EP3331684A1 - Method for manufacturing a composite material - Google Patents
Method for manufacturing a composite materialInfo
- Publication number
- EP3331684A1 EP3331684A1 EP16750693.0A EP16750693A EP3331684A1 EP 3331684 A1 EP3331684 A1 EP 3331684A1 EP 16750693 A EP16750693 A EP 16750693A EP 3331684 A1 EP3331684 A1 EP 3331684A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composite material
- conductive wire
- fibrous reinforcement
- conductive
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
- B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
- B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
Definitions
- the invention relates to the field of composite materials with integrated electric beam for the transmission of electric current.
- the invention can be applied to a large number of fields having a need for electric current transport.
- the invention finds a particularly advantageous application in the fields of automotive and aerospace as well as naval, security equipment and consumer goods due to the increasing number of composite material parts.
- the use of composites is particularly sought in the field of transport for the purpose of reducing fuel consumption.
- the integration of the conductors in the composite can improve the modularity of the product under consideration, which generates additional interest for composite materials, for example, a reduction in assembly costs which can then offset the additional cost associated with the composite. use of the composite material.
- Figure 1 illustrates a composite material 200 consisting of a matrix 210 and fibrous reinforcements 220.
- Two fastening elements 221 are fixed on an upper face of the composite material 200 so as to maintain two electrical beams 230 each insulated by a sheath 220.
- a protective material 223 covers the sheaths 220 of the electrical bundles 230 so as to conceal and protect the electrical bundle network 230.
- This conventional architecture generates a large footprint and overweight due to the presence of ducts, fasteners and protective material. It is therefore sought composite materials directly incorporating electrical harnesses to remove the fasteners and the protective material.
- U.S. Patent Application No. 2011/0011627 discloses a composite material incorporating electrical harnesses electrically insulated from each other. To do this, several electrical beams are juxtaposed rectilinearly in a non-conductive dielectric layer. The dielectric layer is then incorporated into a fibrous preform prior to solidification of the material.
- U.S. Patent Application No. US 2014/0290977 also discloses a composite material incorporating electrically insulated electrical bundles. To do this, the electrical beams are juxtaposed rectilinearly between two elastomeric bands in a rolling process. The formation of the composite is carried out by calendering and baking this material.
- These solutions make it possible to effectively integrate electrical bundles inside a composite material, but the multi-layer structure of the composite material and the presence of an intermediate material, facilitating the adhesion of the electrical bundle in the composite material, increases the risk of delamination of the composite material. Thus, the mechanical strength of the composite material is degraded.
- the rolling method imposes a rectilinear arrangement of the electrical bundles and does not make it possible to vary the geometry of the positioning of the electrical bundles inside the composite material, for example to connect an apparatus positioned perpendicularly to the axis of the bundle electrical, or located out of the plane of the electrical harness.
- the technical problem of the invention is therefore to find how to integrate at least one electric beam in a composite material without greatly degrading the mechanical strength of the composite material.
- the present invention aims to respond to this technical problem by means of at least one conductive thread which is either positioned in the fibers of a fibrous reinforcement before solidification, or is positioned on a first part of a composite material (or prepreg) with a second portion of the composite material covering the conductive wire so as to integrate the at least one conductive wire.
- the conductive wire is positioned and held in position until solidification of the composite material.
- the conductive wire undergoes a physical or chemical treatment so as to improve the adhesion, in particular the bonding, with the composite material.
- the invention relates to a method for manufacturing a composite material comprising the following steps:
- the invention thus makes it possible to manufacture a composite material incorporating electrical bundles by limiting the risk of delamination.
- the presence of the sheath around the conductive wires is no longer necessary when the composite material is not conductive. Maintaining the conductive wires makes it possible to constrain the geometry of the positioning of the conductive wires in the composite material.
- some parts of composite materials have holes, rivets or inserts that are generally made after the solidification of the composite material by machining. The invention enables the conductor wires to be deflected outside the areas intended to be machined.
- the physical or chemical treatment makes it possible to obtain a high mechanical resistance.
- the physical and / or chemical treatments are one or the combination of the following techniques: plasma, corona, laser, chemical, sol-gel, surface polymerization, electrochemistry, size, PVD, CVD, heat treatment, (valid in the most cases for fiberglass and aramid), galvanizing, electroplating, tinning, painting, electrophoresis, ceramics.
