EP2740824B1 - Armature textile triaxiale, procédé de production d'armatures textiles triaxiales et pièce en matériau composite - Google Patents

Armature textile triaxiale, procédé de production d'armatures textiles triaxiales et pièce en matériau composite Download PDF

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Publication number
EP2740824B1
EP2740824B1 EP12196166.8A EP12196166A EP2740824B1 EP 2740824 B1 EP2740824 B1 EP 2740824B1 EP 12196166 A EP12196166 A EP 12196166A EP 2740824 B1 EP2740824 B1 EP 2740824B1
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Prior art keywords
yarns
axial
wheels
axial yarns
bias
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EP12196166.8A
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German (de)
English (en)
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EP2740824A1 (fr
Inventor
Georges Cahuzac
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VOSTECH BV
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VOSTECH BV
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Priority to ES12196166T priority Critical patent/ES2763326T3/es
Priority to EP12196166.8A priority patent/EP2740824B1/fr
Publication of EP2740824A1 publication Critical patent/EP2740824A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
    • D04C3/20—Arrangement of bobbin heads and guides or track plates in the machine
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/02—Braiding or lacing machines with spool carriers guided by track plates or by bobbin heads exclusively
    • D04C3/36—Frames
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines
    • D04C3/40—Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02411—Fabric incorporating additional compounds enhancing mechanical properties with a single array of unbent yarn, e.g. unidirectional reinforcement fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the present invention relates to the domain of composite materials that are constituted by a textile armature, or long fiber reinforcement, impregnated with a resin named matrix.
  • That invention is a new type of armature and its manufacturing process that allows obtaining low cost parts with complex shapes, open or closed, with high mechanical performances (value).
  • That invention is more precisely a new type of textile architecture that is a triaxial braid with a majority of the yarns in the longitudinal direction and a constant thickness. For obtaining from those braids high performance composite materials, it's necessary that the yarns in the three directions have minimal fiber crimp and create few internal voids by their crossing. That is the result achieved by that invention.
  • the reason for that is the crossing of the bias yarns between two axial yarns.
  • the invention resolves that problem because it allows manufacturing triaxial braids with a constant thickness and a majority of fiber in the axial direction while keeping all the other advantages of the braiding process that creates at high speed in-shape parts, by introducing in the center of the braiding machine a mandrel that is covered by the yarns. That way of making parts is often named overbraiding.
  • That textile armature holds layers of axial yarns disposed in quincunxes and linked two by two by the bias yarns. The first axial layer is linked with the second layer by the bias yarns with one orientation while the second layer is linked with the third one by the bias yarns with the other orientation. That textile armature is well done but is not symmetrical into its thickness and that can create some deformation during the polymerization with shrinkage of the resin matrix.
  • Our present invention comprises a high quality tri-axial textile armature, very useful to manufacture cheaply lengthy parts directly in shape, in order of remediating at a lack in the range of existing processes.
  • An armature in accordance with this invention has three fiber orientations, the first one axial and the two others making a angle, by example +60° and -60°, with the axial direction, in which those bias yarns do not cross each other during getting through the layer of axial yarns, but get it through in their respective odd and even intervals.
  • the +60° yarns pass through the axial yarn layer in each odd interval while the -60° yarn passes through it in each even interval.
  • the axial yarns in the central layer can have a round or elliptic cross section but more preferably the cross section of the axial yarns has a flattened cross section.
  • This flattened cross section is needed to create a layer that has a minimum thickness and a maximum strength.
  • the size of the cross section of the axial yarns of the central layer in a direction basically perpendicular to the thickness is at least twice the size of the cross section in the same direction of the axial yarns of the side layer or the bias yarns. It is noted that all kinds of cross sections can be applied.
  • the process to manufacture those armatures in accordance with this invention is a braiding process, that is to say a process that moves the yarn bobbins by the way of rotating adjacent wheels exchanging each other's their bobbin carriers.
  • a braiding machine for making an armature in accordance with this invention has to be built with two circumferential rows of adjacent wheels and three rows of tubes for introducing the axial yarns.
  • the tubes of the external and internal rows are situated at the center of the notched wheels, while the tubes of the central row are situated at or near the crossing of the diagonals linking the axes of fourth adjacent wheels.
  • Those braiding machines can be built within two ways of disposing the rotating wheels. The first way is in disposing the two rows of wheels on a disk. The second way is in disposing the two rows of wheels inside a cylindrical or spherical ring. In the both cases the yarns are laid on a central mandrel after leaning on a fixed ring surrounding it.
