1) of silicon carbide particles having a first average size (TM1) and a second set (E2) of silicon carbide particles having a second average size (TM2) less than the first average size, the number of particles of the first set being greater than the number of particles in the second set.

METHOD FOR MAKING AN IRIDESCENT IRISHED POLYCHROMATIC TRANSPARENT IMAGE

INTEGRATION OF REAR BODY PARTS OF AERONAUTICAL MOTOR

COMPOSITE MATERIAL REALIZATION OF A FLOW MIXER LOBE STRUCTURE

L'invention concerne la réalisation en matériau composite d'une structure à lobes de mélangeur (10) qui comprend une partie ayant une pluralité de lobes (17,19). Pour cela, on va réaliser une préforme fibreuse contenant une résine, dans une configuration géométrique simple de révolution développable. Ceci constitue un état intermédiaire. Par exploitation du caractère thermoformable ou thermodurcissable de la résine, on modifie la géométrie de cette préforme intermédiaire pour la déformer avec des décadrages limités vers la géométrie finale. The invention relates to the production of a composite material of a mixer lobe structure (10) which comprises a part having a plurality of lobes (17,19). For this, we will produce a fiber preform containing a resin, in a simple geometric configuration of developable revolution. This constitutes an intermediate state. By exploiting the thermoformable or thermosetting nature of the resin, the geometry of this intermediate preform is modified in order to deform it with limited offsets towards the final geometry.

CASE FOR GAME TOKENS

SYSTEM FOR FIXING AND ADJUSTING A LUMINOUS DEVICE, ESPECIALLY A PROJECTOR, IN PARTICULAR FOR A MOTOR VEHICLE

Le système de fixation et de réglage, du projecteur 1 de véhicule automobile, comporte un support 10 fixé au projecteur 1 et sur lequel est montée libre en rotation une vis de réglage 13 qui entraîne ledit support 10 en translation par rapport à un chariot 15 en appui élastique contre un élément de carrosserie 21. Selon l'invention, le support 10 est constitué d'une plaque comportant au moins une lumière 26 apte à s'engager sur un point d'ancrage correspondant 27 ménagé sur le projecteur 1, et au moins une languette de verrouillage 30, immobilisant la plaque support 10 en s'insérant entre un bras 23 de la plaque support 10 et un étrier 28 du dispositif lumineux, dans lequel est logé ledit bras 23.

PROCESS FOR THE MANUFACTURE OF A PART OF COMPOSITE MATERIAL BY INJECTION OF A BARBOTINE LOADED IN A FIBROUS TEXTURE

L'invention concerne un procédé de fabrication d'une pièce en matériau composite comprenant les étapes suivantes : - disposition d'une préforme (3) fibreuse dans un moule (2) comprenant une chambre d'imprégnation (21) qui comprend dans sa partie inférieure un filtre en faisant reposer une première face de la préforme (3) sur ledit filtre, la chambre d'imprégnation (21) étant fermée par une membrane (23) souple placée en regard d'une deuxième face de la préforme (3), ladite membrane (23) séparant la chambre d'imprégnation (21) d'une chambre de compaction (22) ; caractérisé en ce que le procédé comprend en outre les étapes suivantes : - injection d'un fluide de compression dans la chambre de compaction (22) de manière à appliquer une première pression sur la membrane (23) ; - injection d'une barbotine comprenant des particules céramiques dans la chambre d'imprégnation (21) avec une deuxième pression tout en maintenant l'injection du fluide de compression, la deuxième pression d'injection de la barbotine étant inférieure à la première pression sur la membrane (23). The invention relates to a method for manufacturing a piece of composite material comprising the following steps: - provision of a fibrous preform (3) in a mold (2) comprising an impregnation chamber (21) which comprises in its part lower a filter by resting a first face of the preform (3) on said filter, the impregnation chamber (21) being closed by a flexible membrane (23) placed opposite a second face of the preform (3) , said membrane (23) separating the impregnation chamber (21) from a compaction chamber (22); characterized in that the method further comprises the following steps: - injection of a compression fluid into the compaction chamber (22) so as to apply a first pressure to the membrane (23); injection of a slip comprising ceramic particles into the impregnation chamber (21) with a second pressure while maintaining the injection of the ...