- the at least one conductive thread is integrated into the fibers of the fibrous reinforcement during the step of depositing the at least one conductive thread in contact with at least one fibrous reinforcement.
- This embodiment makes it possible to maintain the initial volume of the composite material while integrating at least one conductive wire by an operation bonding the conductive wire to the fibrous reinforcement.
- the at least one conductive wire is deposited on a first solidified part of a composite material (or prepreg) in the step of depositing the at least one conductive wire in contact with at least one fibrous reinforcement, the method comprising a step of overmoulding a second portion of the composite material so as to coat the conductive yarn in the step of solidifying the polymeric material.
- the overmoulding of the second part of the composite material makes it possible to form an additional mechanical barrier around the first part of the composite material.
- the overmolded conductive son can create electromagnetic protection around the first part of the composite material.
- the at least one conductive wire is deposited on a first layer of the fibrous reinforcement in the step of depositing the at least one conductive wire in contact with at least one fibrous reinforcement, the process comprising a a step of depositing a second layer of the fibrous reinforcement so as to coat the conductive wire prior to the step of solidifying the polymeric material.
- the holding of the at least one conductive wire is formed by a pin positioned on the first layer of the composite material.
- This embodiment is particularly simple to implement because the pin adapts to the geometry of the first layer of the fibrous reinforcement.
- the pin is made of an immiscible material in the impregnating resin and its solvents, resistant to the solidification step.
- the maintenance of the at least one conductive thread is formed by a chute formed in the first layer of the fibrous reinforcement.
- This embodiment is particularly suitable for a preformable fibrous reinforcement, for example a foam.
- the maintenance of the at least one conductive thread is achieved by fibrous links connected firstly to the fibrous reinforcement and secondly to the at least one conductive thread.
- This embodiment is particularly suitable for woven or knitted fibrous reinforcement.
- the fibrous bonds may be used to bond several conductive wires to each other.
- the holding of at least two conductive threads is achieved by a fibrous reinforcement consisting of a hot-melt polymer in the form of filaments extending around at least a portion of the conductive threads, the viscosity of the fibrous reinforcement being sufficient to maintain the conductors between them.
- the holding of the at least one conductive wire is achieved by connecting means configured to fix two distinct ends of the at least one conductive wire.
- the connecting means may be very simple such as tape, or they may be more sophisticated such as a holding frame.
- the at least one conductive wire is made by several wire strands juxtaposed and in electrical contact.
- a conducting wire made by several strands of smaller diameter makes it possible to limit the displacement of the reinforcements of the composite material.
- the at least one conductive wire has a variable section along its length, so as to improve the anchoring of the at least one conductive wire in the composite material.
- the variation of the section of the at least one conductive wire can be carried out only at the ends of the at least one conducting wire or at regular intervals. Preferably, the distance separating two variations of sections remains constant. This change of shape allows a better anchoring of the at least one conductive wire in the composite material, especially during a bending effort.
- at least two conductive threads being deposited and positioned in contact with at least one fibrous reinforcement the method comprises a step consisting in splicing between the two conductive threads. This embodiment has the advantage of joining a plurality of conductive wires directly into the composite material, which guarantees greater strength at the connection and enables the realization of an electrical architecture.
- a conductive wire being disposed between two ends of the composite material the at least one fibrous reinforcement has fibers arranged in an orientation distinct from the orientation of a straight line extending between said two ends of the composite material. composite material. This embodiment makes it possible to improve the resistance of the composite material.
- a conductive wire being disposed between two ends of the composite material said conductive wire is disposed in a non-rectilinear path between said two ends. This embodiment makes it possible to improve the resistance to bending and / or shearing of said composite material.
- FIGS. 1 to 12 represent:
- FIG. 2 a schematic representation in perspective of a composite material incorporating three conductive son disposed in the fibers of the fiber reinforcement according to the invention
- FIG. 3 a schematic representation in section of a composite material incorporating several conductive son staggered in the fibers of a fiber reinforcement according to the invention
- FIG. 4 a schematic representation in perspective of a composite material incorporating several conductive son arranged in several directions in the fibers of a fiber reinforcement according to the invention
- FIG. 5 a schematic representation in perspective of a composite material incorporating an overmolded conductive wire according to the invention
- FIG. 7 is a diagrammatic representation of three bonding steps of three filament-based filamentary filaments according to the invention.