  • the figure 1 is a view of a braid made in accordance with prior art. Inside that braid the axial yarns are separated by spaces equal or larger than their own width to allow the passing of the bias yarns through the axial yarns while there are crossing each other's into those same spaces.
  • the composite material part obtained by laying many of such braids can't be a high quality part because each braided layer has not a constant thickness.
  • the figure 2 is a schematic view of the disposition of the notched rotating wheels into a braiding machine made in the prior art for making armatures of composite material parts. That machine has only one row of notched wheels that are making by their rotations the bobbins carriers holding the bias yarns moving into opposite directions along two crossed paths. Those yarns are forming the braid around a central mandrel. The axial yarns are passing through the center of each notched wheel and are placed into the braid as shown on figure 1 .
  • the figure 3 shows a first example of armature in accordance to the invention.
  • the bias yarns 2 passes over two axial yarns 1a then passes under two axial yarns 1a.
  • the bias yarns 3 also passes over and under two axial yarns 1a but their passing through the layer of yarns 1a are shifted of one interval with that of the bias yarns 2.
  • this armature is characterized by the getting of the bias yarns 2, constituting a first direction, through the layer of axial yarns 1a in their intervals said even and the getting of the bias yarns 3, constituting the second direction, through that layer of axial yarns 1a in their intervals said odd.
  • those axial yarn 1a intervals can be smaller than in the armature showed figure 1 because the bias yarns 2 and 3 get through the layer of yarns 1a in separated intervals and the yarns 2 never cross the yarns 3 in those intervals.
  • the unit cell that characterizes this fibre architecture is made of one layer of four axial yarns linked by two sets of N crossed bias yarns, N being an even number, equal to two on this figure.
  • the figure 4 shows a second example of armature in accordance with this invention.
  • Axial yarns 1b were introduced over and under the intervals between the axial yarns 1a for improving the continuity of thickness of this armature.
  • the unit cell that characterizes this fibre architecture is made by 12 axial yarns disposed on three layers, with the yarns 1a of the central layer in quincunxes with the yarns 1b of the side layers, linked by two crossed sets of N yarns, N being an even number, equal to two for the armature shown on this figure 3 .
  • Each bias yarn 2 or 3 get over 6 and under 6 axial yarns 1a and 1b while crossing 2 ⁇ N yarns 3 or 2 of the other set of bias yarns.
  • the created armature is suitable for making high performance composite material because its thickness is uniform and have a majority of the yarns in the axial direction.
  • the armature shown on figure 4 has the sections of the yarns 1a of the central layer roughly two times bigger than the ones of yarns 1b of the side layers.
  • its section can be usually chosen between two times and four times bigger than the section of the side axial yarns in order to improve the thickness homogeneity of that armature.
  • the figure 5 shows a third example of the armature object of the invention.
  • the N number of each set of bias yarns was doubled by comparison with the figure 4 , therefore it is equal to four. That allows having an armature in which the wideness of the bias yarns 2 or 3 is the same as the one of the side axial yarns 1b for an angle of 60°.
  • the figure 5a shows a fourth example of the armature object of this invention.
  • the N number of each set of bias yarns has been increased to six. That allows having an armature in which the width of the bias yarns 2 or 3 is the same that the one of the side axial yarns 1b for an angle of 45°.
  • the figure 6 shows a section view of another example of armature in accordance with this invention in which a thick central layer is obtained by using as axial yarns 1a a light density product, by example a foam in order of creating an armature suitable for making the center part of a sandwich structure usable for impregnating by resin infusion.
  • the bias yarns have in that armature the right positioning to carry the shear loads between the skins, the same positioning that we can find in the French patent Nb. 2.918.599 .
  • the figure 7 shows a flat sketch of the disposition of the two rows of notched wheels 4 and of the three rows of tubes 5 and 6 in which are introduced the axial yarns 1a and 1b for making armatures in accordance with this invention.
  • Each wheel has four notches as in any regular braiding machine.
  • the tubes 5 in which the axial yarns 1b of the side layers are introduced are situated at the center of each notched wheel while the tubes 6 in which the axial yarns 1a of the central layer are introduced are situated near the crossing of the diagonals linking the axes of fourth adjacent wheels. All those wheels 4 are linked with gears 14 not shown on that sketch but visible on figure 10 .
  • Each bobbin carrier 9 is guided by grooves 7 and 8 machined into a plate situated between the wheels and the gears.
  • the bobbin carriers charged with the bias yarns 2 are moving to the right side guided by the grooves 7 while the bobbin carriers charged with the bias yarns 3 are moving to the left side guided by the grooves 8.
  • Their guiding grooves are machined in such a way to allow the using of bobbins as big as possible as passing in the center between the tubes 5 and 6.