Method of manufacturing a ring sector

L’invention concerne une structure fibreuse (20) multicouches tissée tridimensionnellement présentant un même nombre de fils de chaîne tissés à tout niveau le long de la direction chaîne, la structure fibreuse (20) comprenant, en direction chaîne, une première partie (22) et une seconde partie (24), la première partie (22) ayant une épaisseur, mesurée dans une direction perpendiculaire aux directions chaîne et trame, supérieure à la deuxième partie (24), caractérisée en ce que, l’écartement entre deux plans de trame le long de la direction chaîne est supérieur dans la deuxième partie à celui de la première partie (22), et en ce que le nombre de fil de trame est inférieur dans la deuxième partie (24) à celui de la première partie (22). Figure à publier avec l’abrégé : Figure 4 The invention relates to a three-dimensionally woven multilayer fibrous structure (20) having the same number of woven warp threads at any level along the warp direction, the fibrous structure (20) comprising, in the warp direction, a first part (22) and a second part (24), the first part (22) having a thickness, measured in a direction perpendicular to the warp and weft directions, greater than the second part (24), characterized in that the spacing between two planes of weft along the warp direction is greater in the second part than that of the first part (22), and in that the number of weft threads is lower in the second part (24) than that of the first part (22 ). Figure to be published with abstract: Figure 4

METHOD FOR MANUFACTURING A PART OF COMPOSITE MATERIAL BY INJECTING POWDER IN A FIBROUS REINFORCEMENT WITH DRAINAGE BY COMPOSITE FILTRATION STRATE

Un procédé de fabrication d'une pièce en matériau composite comprend les étapes suivantes : - formation d'une texture fibreuse (10) à partir de fibres céramiques réfractaires, - placement de la texture fibreuse (10) dans un moule (110) avec interposition d'une strate de filtration (130) entre la texture fibreuse et un port d'évacuation (112), la strate de filtration (130) comprenant une structure fibreuse partiellement densifiée, - injection sous pression d'une barbotine (150) contenant une poudre de particules céramiques réfractaires (1500) dans la texture fibreuse (10), - drainage par la strate de filtration (130) du solvant de la barbotine ayant traversé la texture fibreuse (10) et rétention de la poudre de particules céramiques réfractaires à l'intérieur de la texture par la strate de filtration (130) de manière à obtenir une préforme fibreuse comprenant au moins la texture fibreuse (10) chargée de particules céramiques réfractaires (1500) et la strate de filtration (130), - traitement thermique des particules céramiques réfractaires (1500) présentes dans la texture fibreuse (10) de la préforme afin de former une pièce en matériau composite comprenant au moins la texture fibreuse densifiée par une matrice céramique réfractaire et la strate de filtration. A method for manufacturing a composite material part comprises the following steps: - forming a fibrous texture (10) from refractory ceramic fibers, - placing the fibrous texture (10) in a mold (110) with interposition of a filtration stratum (130) between the fibrous texture and an evacuation port (112), the filtration stratum (130) comprising a partially densified fibrous structure, - injection under pressure of a slip (150) containing a powder of refractory ceramic particles (1500) in the fibrous texture (10), - drainage by the filtration stratum (130) of the solvent of the slurry having passed through the fibrous texture (10) and retention of the powder of refractory ceramic particles ...