- FIGS. 9a to 9d a schematic representation of four steps of making a composite material with a miscible pin according to the invention.
- FIGS. 10a to 10c a schematic representation of three production steps a composite material with an immiscible pin according to the invention
- FIG. 12a to 12e a schematic representation of five possibilities of making a splice between several conductive son according to the invention.
- FIG. 2 illustrates a composite material 20 containing three conducting wires 23 integrated in the core of the composite material 20 and extending on each side of the composite material 20.
- Composite material means a material composed of an organic matrix 21 and The matrix 21 is, for example, made of thermoplastic or thermosetting polymer. It may also contain additional elements (powders or fillers) playing a role of heat removal.
- the fibrous reinforcements 22 may be in the form of laminates, folds or fibers. In general, they are either two-dimensional or three-dimensional, in the form of weaving, braiding, stitching, non-woven, or knitting. In the case of three-dimensional fibrous reinforcement 22, the conductive yarns 23 are integrated either according to the binding yarn connecting the different superimposed layers, or in the interleaving of the thickness between these layers.
- the three-dimensional fibrous reinforcements 22 comprise intercrock or NCF structures (Non Crimped Fabric), stitched laminate, sandwich structure, or honeycomb.
- the fibers of the fibrous reinforcements 22 are either short, long, or continuous, or natural or synthetic, for example carbon fiber, glass, aramid, basalt ...
- the integration of the son 23 conductors in the composite material 20, allows a reduction of the volume of the structure because the sheath and / or the film surrounding the lead 23 can be removed.
- the disappearance of the sheath occurs in the case of the use of insulating fibrous reinforcements 22, see semiconductors, having a resistivity greater than lQ.m.
- son of glass, aramid, basalt, polymer, as well as fibers combining several of the materials cited upstream there may be mentioned son of glass, aramid, basalt, polymer, as well as fibers combining several of the materials cited upstream.
- the introduction of the conducting wire 23 in the composite material 20 can locally generate a problem of stress concentrations by displacing the fibrous reinforcement 22 punctually.
- the composite material 20 can be more fragile during external demands, and be less mechanically resistant during external impacts.
- a first solution consists in subjecting the conductive wire 23 to physical treatment by introducing roughness or chemical functions. To do this, the conductor wire 23 undergoes a surface treatment in order to ensure a better interface with the matrix 21 of the composite material 20, and consequently a greater mechanical strength.
- the physical and / or chemical treatments are one or the combination of the following techniques: plasma, corona, laser, chemical, sol-gel, surface polymerization, electrochemistry, size, PVD, CVD, heat treatment, (valid in the most cases for fiberglass and aramid), galvanizing, electroplating, tinning, painting, electrophoresis, ceramics.
- thermoplastics the deposits preferentially contain silane functions and for thermosetting, hydroxyl, carboxyl and carbonyl functions (especially for epoxide type matrices).
- This solution makes it possible to electrically isolate the conducting wire 23 with a deposit when it is used with electrically conductive fibrous reinforcements 22.
- This solution also makes it possible to chemically protect the conducting wire 23 in the case of adverse chemical reactions with the matrix 21 and / or the fibrous reinforcement 22.
- a second solution consists in reducing the volume occupied by the conducting wire 23, or by reducing the size of the conductive wire 23, or by using several wire strands juxtaposed and in electrical contact to form the lead wire 23.
- each strand is distributed along a fold of the fibrous reinforcement 22 and has a section unitary weaker than the single conductor wire 23.
- This solution makes it possible to restrict the local extra thickness occurring by the introduction of excessively large conductor wires 23.
- a third solution is to vary the section of a conductor wire 23 single strand to ensure better anchoring during stresses of the composite material 20.
- the lead 23 may comprise a portion having a thinning or magnification in its central portion .
- the lead 23 may also include a crush.
- the variation of the section of the conductor wire 23 may be made only at the ends of the conductor wire 23 or at regular intervals. Preferably, the distance separating two variations of sections remains constant.
- This solution makes it easier to grip the lead wire 23 during automated machine placement.
- a final solution, illustrated in Figure 3, is to place several son son 23, between or in the folds, on several lines. This solution has the advantage of distributing the stress concentrations F to the entire volume of the composite material 20, according to the structure of the fibrous reinforcement 22, or the embodiment of the composite material 20. This solution also makes it possible to feed several elements simultaneously and located at distant coordinates.