  • the armature visible on figure 3 is obtained.
  • the armatures visible on figure 4 or 5 are braided.
  • their number is limited at two on each trajectory going from one wheel to the following four. Hence the armature visible on figure 5a is not doable by using wheels with four notches.
  • the figure 7a shows the same sketch on which the number of notches on each wheels has been decreased to three.
  • the number of bobbin carriers 9 can be increased to three on each trajectory without colliding. Hence the armature visible on figure 5a is doable by using wheels with only three notches.
  • the figure 8 shows such a disposition of wheels on the internal row that have four notches, and wheels of the external row that have 5 notches. Hence it's possible to put three bobbin carriers on each trajectory of 9 notches.
  • the figure 9 shows a general front view of a braiding machine able to make the armature object of this invention. Its notched wheels are disposed on a vertical disk 13. That vertical disposition is usely named at horizontal axe. That disposition is convenient for intruding a mandrel 10 that will be covered by the yarns.
  • the figure 10 is the side view of that braiding machine showing the gears 14 driving the wheels 4, the plate 15 in which the guiding grooves are machined. and the path of the yarns from the ends of the tubes 5 and 6 to the mandrel 10 on which they create the armature 12 after sliding inside the ring 11.
  • the figure 11 shows the side view of a braiding machine made by disposing the two rows of wheels symmetrically inside a big ring.
  • the surface on which the bobbin carriers move is a spherical surface.
  • the figure 12 shows a braiding machine with its lower part installed into a pit for keeping the area of braid armature formation at a height convenient for the operators or for making easier the introduction of a great length mandrel into the center of that braiding machine.
  • the created braid goes on a tensile apparatus 17 that makes the braid 12 moving at a constant speed and winds it on a drum 18.
  • Those notched wheels are linked with gears 14 that are also in that ratio of 1.25 between their two rows.
  • the diameter of the wheels of the internal row is 160 mm and the diameter of the ones of the external row is 200 mm. That machine can receive 84 bobbin carriers maximum.
  • a mandrel 10 is situated in the machine center. Its shape can be the internal shape of the required part. So, its shape can be other than round, rectangular by example, have a variable size or a curvature to braid a fuselage frame by example. It can move to pull the braid or be fixed and the braid slides on it to be wounded around a drum (see figure 12 ).
  • a cutting mechanism can be placed between the mandrel 10 and the drum 18 to wind on it a flat triaxial fabric.
  • a ring 11 surrounds the mandrel 10 and help to facilitate the formation of the braided armature 12. It is linked at the machine frame 16 by some rods not shown here.
  • the tuning of the mandrel speed, or of the sliding speed of the braid on it when the mandrel does not move, with the rotation speed of the wheels adjusts as required the angle of the bias yarns with the axial yarns.
  • That braiding machine allows braiding an armature with three layers of 28 axial sites of yarns but, as we can put into the central layer two to four yarns, that braid has the equivalent of 112 to 168 axial yarns.
  • the armature created by this braiding machine is similar at the one shown on the figure 5 .
  • that braiding process produces triaxial armatures with the following features: with braiding a 45° braiding angle and a fiber volume ratio of 60%, a thickness of 1.5 mm, 59% of axial fibers and 41% of bias yarn, with a 60° braiding angle, a thickness of 1.7 mm , 50% of axial fibers and bias fibers.
  • That triaxial armature will be produced at a rate of 320 Kg/hour for a 45° braiding angle, 220 Kg/hour for a 60° braiding angle.
  • the internal wheel diameter is 200 mm and the external wheel diameter is 208.9 mm.
  • the diameter of the bobbin carriers is 110 mm and the diameter of their bobbins is 80 mm.
  • the external diameter of that braiding machine is 10 m. It will be useful to install it partially into a pit to facilitate the operator work.
  • the braided armature will have the equivalent of 576 to 864 axial yarns depending of the number of yarns put in each tube of the central row.
  • That braiding process produces triaxial armatures with the following features: with a 45° braiding angle, for a fiber volume ratio of 60%, a thickness of 1.52 mm, 59% of axial fibers and 41% of bias fibers, with a 60° braiding angle, a thickness of 1.78 mm, 50% of axial fibers and bias fibers. That triaxial armature will be produced at a rate of 1600 Kg/hour for a 45° braiding angle, 1100 Kg/hour for a 60° braiding angle.
  • this new process will allow manufacturing in-shape reinforcement for composite parts, often named preforms, cheaper than any other process as all the yarns in three directions are wrapped together on the mandrel.
  • the fiber laying rate is so much higher that it is a sure bet to use this new process.