PROCESS FOR MANUFACTURING A COMPOSITE MATERIAL PART BY INJECTING A BARBOTIN CHARGED WITH FIBROUS TEXTURE

L'invention concerne un procédé de fabrication d'une pièce en matériau composite comprenant les étapes suivantes : - disposition d'une préforme (3) fibreuse dans un moule (2) comprenant une chambre d'imprégnation (21) qui comprend dans sa partie inférieure un filtre en faisant reposer une première face de la préforme (3) sur ledit filtre, la chambre d'imprégnation (21) étant fermée par une membrane (23) souple placée en regard d'une deuxième face de la préforme (3), ladite membrane (23) séparant la chambre d'imprégnation (21) d'une chambre de compaction (22) ; caractérisé en ce que le procédé comprend en outre les étapes suivantes : - injection d'un fluide de compression dans la chambre de compaction (22) de manière à appliquer une première pression sur la membrane (23) ; - injection d'une barbotine comprenant des particules céramiques dans la chambre d'imprégnation (21) avec une deuxième pression tout en maintenant l'injection du fluide de compression, la deuxième pression d'injection de la barbotine étant inférieure à la première pression sur la membrane (23). The invention relates to a method for manufacturing a composite material part comprising the following steps: - provision of a fibrous preform (3) in a mold (2) comprising an impregnation chamber (21) which comprises in its part lowering a filter by resting a first face of the preform (3) on said filter, the impregnation chamber (21) being closed by a flexible membrane (23) placed facing a second face of the preform (3) said membrane (23) separating the impregnation chamber (21) from a compaction chamber (22); characterized in that the method further comprises the steps of: - injecting a compression fluid into the compaction chamber (22) so as to apply a first pressure on the membrane (23); - Injection of a slip comprising ceramic particles in the impregnation chamber (21) with a second pressure while maintaining the injection of the compression fluid, the ...

PRODUCTION IN COMPOSITE MATERIAL OF A LOBE STRUCTURE OF FLOW MIXER

L'invention concerne la réalisation en matériau composite d'une structure à lobes de mélangeur (10) qui comprend une partie ayant une pluralité de lobes (17,19). Pour cela, on va réaliser une préforme fibreuse contenant une résine, dans une configuration géométrique simple de révolution développable. Ceci constitue un état intermédiaire. Par exploitation du caractère thermoformable ou thermodurcissable de la résine, on modifie la géométrie de cette préforme intermédiaire pour la déformer avec des décadrages limités vers la géométrie finale. The invention relates to the composite material construction of a mixer lobe structure (10) comprising a portion having a plurality of lobes (17, 19). For this, we will make a fiber preform containing a resin in a simple geometric configuration of developable revolution. This constitutes an intermediate state. By exploiting the thermoformable or thermosetting nature of the resin, the geometry of this intermediate preform is modified to deform it with limited decadrations towards the final geometry.

PROCESS FOR MANUFACTURING A LASER-MARKED, SAFETY MARKING MULTILAYER DATA MEDIUM

Fiber structure for reinforcing composite material parts of varying thickness

Structure fibreuse de renfort de pièces en matériau composite à épaisseur variable Une structure fibreuse de renfort de pièce en matériau composite tissée en une seule pièce par tissage tridimensionnel ou multicouche entre une pluralité de couches de fils de trame (202) et une pluralité de couches de fils de chaîne (201). La structure fibreuse comprend suivant une direction transversale (DT) : - des première et deuxième portions (210, 211) dans chacune desquelles toutes les couches de fils de chaîne (201) sont liées entre elles par des fils de trame (202) de la pluralité de couches de fils de trame, les première et deuxième portions formant respectivement des premier et deuxième bords longitudinaux de la structure fibreuse, et - une troisième portion (212) présente entre les première et deuxième portions (210, 211), la troisième portion comprenant une zone de déliaison (214) délimitant un logement (220) à l’intérieur de la structure fibreuse (200) s’étendant sur une distance déterminée suivant la direction longitudinale (DC) et suivant la direction transversale (DT). La zone de déliaison sépare une première peau (221) d’une deuxième peau (222), chacune des peaux comprenant une partie de couches de fils de chaîne liées entre elles par des fils de trame de la pluralité de fils de trame. Des torons (230, 231, 232) s’étendent dans le logement (220) suivant la direction longitudinale (DC), les torons ayant une taille supérieure ou égale à la taille des fils de chaîne (201) de la pluralité de couches de fils de chaîne de manière à conférer à la troisième portion (212) une épaisseur supérieure à l’épaisseur des première et deuxième portions. Figure pour l’abrégé : Fig. 2. Fiber Structure for Reinforcement of Composite Material Parts of Variable Thickness A fiber structure for reinforcement of composite material parts woven in a single piece by three-dimensional or multi-layered weaving between a plurality of layers of weft yarns (202) and a plurality of layers of weft ...