- Another risk feared by the introduction of a copper conductor wire 23 in the composite material 20 is the generation of mechanical weaknesses during external impacts on the composite material 20.
- a first solution, illustrated in Figure 4, is to place several son son 23, between or in the folds, in several directions.
- a second solution illustrated in FIG. 5, consists in depositing a conducting wire 23 on a first portion 25 of a composite material 20 and then overmoulding a second portion 26 of the composite material 20 on the first part 25 so as to integrate the wire conductor 23 in the composite material 20.
- the first portion 25 of the composite material 20 may incorporate conductive son 23 disposed in the fibrous reinforcement 22.
- This solution has the advantage of allowing the introduction of a redundancy of the electrical signal passing through the conductive wires 23 outside the plane of orientation of the conducting wires 23 of the first part 25 of the material Composite 20.
- the overmolding of the second portion 26 of the composite material 20 allows to form an additional mechanical barrier during external impacts or additional electromagnetic protection.
- a rectilinear conducting wire 23 may undergo additional forces and no longer adhere to the matrix 21 of the composite material 20.
- the use of curvilinear conductor wires 23 is preferred.
- a curvilinear conductor wire 23 can bypass this local extra thickness.
- the curvature of the conductive wire 23 makes it possible to avoid adding a mechanical brittleness in the area of the composite material 20 having the local extra thickness.
- the conductive wire 23 can be bent inside the composite material 20 to oppose a bending force that would be applied to the composite material 20 and thus improve the bending strength of the composite material 20. The curvature of the conducting wire 23 thus makes it possible to distribute the stresses of the composite material 20 and to modify the electromagnetic disturbances of the composite material 20 generated by the conducting wire 23.
- the invention proposes to deposit the conductive wire 23 in contact with the fibrous reinforcement 22, to position the conductive wire 23, to hold the lead wire 23 and to solidify a polymeric material impregnating the fibrous reinforcement 22.
- the positioning and holding steps are therefore particularly important steps. To do this, it is possible to have substantially cylindrical studs on a preparation support 40. Lead son 23 are then stretched between two pads by winding around the pads. The winding of the conducting wires 23 then corresponds to the positioning step. Then, the assembly formed by the pads and the conductive son 23 is deposited between two layers 31, 32 of a fibrous reinforcement 22. The pads guarantee the positioning of the conductive wires 23 in the presence of the matrix 21 and the fibrous reinforcements 22. The composite material 20 is then solidified.
- the holding can be improved by another technique of positioning the conducting wires 23 between them.
- the conducting wires 23 are interconnected by fibrous bonds 28 before being placed between the layers 31, 32 of a fibrous reinforcement 22 to form the composite material 20
- the fibrous links 28 provide a minimum distance between the conductive wires 23 so as to avoid any risk of undesired electrical contact.
- the fibrous bonds 28 are nano-fibers, fibers or ribbons of the same nature as the matrix 21 of the composite material 20. To make this bond by fibrous bonds 28, in a first step illustrated in FIG.
- preparation support 40 is provided with studs 41 and with fibrous links 28.
- the conductive threads 23 are arranged on the studs 41 above the fibrous links 28.
- fibrous bonds 28 are deposited above the conducting wires 23 to intermingle with the fibrous bonds 28 already deposited on the preparation support 40.
- the conducting wires 23 isolated by the fibrous bonds 28 are extracted from the pads 41 of the preparation support 40.
- the third step of depositing fibrous bonds 28 can be performed by three-dimensional printing.
- Figures 7a to 7c illustrate a variant in which the fibrous bonds 28 are deposited in the form of filaments by a well-known method of electro-spinning (also called "Electrospinning" in the Anglo-Saxon literature).
- the fibrous bonds 28 are deposited by electro-spinning on the conducting wires 23 arranged on a preparation support 40.
- the conducting wires 23 isolated by the fibrous bonds 28 are arranged on a layer 31 of the fibrous reinforcement 22.
- the other layers 32 of the fibrous reinforcement 22 are then added to the conductive yarns 23.
- the viscosity of the fibrous bonds 28 ensures the maintenance of the conductive yarns 23 until solidification of the composite material 20.
- Figure 7c illustrates the composite material obtained with a disappearance of the fibrous bonds 22 which are dissolved in the material of the matrix 21.
- FIG. 8a Another possibility for positioning and holding the lead wires 23 is illustrated in Figures 8a-8e.