  • the price of the raw material is also cheaper as that process uses only dry fiber without all the troubles generated when using pre-impregnated yarns.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Claims (15)

  1. Armature textile triaxiale pour réaliser un matériau composite de grande qualité comprenant une couche centrale unique de fils axiaux (1a), réticulés par des fils en biais (2, 3) s'étendant dans une première et une seconde direction, caractérisée en ce que les fils en biais (2, 3) passent en alternance sur deux fils axiaux (1a) de la couche centrale unique puis passent sous deux fils axiaux (1a) de la couche centrale, le passage à travers la couche centrale de fils axiaux (1a) étant séparé par un intervalle entre des fils axiaux (1a) de la couche centrale afin d'empêcher les fils en biais (2) s'étendant dans la première direction et les fils en biais (3) s'étendant dans la seconde direction de passer à travers la couche centrale de fils axiaux (1a) dans le même intervalle, les fils en biais (2) s'étendant dans la première direction passant à travers la couche centrale de fils axiaux (1a) dans des intervalles pairs entre des fils axiaux (1a) de la couche centrale, et les fils en biais (3) s'étendant dans la seconde direction passant à travers la couche centrale de fils axiaux (1a) dans des intervalles impairs.
  2. Armature textile triaxiale selon la revendication 1, caractérisée en ce que les fils axiaux (1a) ont une dimension de section transversale qui a au moins deux fois la dimension de la section transversale des fils en biais (2, 3).
  3. Armature textile triaxiale selon la revendication 1 ou 2, caractérisée en ce que le matériau composite de grande qualité comprend la couche centrale unique de fils axiaux (1a) et deux couches de côté de fils axiaux (1b), dans laquelle les couches de côté de fils axiaux (1b) sont placées sur des côtés opposés par rapport à la couche centrale de fils axiaux (1a), la couche centrale unique et les couches axiales de côté (1a, 1b) étant réticulées par les fils en biais (2, 3) s'étendant dans la première et la seconde direction, dans laquelle un motif élémentaire est formé de douze fils axiaux (1a, 1b) agencés en trois couches, dans laquelle les fils axiaux (1a) de la couche centrale sont placés en quinconce par rapport aux fils axiaux (1b) des couches de côté, liés par deux ensembles croisés de N fils en biais (2, 3) chacun, dans laquelle chaque fil en biais (2, 3) s'étendant dans l'une de la première et de la seconde direction passe en alternance sur six fils axiaux (1a, 1b) et sous six fils axiaux (1a, 1b) tout en croisant 2∗N fils (2, 3) s'étendant dans l'autre de la première et de la seconde direction.
  4. Armature textile triaxiale selon la revendication 3, caractérisée en ce que la couche centrale de fils (1a) comprend des fils axiaux (1a) qui ont une dimension de section transversale qui a au moins deux fois la dimension de la section transversale des fils axiaux (1b) des couches de côté.
  5. Armature textile triaxiale selon l'une des revendications précédentes, caractérisée en ce que les fils (1a) de la couche centrale comprennent un matériau ayant une masse volumique spécifique faible, la masse volumique spécifique du matériau étant dans la plage de 20 kg/m3 et 300 kg/m3.
  6. Procédé de production d'armatures textiles triaxiales selon la revendication 1 ou 2, utilisant dans un procédé de tressage une machine à tresser comprenant deux rangées circulaires adjacentes de roues à encoches (4) qui déplacent des bobines de fil chargées de fils en biais (2, 3) en s'échangeant leurs porte-bobines (9), et deux rangées circulaires de tubes (5) pour introduire des fils axiaux (1b) au niveau d'un axe de rotation de chaque roue à encoches (4), dans lequel des tubes centraux (6) sont placés près de l'intersection des diagonales de la figure formée par les axes de rotation de quatre roues à encoches (4) adjacentes et dans lequel seuls des fils axiaux (1a) sont introduits dans ces tubes centraux (6).
  7. Procédé selon la revendication 6, caractérisé par l'utilisation d'une machine à tresser dans laquelle les deux rangées adjacentes de roues à encoches (4) sont placées de façon concentrique sur un disque (13).
  8. Procédé selon la revendication 6 ou 7, caractérisé par l'utilisation d'une machine à tresser dans laquelle le nombre d'encoches des roues (4) diffère entre les deux rangées afin d'atteindre une même vitesse périphérique, le rapport du nombre d'encoches des roues entre une rangée externe et interne étant égal au rapport entre le diamètre de roues (4) dans la rangée externe et le diamètre des roues dans la rangée interne.