GAME MARKING PLATE

Tooling and method of manufacturing a composite material part by liquid

Outillage et procédé de fabrication d’une pièce en matériau composite par voie liquide L’invention concerne un outillage (1) pour la fabrication d’une pièce en matériau composite à matrice céramique par injection d’une barbotine, ledit outillage (1) comprenant une chambre d’injection (2) destinée à recevoir au moins une préforme fibreuse à densifier, caractérisé en ce que : - la chambre d’injection (2) comprend une pluralité de premiers orifices d’injection (23a) qui sont formés dans une première face (21) de ladite chambre d’injection (2) pour l’injection de la barbotine à l’intérieur de la chambre d’injection (2), lesdits premiers orifices d’injection (23a) étant répartis le long de la première face (21) de la chambre d’injection (2) ; - la chambre d’injection (2) comprend une pluralité de premiers orifices de drainage (24a) qui sont formés sur la première face (21) de ladite chambre d’injection (2) pour le drainage d’une phase liquide de la barbotine hors de la chambre d’injection (2), lesdits premiers orifices de drainage (24a) étant répartis le long de la première face (21) de la chambre d’injection (2) ; et - l’outillage (1) comprend un premier élément de filtration (4) qui est situé sur la première face (21) de ladite chambre d’injection (2) et qui est situé en face des premiers orifices de drainage (24a). Figure pour l’abrégé : Fig. 1a. Tooling and process for manufacturing a composite material part by liquid process The invention relates to a tool (1) for manufacturing a composite material part with a ceramic matrix by injecting a slip, said an injection chamber (2) intended to receive at least one fibrous preform to be densified, characterized in that: - the injection chamber (2) comprises a plurality of first injection orifices (23a) which are formed in a first face (21) of said injection chamber (2) for injecting the slip inside the injection chamber (2), said first injection orifices (23a) being distributed along the first face (21) of the injection ...

METHOD OF BRAZING PARTS IN COMPOSITE MATERIAL WITH INTEGRATION OF A PIONEER IN THE CONNECTION

PROCESS FOR LOCALLY PROCESSING A PIECE OF POROUS COMPOSITE MATERIAL

Method of manufacturing a ring sector

L’invention concerne une structure fibreuse (20) multicouches tissée tridimensionnellement présentant un même nombre de fils de chaîne tissés à tout niveau le long de la direction chaîne, la structure fibreuse (20) comprenant, en direction chaîne, une première partie (22) et une seconde partie (24), la première partie (22) ayant une épaisseur, mesurée dans une direction perpendiculaire aux directions chaîne et trame, supérieure à la deuxième partie (24), caractérisée en ce que, l’écartement entre deux plans de trame le long de la direction chaîne est supérieur dans la deuxième partie à celui de la première partie (22), et en ce que le nombre de fil de trame est inférieur dans la deuxième partie (24) à celui de la première partie (22). Figure à publier avec l’abrégé : Figure 4 The invention relates to a three-dimensionally woven multi-layered fiber structure (20) having the same number of warp threads woven at all levels along the warp direction, the fiber structure (20) comprising, in the warp direction, a first part (22). and a second part (24), the first part (22) having a thickness, measured in a direction perpendicular to the warp and weft directions, greater than the second part (24), characterized in that the spacing between two planes of weft along the warp direction is greater in the second part than that of the first part (22), and in that the number of weft threads is less in the second part (24) than that of the first part (22 ). Figure to be published with the abstract: Figure 4