- a first step illustrated in FIG. 8a a first layer 31 of the fibrous reinforcement 22 impregnated with the matrix 21 is placed in a mold 45.
- a conductive wire 23 is fixed to the surface of FIG. the first layer 31 of the fibrous reinforcement 22.
- the surface integration with the existing fibrous reinforcement 22 is done by knitting, braiding or picking the conducting wire 23 by a wire, or of the same nature as the fibrous reinforcements 22, which is of a different nature .
- a second layer 32 of the fibrous reinforcement 22 impregnated with the matrix 21 is placed in the mold 45 above the conducting wire 23.
- the mold 45 is closed and the composite material 20 is solidified. Finally, the composite material 20 is extracted from the mold 45 and has a conducting wire 23 through as shown in Figure 8e.
- the lead wires 23 can simply be held at their ends protruding from the composite material 20 by fastening means, such as tape or connectors or a frame.
- the son 23 conductors can also be integrated in the volume of fibrous reinforcements 22 being held at their ends.
- FIG. 9a Another possibility for positioning and holding the lead wires 23 is illustrated in Figures 9a to 9d.
- a fibrous reinforcement 22 impregnated with the matrix 21 is placed in a mold 45.
- a set of counters 24 which are miscible and of the same chemical nature as the matrix 21 is arranged on the fibrous reinforcement 22.
- a conducting wire 23 is positioned on the pins 24. The function of the pins 24 is to keep the conducting wires 23 punctually until the material is transformed.
- the mold 45 is closed and the matrix 21 is injected through an opening 46 of the mold 45 so as to cover the fibrous reinforcement 22 and the 23. Before closing the mold, it is possible to have previously covered the fibrous reinforcement 22 and the wire 23 with another fibrous reinforcement 22.
- FIG. 10a An alternative of this embodiment is illustrated in Figures 10a to 10c.
- the pins 24 are immiscible and resist the shaping of the composite material 20.
- the mold 45 is closed in order to make the pins 24 penetrate into the core of the first layer 31 of the fibrous reinforcement 22 thus making it possible to form orifices 47 in the first layer 31 of the fibrous reinforcement 22.
- a conducting wire 23 is positioned on the pins 24.
- the pins 24 also have It is a function of maintaining the conductor wire 23 on an occasional basis until the composite material 20 is transformed.
- FIG. 10b An alternative of this embodiment is illustrated in Figures 10a to 10c.
- the pins 24 are immiscible and resist the shaping of the composite material 20.
- a second layer 32 of the fibrous reinforcement 22 is placed on the first layer 31 and then the pins 24 are removed. Maintaining the conductor wire 23 being formed by the orifices 47 formed by the pins 24. It is also possible during the third step to have a second layer 32 on the fibrous reinforcement 22 retaining the pins 24. Then after solidification of the two layers with the driver, the pieces are removed.
- FIG. 1 la Another possibility for positioning and holding the lead wires 23 is illustrated in Figures 1a to 1d.
- a fibrous reinforcement 22 impregnated with the matrix 21 is placed in a press 48.
- the press 48 compresses a portion of the fibrous reinforcement 22.
- the press 48 is removed from the contact of the fibrous reinforcement 22 and a chute 27 is formed on the fibrous reinforcement 22.
- the fibrous reinforcement 22 is a material whose shape memory properties are weak.
- the fibrous reinforcement 22 is placed in a mold 45, a conducting wire 23 is positioned and held by the chute 27 and the die 21 is injected through an opening 46 of the mold 45 so as to covering the fibrous reinforcement 22 and the conductive wire 23.
- a conducting wire 23 is positioned and held by the chute 27 and the die 21 is injected through an opening 46 of the mold 45 so as to covering the fibrous reinforcement 22 and the conductive wire 23.
- the conducting wire 23 may be integrated in several plies of the fibrous reinforcement 22 and in several planes.
- the positioning of the conductor wire 23 may also be curvilinear and several son 23 conductors are not necessarily parallel to each other.
- the integration of the son 23 leads does not generate surplus material that can cause delamination during mechanical stress.
- FIGS. 12a to 12e illustrate five examples for splicing two conducting wires 23 integrated in the heart of the composite material 20. These examples can be made with conducting son 23 of identical or different sections. Likewise, the conducting wires 23 may be incorporated beforehand into the fiber reinforcement 22 or during the preparation of the composite material 20, according to the techniques described upstream. The splices can be made in five different ways for mono-filaments (left) or multi-filaments (right).
