Patent application number | Description | Published |
20110132548 | CYLINDRICAL COMPOSITE PART TAPE LAYING MACHINE - The invention concerns a layup machine, economic in terms of capital costs, for producing large-sized cylindrical panels made of composite material covering an angular sector less than 360° and allowing high layup productivity. The device of the invention allows a fixed cylindrical mandrel to be placed on the machine's table and the tape laying head to be moved over the surface of this mandrel, the actuator carriage supporting said tape laying head moving around the mandrel along an at least partially circular track. | 06-09-2011 |
20110260375 | PROCESS FOR MANUFACTURING A PIECE THAT IS MADE OF COMPOSITE MATERIAL AND DEVICE FOR ITS IMPLEMENTATION - A process for manufacturing a piece made of composite material that includes fibers that are immersed in a resin matrix, whereby the piece is placed in a first chamber with at least one flexible wall. The process includes a thermal cycle with essentially a first phase ( | 10-27-2011 |
20110291325 | PROCESS FOR THE REALIZATION OF A STIFFENER MADE OF COMPOSITE MATERIAL WITH AN OMEGA SECTION - A process for the production of a stiffener made of composite material that includes a central part with wings on both sides such that when the wings are resting against an element to be reinforced, the central part is separated from the element to be reinforced, with the process including producing a flat strip ( | 12-01-2011 |
20120024455 | METHOD FOR MANUFACTURING A STIFFENED PANEL OF COMPOSITE MATERIAL - A process for the production of a stiffened panel made of composite material includes the stages of depositing the fibers that constitute the panel on a rigid device, depositing at least one stiffener, covering the unit with a sealed wall, and then polymerizing, and providing—for each stiffener—a rigid counter-mold in contact with the convex surface of the stiffener, covering the zone(s) of the panel that is/are not covered by the stiffener with at least one band sufficiently rigid to transmit compression forces by allowing play between the band and the stiffener, and then depositing a seal such that the seal, the band, and the rigid counter-mold form the sealed wall, whereby the seal is able to have two states, a first malleable state during application so that it adapts to the profile of the lateral edges of the stiffeners, and a hardened state to ensure transmission of compression forces in a manner essentially identical to the rigid counter-molds or to the bands arranged on either side of the seal so as not to generate a pressure gradient. | 02-02-2012 |
20120024468 | METHOD FOR MANUFACTURING A STIFFENED PANEL OF COMPOSITE MATERIAL - A process for the production of a stiffened panel made of composite material, includes the stages of depositing the fibers that constitute the panel on a rigid device ( | 02-02-2012 |
20120060755 | DEVICE FOR DEPOSITION OF FIBERS UPON A FRAME WITH CONCAVE CIRCULAR SECTIONS - A device for deposition of fibers on a support ( | 03-15-2012 |
20120086150 | PROCESS FOR MANUFACTURING A STIFFENER OF COMPOSITE MATERIAL - A process for manufacturing a stiffener made of composite material with an inside surface of a concave shape, includes producing a flat strip ( | 04-12-2012 |
20120234489 | PROCESS FOR MANUFACTURING A PART MADE OF COMPOSITE MATERIAL THAT COMPRISES AT LEAST ONE RADIUS OF CURVATURE - A process for the production of a part made of composite material including at least one radius of curvature, includes a stage for deposition of pre-impregnated fiber layers ( | 09-20-2012 |
20120312459 | METHOD FOR MANUFACTURING A COMPOSITE MATERIAL CURVED PART, AND DEVICE FOR MANUFACTURING A COMPOSITE MATERIAL CURVED PART - The invention concerns a process for manufacturing a curved part of composite material, during which the layers of fibers of composite materials ( | 12-13-2012 |
20130233470 | METHOD FOR OBTAINING A COMPOSITE MATERIAL PART INCORPORATING A TENSIONING STEP OF THE FILAMENTS AND TOOL FOR ITS IMPLEMENTATION - A method for obtaining a composite material part from a preform of layers of fibers pre-impregnated with resin stacked on top of one another on a tool, the preform being delimited by a lower surface, an upper surface, and a peripheral flank. The method includes attaching to the tool, after the last layer has been laid, a peripheral part comprising a wing adapted to cover the peripheral edge of the upper surface, so as to create, in the periphery of the preform, a peripheral cavity adjacent to the flank of the preform and, before the polymerization phase, to withdraw the gas present in the peripheral cavity so as to tension filaments of the preform by exerting a traction force at the ends of the filaments. | 09-12-2013 |
20130233474 | METHOD OF MANUFACTURING A CURVED PROFILE MADE OF COMPOSITE MATERIAL FROM A RECTILINEAR PREFORM OF FIBER PLIES - A method of manufacturing a curved profile from a rectilinear preform of pre-impregnated fiber plies. The method includes stacking plies on a deformable mandrel and winding the deformable mandrel and the stacked plies on a bending tool along a rotation axis, the profile comprising a stack of N plies. At least one first section of the profile is arranged along a plane perpendicular to the axis of rotation and at least one second section is arranged in a plane parallel to the axis. The method includes the steps of stacking the N plies of fibers on the deformable mandrel, bending in a single step the N plies sandwiched between the deformable mandrel and the bending tool and polymerizing the bent N plies. The curved profile comprises M plies with fibers oriented at A° relative to a longitudinal direction and M+/−5% plies with fibers oriented at −A°. | 09-12-2013 |
20130234352 | METHOD OF MANUFACTURING A PART MADE OF COMPOSITE MATERIAL AND TOOL FOR THE IMPLEMENTATION THEREOF - A method and apparatus for manufacturing a composite material part from a preform of fibers pre-impregnated with resin. The method includes laying the preform on a laying surface of a tool with a peripheral shoulder, covering the preform with a conforming plate delimited by a peripheral edge which extends beyond the peripheral flank of the preform over the entire periphery of the preform, using shims calibrated to position the conforming plate, the shims being arranged between the support surface of the peripheral shoulder and the peripheral edge of the conforming plate, removing the calibrated shims, arranging a seal connecting the conforming plate and the tool all around the preform, and polymerizing the preform. | 09-12-2013 |