GAME TOKEN AND METHOD FOR MARKING SUCH A TOKEN

METHOD FOR TAMPOGRAPHIC MARKING OF A GAME TOKEN AND DEVICE FOR IMPLEMENTING THE METHOD

PROCESS FOR PRODUCING A BOWL OF THERMOSTRUCTURAL COMPOSITE MATERIAL, IN PARTICULAR FOR A SINGLE CRYSTAL SILICON PRODUCTION INSTALLATION

METHOD FOR MANUFACTURING A DATA CARRIER AND DATA CARRIER THUS OBTAINED

SET FOR A TURBOMACHINE EJECTION TUBE

L'invention concerne un ensemble (4) pour une tuyère d'éjection (1) de turbomachine, comportant une virole annulaire radialement externe (5), destinée à délimiter une veine d'écoulement des gaz, une âme (6) comportant des alvéoles et montée radialement à l'intérieur de la virole (5), et une peau radialement interne (7) située radialement à l'intérieur de l'âme (6), caractérisé en ce que la peau radialement interne (7) est fixée par collage sur une surface radialement interne de l'âme (6), ladite peau (7) et/ou une surface radialement externe de l'âme (6) étant fixées par collage à la virole radialement externe (5). The invention relates to an assembly (4) for a turbomachine ejection nozzle (1), comprising a radially outer annular shell (5), intended to delimit a gas flow stream, a core (6) comprising cells and mounted radially inside the shell (5), and a radially internal skin (7) located radially inside the core (6), characterized in that the radially internal skin (7) is fixed by bonding to a radially inner surface of the core (6), said skin (7) and / or a radially outer surface of the core (6) being fixed by bonding to the radially outer shell (5).

METHOD FOR MAKING AN IRIDESCENT IRISHED POLYCHROMATIC TRANSPARENT IMAGE

L'invention concerne un procédé de réalisation d'une image (8) transparente polychromatique imprimée iridescente quelconque dont au moins deux couleurs changent simultanément lors d'un changement d'angle de vue de ladite image sous éclairage par au moins une source de lumière visible. The invention relates to a method for producing an iridescent printed polychromatic transparent image (8) of which at least two colors change simultaneously during a change of angle of view of said image under illumination by at least one visible light source. .

TOOLS FOR MAINTENANCE, LOADING AND INSTALLATION FOR THE DENSIFICATION OF POROUS REVOLUTION PREFORMS

Playing tile for games

The tile has a plastics laminate to form a flat sandwich (29) with at least five layers. It has a central layer (12), two lateral layers (13,14) with decoration on them and two transparent cover layers which can have impressions in them. At least one of the decorative layers is formed by marquetry (22-27) formed of visually distinct plastics sheet.

ELECTRONIC CHIP TOKEN AND METHODS OF MANUFACTURING SUCH A TOKEN

TOOLS FOR MAINTENANCE, LOADING AND INSTALLATION FOR THE DENSIFICATION OF POROUS REVOLUTION PREFORMS

Un outillage de maintien (100) d'une préforme poreuse de révolution comprend une couronne inférieure (110) et une couronne supérieure (120) maintenue de manière coaxiale au-dessus de la couronne inférieure par au moins un élément d'écartement (130). Chaque couronne (110 ; 120) comporte sur sa surface externe une portée (111 ; 121) destinée à être en contact avec une partie d'une préforme poreuse (10). Au moins une (110) des deux couronnes (110, 120) comporte une portée de forme cylindrique, la surface externe de chaque couronne (110 ; 120) étant en outre revêtue d'un matériau compressible (112, 122) apte à créer un contact glissant avec la partie de la préforme poreuse en contact. A holding tool (100) of a porous preform of revolution comprises a lower ring (110) and an upper ring (120) coaxially held above the lower ring by at least one spacer (130) . Each ring (110; 120) has on its outer surface a bearing surface (111; 121) intended to be in contact with a part of a porous preform (10). At least one (110) of the two rings (110, 120) has a cylindrical bearing surface, the outer surface of each ring (110; 120) being further coated with a compressible material (112, 122) adapted to create a sliding contact with the portion of the porous preform in contact.