- the first way is the contacting of a conductor 23 to one (or more) son son 23 through a woven wire reinforcement, in contact between all the conductive wires 23 of the splice. In the contacting zones of the conducting wires 23, soldering or brazing points are added.
- the second way is contacting the leads 23 only by the soldering or soldering point.
- the third way is the direct contact (without intermediary) with the conducting wires 23 and the completion of the soldering or brazing point.
- the fourth way is to contact the conductive wires 23 of the splice by an electrical conductor wire, topstitched to the reinforcement. It can optionally be added to the point of contact between the conducting wires 23, points soldering or brazing.
- the fifth way is the wrapping of the conductors son 23 of the splice by an electrical conductor wire.
- the presence of the conductive wire 23 in the composite material locally reduces the breaking strength of the composite material.
- the rupture of a composite material generally occurs along a rectilinear path following the fibers of the fibrous reinforcement 22.
- the fibers of the fibrous reinforcement 22 may be arranged in an orientation distinct from the orientation of the conductive wire 23.
- the fibers of the fibrous reinforcement 22 are arranged so as to be orthogonal with the orientation of the conductive wire 23.
- the breaking strength can be improved by arranging the conductive wire 23 in a non-rectilinear path between the two ends of the composite material.
- the fibers of the fibrous reinforcement 22 are arranged so as to be orthogonal with the orientation of a dummy straight line between the two ends of the composite material between which the conductive wire 23 extends.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1557533A FR3039923B1 (en) | 2015-08-04 | 2015-08-04 | METHOD OF MANUFACTURING A COMPOSITE MATERIAL |
PCT/EP2016/068189 WO2017021314A1 (en) | 2015-08-04 | 2016-07-29 | Method for manufacturing a composite material |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3331684A1 true EP3331684A1 (en) | 2018-06-13 |
Family
ID=54608730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16750693.0A Withdrawn EP3331684A1 (en) | 2015-08-04 | 2016-07-29 | Method for manufacturing a composite material |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3331684A1 (en) |
FR (1) | FR3039923B1 (en) |
WO (1) | WO2017021314A1 (en) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7281318B2 (en) * | 2004-05-19 | 2007-10-16 | The Boeing Company | Method of manufacturing a composite structural member having an integrated electrical circuit |
GB2440698B (en) * | 2006-01-17 | 2008-06-04 | Beru F1 Systems Ltd | A wiring component |
CN101720293B (en) * | 2007-05-02 | 2013-03-20 | 美艾格Ias有限责任公司 | Process for fabricating a composite underbody panel |
NO20073832L (en) * | 2007-07-20 | 2009-01-21 | Fmc Kongsberg Subsea As | composite Cable |
FR2924894B1 (en) | 2007-12-10 | 2010-12-10 | Eads Europ Aeronautic Defence | PIECES OF ELECTRO-STRUCTURAL COMPOSITE MATERIAL. |
GB0805640D0 (en) | 2008-03-28 | 2008-04-30 | Hexcel Composites Ltd | Improved composite materials |
GB0909605D0 (en) * | 2009-06-04 | 2009-07-15 | Airbus Uk Ltd | Aircraft wire fairing |
US20120111614A1 (en) * | 2010-11-10 | 2012-05-10 | Free James J | Integrated composite structure and electrical circuit utilizing carbon fiber as structural materials and as electric conductor |
FR2975864A1 (en) | 2011-05-27 | 2012-11-30 | Eads Europ Aeronautic Defence | SEMI-PRODUCT IN THE FORM OF A CONDUCTIVE BAND INTEGRABLE IN A COMPOSITE MATERIAL AND METHOD OF MANUFACTURING SUCH A BAND |
GB2497807B (en) * | 2011-12-22 | 2014-09-10 | Rolls Royce Plc | Electrical harness |
-
2015
- 2015-08-04 FR FR1557533A patent/FR3039923B1/en active Active
-
2016
- 2016-07-29 WO PCT/EP2016/068189 patent/WO2017021314A1/en active Application Filing
- 2016-07-29 EP EP16750693.0A patent/EP3331684A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR3039923B1 (en) | 2020-10-09 |
WO2017021314A1 (en) | 2017-02-09 |
FR3039923A1 (en) | 2017-02-10 |
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