20130249158 | MACHINING TOOL FOR AN AIRCRAFT FUSELAGE FRAME - A tool for machining a curved profile along an axis of rotation X, said curved profile comprising at least one first section along a plane perpendicular to the axis of rotation X and at least one second section parallel to the axis of rotation X. The tool includes blocks, each having a clamping surface against which the profile can take support. The blocks include positioning elements against which the first section and the second section of the profile can take support, and an apparatus arranged to immobilize the profile which is adapted to occupy a first activated state, wherein it immobilizes the profile, and a second deactivated state, wherein it does not immobilize the profile. The tool includes manual presses for maintaining the profile flattened against the positioning elements until the profile immobilizing apparatus is in the activated state. | 09-26-2013 |
20130276964 | METHOD FOR PRODUCING A CURVED PROFILE MADE FROM A COMPOSITE MATERIAL FROM A RECTILINEAR PREFORM OF FIBER WEBS - A method for producing a curved profile from a rectilinear preform of preimpregnated fiber webs, including stacking webs on the deformable mandrel and winding the deformable mandrel and the stacked webs on a bending tool along an axis of rotation (X), the profile including a stack of N webs, at least one first part of the profile being positioned in a plane perpendicular to the axis of rotation (X) and at least one second part parallel to the axis (X) whereof a face can be in contact with the bending tool. The method includes stacking the N fiber webs on the deformable mandrel, generating a heat gradient between the face and the rest of the preform that is hotter than the face, bending, in a single phase, the N webs inserted between the deformable mandrel and the bending tool, and polymerizing the N bent webs. | 10-24-2013 |
20130327472 | METHOD FOR PRODUCING A CURVED SECTION PIECE OF COMPOSITE MATERIAL FROM A RECTILINEAR PREFORM OF FIBRE LAYERS - A method for producing a curved section piece from a rectilinear preform of preimpregnated fibre layers includes stacking layers on a deformable mandrel and winding the mandrel and bending the stacked layers on a bending tool on a rotation axis in a single phase and polymerizing the bent layers. The section piece includes a stack of N layers, at least a first portion of which is placed in a plane perpendicular to the rotation axis (X) and at least one second portion parallel to the axis (X) including at least one layer of fibres oriented at 0° along the length of the perform. The N fibre layers are stacked on the mandrel. A neutral fibre is placed on a portion of the mandrel closer to the rotation axis (X) than the last layer of fibres oriented at 0° stacked on the second portion parallel to the rotation axis (X). | 12-12-2013 |
20140072775 | METHOD FOR PRODUCING A PROFILE THAT HAS A RE-ENTRANT ANGLE IN A COMPOSITE MATERIAL FROM A STACK OF LAYERS OF FIBRES - A method for producing, in a composite material, a component that has a re-entrant angle, includes stacking layers of fibres which have been pre-impregnated with a resin so as to obtain a preform and placing the preform in a tooling fixture in order to subject it to a polymerization cycle including a temperature cycle, with a temperature-increase phase and at least one soak at which the temperature is maintained, and a pressure cycle on the outside of the tooling fixture with a pressure-increase phase and a pressure-hold phase, with the layers of pre-impregnated fibres being able to slip against one another when the temperature of the temperature cycle is equal to or higher than a threshold temperature Tf dependent on the resin. The temperature-increase phase includes a soak at a temperature higher than or equal to Tf, the soak beginning before the end of the pressure-increase phase. | 03-13-2014 |
20140102625 | METHOD FOR FIBRE PLACEMENT WITH THE AID OF A TEMPERATURE-REGULATED ROLLER - A method for fibre placement with the aid of a roller is provided. The roller is able to pivot about a rotation axis and to lay a plurality of first pre-impregnated fibres on second pre-impregnated fibres of a laying surface by rolling over said laying surface. The first fibres being distributed along a lower generatrix of the roller and being in contact with an outer surface of said roller over a contact arc. The method includes cooling the first pre-impregnated fibres in contact with the roller so as to enable them to slide on the outer surface of the roller and heating the second pre-impregnated fibres of the laying surface that are located at the front of the roller so as to promote the adhesion of the first fibres to the second fibres of the laying surface. | 04-17-2014 |
20140165337 | FIBRE LAYING MACHINE COMPRISING A ROLLER WITH PIVOTING RINGS - A fibre laying machine includes a laying head with a roller able to pivot about an axis of rotation and to apply a plurality of preimpregnated fibres to an application surface by rolling over the application surface. The fibres are distributed along a lower generatrix of the roller and in contact with an exterior surface of the roller over an angle of wrap. The roller includes a cylindrical body, pivoting rings around the body, and means for immobilizing the pivoting rings with respect to the body in a direction parallel to the axis of rotation. | 06-19-2014 |
20140338837 | METHOD FOR PRODUCING A FIBER PREFORM BY MEANS OF WINDING AND SET OF TOOLS FOR IMPLEMENTING THE METHOD - A method for producing a fiber preform by winding at least one thread in a groove of a mold. The method involves using a flexible element which is capable of becoming deformed by means of flexion, in a plane which contains the winding axis, in order to penetrate into the groove in order to push the sections of the thread(s) towards the base of the groove and/or towards zones which cannot be accessed directly by the thread(s). A set of tools for implementing the method is also provided. | 11-20-2014 |