METHOD FOR TAMPOGRAPHIC MARKING OF A GAME TOKEN AND DEVICE FOR IMPLEMENTING THE METHOD

The edge (14) of a gaming disk (10) with straight edge is marked with a graphic decoration produced by pad printing using an ink pad with compressed deformable head (36). The pad is inked with a plane plate comprising a ring-shaped zone bearing a decorative design defined by a radially deformed representation of the graphic decoration of the disk (10) edge (14). The disk (10) is placed on a base (30) and centred at the start of the marking operation by centring slides (32) retractable when the disk is being marked.

PROCESS FOR MANUFACTURING A PIECE OF COMPOSITE MATERIAL BY INJECTING POWDER IN A FIBROUS REINFORCEMENT WITH COMPOSITE FILTRATION STRATE DRAINAGE

Un procédé de fabrication d'une pièce en matériau composite comprend les étapes suivantes : - formation d'une texture fibreuse (10) à partir de fibres céramiques réfractaires, - placement de la texture fibreuse (10) dans un moule (110) avec interposition d'une strate de filtration (130) entre la texture fibreuse et un port d'évacuation (112), la strate de filtration (130) comprenant une structure fibreuse partiellement densifiée, - injection sous pression d'une barbotine (150) contenant une poudre de particules céramiques réfractaires (1500) dans la texture fibreuse (10), - drainage par la strate de filtration (130) du solvant de la barbotine ayant traversé la texture fibreuse (10) et rétention de la poudre de particules céramiques réfractaires à l'intérieur de la texture par la strate de filtration (130) de manière à obtenir une préforme fibreuse comprenant au moins la texture fibreuse (10) chargée de particules céramiques réfractaires (1500) et la strate de filtration (130), - traitement thermique des particules céramiques réfractaires (1500) présentes dans la texture fibreuse (10) de la préforme afin de former une pièce en matériau composite comprenant au moins la texture fibreuse densifiée par une matrice céramique réfractaire et la strate de filtration. A method of manufacturing a composite material part comprises the following steps: - formation of a fibrous texture (10) from refractory ceramic fibers, - placement of the fibrous texture (10) in a mold (110) with interposition a filtration stratum (130) between the fibrous texture and an evacuation port (112), the filtration stratum (130) comprising a partially densified fibrous structure, - injecting under pressure a slip (150) containing a powder of refractory ceramic particles (1500) in the fibrous texture (10), - drainage by the filtration layer (130) of the solvent of the slip passed through the fibrous texture (10) and retention of the powder of ceramic particles refractory to the ...

SURFACE COATING-COATED PIECE AND RELATED METHODS

L'invention concerne une pièce en matériau composite comportant un renfort fibreux densifié par une matrice céramique, la pièce présentant une surface externe et étant caractérisée en ce qu'elle est revêtue sur au moins une partie de sa surface externe par un revêtement de surface sous forme solide comportant un alliage de silicium et de nickel présentant une teneur massique en silicium comprise entre 29% et 45 % ou un alliage de silicium et de cobalt.

Method for producing a hollow part made from a ceramic matrix composite material

The invention relates to a method for producing a hollow part made of a ceramic matrix composite material, comprising the steps of: - shaping a hollow fibrous preform, wherein a core made of an oxidisable material is housed in or inserted into the preform (E1); - consolidating said preform (E3, E4); and - extracting the core by oxidising said core (E5).

Making a needled fiber preform for fabricating a composite material part

16 A fiber preform constituting fiber reinforcement of a composite material part that is to be fabricated is made by superposing and bonding together fiber plies, and by densifying the needled preform by introducing a material constituting the matrix of the composite material into it. During the process of making the preform, a powder is dusted onto the surface of at least some of the plies, the powder comprising at least one ingredient selected from a solid resin. in powder form and solid fillers in powder form. The powder is dusted onto the surface of the top ply of the preform that is being made, prior to superposing and needling at least one additional ply.