Patents Assigned to INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNE
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Publication number: 20220009128Abstract: A method for manufacturing a fiber preform including a number of plies greater than or equal to two, includes: a) heating a ply; b) depositing the ply on a preforming mold; c) forming the ply, the ply then forming an intermediate preform; d) heating a new ply; e) depositing the new heated ply on the intermediate preform; f) forming the new ply in order to form a new intermediate preform; g) where applicable, repeating steps d) to f) at least once, the intermediate preform being replaced in these steps by the new intermediate preform in order to produce the fiber preform with the number of plies.Type: ApplicationFiled: November 12, 2019Publication date: January 13, 2022Applicant: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Xavier TARDIF, Matthieu KNEVELER
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Patent number: 11192251Abstract: A method for controlling the operation of a robot within a system. The system includes the robot and sensors to analyze the concentric environment of the system. The sensors include a contact sensor, a proximity sensor and a vision and location sensor. For each of the axes of the robot, a maximum allowable force value is obtained. If the force on one of the axes of the robot is greater than the maximum value, the robot is stopped in its position. A concentric monitoring space or a security space is obtained as a function of the speed of the robot. The environment of the robot is monitored by the sensors. If the intrusion of an object is detected in the safe space of the robot, the maneuvering speed of the robot is gradually decreased to a safe speed. The process is repeated for the next axis of the robot.Type: GrantFiled: November 28, 2016Date of Patent: December 7, 2021Assignees: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE NANTESInventors: Christine Chevallereau, Alexis Girin, Philip Long
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Patent number: 10824112Abstract: Some embodiments are directed to a system for measuring vibrations of a surface of a mechanical part, by digital holography. The system includes a source of radiation emitting in a predetermined range of frequencies, a first separator element configured to define a first incident ray and a reference ray, a module for shaping a second incident ray from the first incident ray, and an optical element configured to make the reference ray and a radiation produced by a reflection of the incident ray on the surface of the mechanical part interfere. The module for shaping the second incident ray includes diffracting optical elements having a diffraction structure to diffract the incident radiation. The structure is from a polymer, sol-gel or photoresin material resting against a glass substrate, the structure including elements etched in a plane parallel and/or orthogonal to the substrate, with dimensions from 100 nanometres to 100 micrometres.Type: GrantFiled: March 19, 2018Date of Patent: November 3, 2020Assignees: UNIVERSITE DU MANS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, INSTITUT MINES TÉLÉCOM (IMT) ATLANTIQUE BRETAGNE PAYS DE LA LOIRE, INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Julien Poittevin, Pascal Picart, Kevin Heggarty, Julien Le Meur
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Publication number: 20200230897Abstract: A method for producing a part made of a composite material having an organic matrix and a fibrous reinforcement, the method comprising the following steps: a) automatically draping, either in a planar arrangement or shaped over a three-dimensional cavity, at least one lamination (30, 31) comprising at least a first and second different dry plies, at least partially stacked to form a dry, planar or three-dimensional preform, each ply being fibrous and the plies mutually differing in terms of their structure, their positioning on the preform, the fibres composing them and/or the geometry of the ply, wherein at least one ply is laid in a non-woven form and has a plurality of unidirectional fibre layers laid on top of each other with a different angular orientation of the fibres, and/or at least one ply is woven; b) thermoforming the preform, the thermoforming step taking place, when the preform has been draped in a planar arrangement in step a), in a three-dimensional cavity of a first mold to impart a three-dimType: ApplicationFiled: April 6, 2020Publication date: July 23, 2020Applicant: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Matthieu KNEVELER, Charles LEROUX, Laurent ROTA
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Patent number: 10596702Abstract: A cable robot comprises a platform supporting an effector and cables. Each cable is connected on one end to an attachment point on the platform and extends from this attachment point to an anchoring point attached to a supporting structure. The anchoring points being contained in more than one plane. The cables include a set of driving cables whose ends are connected to a winch. The cables include a set of reconfigurable cables, whose anchoring points are movable relative to the supporting structure. The supporting structure is beared by a set of independent mobile bases having anchorings to fix the mobile bases to the ground.Type: GrantFiled: December 27, 2016Date of Patent: March 24, 2020Assignee: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Philip Long, David Marques-Gamez, Stéphane Caro, Alexis Girin, Lorenzo Gagliardini, Marc Goutefarde
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Publication number: 20200070437Abstract: Cassette of at least one fibrous reinforcement wound into at least one roll of textile in order to carry out laying up, including: a receiving structure adapted to receive said at least one roll and to enable it to be unwound, a connecting system for removably fixing the cassette to a laying head part, itself adapted to be connected to a laying up robot.Type: ApplicationFiled: December 7, 2017Publication date: March 5, 2020Applicant: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Gregory GRILLET, Matthieu KNEVELER
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Publication number: 20200001552Abstract: A mobile platform which is designed to equip a cable-driven parallel robot, characterized in that the platform is configured to support at least one roll of a fabric made of composite material, and to permit the unwinding of said at least one roll, in order to carry out draping of a preform, in particular a dry preform, by controlled displacement of the platform above a draping line.Type: ApplicationFiled: March 9, 2018Publication date: January 2, 2020Applicant: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Matthieu KNEVELER, Alexis GIRIN, Stephane CARO
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Patent number: 10513067Abstract: An assembly includes a first part made of composite material including a polymer matrix and a second part made of metal. The two parts are assembled by opposite or assembly faces along an interface subjected to shear loads. The first part is made of a composite having continuous reinforcing fibers in a thermoplastic matrix. The second part includes, on its assembly face, a coupling form having a plurality of patterns. Each pattern has a closed contour in a plane parallel to the assembly face of the second part and extends along a direction normal to the assembly face of the second part. A method for making such an assembly is also provided.Type: GrantFiled: June 10, 2015Date of Patent: December 24, 2019Assignee: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Sylvain Roche, Francis Facon, Thierry Renault, Stéphane Auger, Christophe Cornu, Cyrille Dalla-Zuanna
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Publication number: 20190232578Abstract: A method for producing a part made of a composite material having an organic matrix and a fibrous reinforcement, the method comprising the following steps: a) automatically draping, either in a planar arrangement or shaped over a three-dimensional cavity, at least one lamination (30, 31) comprising at least a first and second different dry plies, at least partially stacked to form a dry, planar or three-dimensional preform, each ply being fibrous and the plies mutually differing in terms of their structure, their positioning on the preform, the fibres composing them and/or the geometry of the ply, wherein at least one ply is laid in a non-woven form and has a plurality of unidirectional fibre layers laid on top of each other with a different angular orientation of the fibres, and/or at least one ply is woven; b) thermoforming the preform, the thermoforming step taking place, when the preform has been draped in a planar arrangement in step a), in a three-dimensional cavity of a first mould to impart a three-diType: ApplicationFiled: June 20, 2017Publication date: August 1, 2019Applicant: INSTITUT DE RECHERCHE TECHNOLOGIQUE JULES VERNEInventors: Matthieu KNEVELER, Charles LEROUX, Laurent ROTA