  9. Procédé selon l'une des revendications 6 à 8 précédentes, caractérisé par l'utilisation d'une machine à tresser dans laquelle les deux plages adjacentes de N roues à encoches (4) sont disposées de façon symétrique à l'intérieur ou à l'extérieur d'une bague cylindrique ou sphérique.
  10. Procédé selon l'une des revendications 6 à 9 précédentes, caractérisé par l'utilisation d'une machine à tresser dans laquelle le nombre d'encoches des roues (4) est de trois sur les deux rangées.
  11. Procédé de production d'armatures textiles triaxiales selon la revendication 4, utilisant dans un procédé de tressage une machine à tresser comprenant deux rangées circulaires adjacentes de roues à encoches (4) qui déplacent des bobines de fil chargées de fils en biais (2, 3) s'échangeant leurs porte-bobines (9), et trois rangées circulaires de tubes (5, 6) pour introduire des fils axiaux (1a, 1b) comprenant des tubes centraux (6) et des tubes de côté (5) et, dans lequel chaque tube central (6) est placé près de l'intersection des diagonales de la figure formée par les axes de rotation de quatre roues à encoches (4) adjacentes, dans lequel les tubes de côté (5) sont situés au niveau d'axes de rotation des roues à encoches (4) et dans lequel tous les fils axiaux (1a) qui sont introduits dans le tube central (6) ont une dimension de section transversale au moins deux fois plus grande que celle des fils axiaux (1b) qui sont introduits dans les tubes de côté (5).
  12. Procédé selon la revendication 11, caractérisé par l'utilisation d'une machine à tresser dans laquelle les deux rangées adjacentes de roues à encoches (4) sont placées de façon concentrique sur un disque (13).
  13. Procédé selon la revendication 11 ou 12, caractérisé par l'utilisation d'une machine à tresser dans laquelle le nombre d'encoches des roues (4) diffère entre les deux rangées afin d'atteindre une même vitesse périphérique, le rapport du nombre d'encoches des roues entre une rangée externe et interne étant égal au rapport entre le diamètre de roues (4) dans la rangée externe et le diamètre des roues dans la rangée interne.
  14. Procédé selon la revendication 11, 12 ou 13, caractérisé par l'utilisation d'une machine à tresser dans laquelle les deux plages adjacentes de N roues à encoches (4) sont disposées de façon symétrique à l'intérieur ou à l'extérieur d'une bague cylindrique ou sphérique.
  15. Pièce en matériau composite, notamment pièces de construction automobile et/ou aéronautique telles que des poutrelles, des montants avant, des montants milieu, des montants arrière, des pièces de suspension de moteur, des poutres de renfort ou de renforcement, comprenant au moins une armature textile triaxiale selon l'une des revendications 1 à 5 conjointement à un matériau résineux ou plastique.
EP12196166.8A 2012-12-07 2012-12-07 Armature textile triaxiale, procédé de production d'armatures textiles triaxiales et pièce en matériau composite Active EP2740824B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES12196166T ES2763326T3 (es) 2012-12-07 2012-12-07 Armadura textil triaxial, procedimiento de producción de armaduras textiles triaxiales y pieza de material de composite
EP12196166.8A EP2740824B1 (fr) 2012-12-07 2012-12-07 Armature textile triaxiale, procédé de production d'armatures textiles triaxiales et pièce en matériau composite

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EP12196166.8A EP2740824B1 (fr) 2012-12-07 2012-12-07 Armature textile triaxiale, procédé de production d'armatures textiles triaxiales et pièce en matériau composite

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EP2740824A1 EP2740824A1 (fr) 2014-06-11
EP2740824B1 true EP2740824B1 (fr) 2019-09-25

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EP3771757B1 (fr) 2019-07-29 2022-07-13 Georges Cahuzac Armature triaxiale multicouche et machine de tissage circulaire
CN113584682B (zh) * 2021-07-21 2023-03-24 航宸石家庄新材料科技有限公司 一种生产平面三向织物的圆织机

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EP0113196A1 (fr) 1982-12-01 1984-07-11 Cambridge Consultants Limited Structure tubulaire tissée
FR2753993B1 (fr) 1996-10-01 1998-11-27 Aerospatiale Structure tubulaire tressee pour piece composite, sa realisation et ses applications
FR2804133B1 (fr) 2000-01-20 2002-04-05 Inst Textile De France Machine de tressage perfectionnee
FR2884836B1 (fr) 2005-04-26 2007-06-15 Georges Jean Joseph An Cahuzac Tresseuse circulaire multicouche
FR2918599B1 (fr) 2007-07-13 2009-08-14 Chomarat Composites Soc Par Ac Produit textile pour structure sandwich et procede de fabrication

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