Airbus Operations (s.a.s.)

Airbus Operations Gmbh

Compagnie Generale Des Etablissements Michelin

Alstom Transport Technologies

Ecole Nationale Supérieure Des Arts Et Industries Textiles (ensait)

Xavier Legrand

Philippe Blot

Christophe Le Clerc

Richard Cornille

Julien Charles

Dominique Guittard

Emigliano Campus

Marc-Antoine Colot

Mathieu Piana

Georgi Tsarvarishki

Pascal Vinot

Christope Marchand

Alain Cavet

Joel Besnier

François Boussu

Pascal Ghys

Younes Naguib

Hubert Ostyn

Guillaume Tanchaud

Geneviève Pineau

Joël Besnier

Clément Dufour

A method of manufacturing a plurality of reinforcing element preforms, involving the steps of: positioning reinforcing elements on the external surface of a die; assembling the reinforcing elements thus positioned with one another so as to form a textile sleeve with a longitudinal axis and surrounding the die; moving the sleeve longitudinally toward a multi-cavity mandrel having an elongate overall shape, the multi-cavity mandrel having on its external surface a plurality of longitudinal cavities which are distributed, when viewed in cross section, around the periphery of the external surface; forming the sleeve on the plurality of peripheral cavities so that the sleeve conforms to the shape of the multi-cavity mandrel and thus adopts the shape of a set of reinforcing element preforms.

Method for manufacturing a plurality of preforms for reinforcing members

A weaving process for direct manufacture of three-dimensional structures with bidimensional walls with corners, without the need for sewing or other assembly between two ridges. The weaving is made by transforming weft threads into warp threads for making at least one face. The process is particularly adapted for the weaving of reinforcing elements for composite structures of corner fitting type.

Three-dimensional surface weaving

A fiber structure that can be embedded in a matrix for obtaining a piece made of composite material, includes a first fiber element having a first support surface, at least one L-shaped fiber element having a base that is flattened against the support surface of the first fiber element at a junction zone and a wing that is not flattened against the first fiber element, and another fiber element having one part flattened against the wing of the at least one L-shaped fiber element. The elements are assembled by tapping fibers from a second surface of the first fiber element so as to form loops, at least certain fibers being oblique relative to the second surface, in a plane that is perpendicular to the junction zone, wherein certain loops of the oblique fibers protrude to the outside of the outer surface of a wing of at least one L-shaped fiber element.

Assembly of fibrous elements for obtaining a part made of a composite

A weaving method that makes it possible to directly produce three-dimensional structures having two-dimensional walls with corners, without requiring sewing or other joining between two edges. The weave is created by turning weft threads () into warp threads to create at least one face. The method is particularly suitable for weaving reinforcing pieces for composite structures such as three-dimensional corner reinforcements.

A weaving loom including a mechanism drawing-in threads, for insertion of picks, and for formation of a weaving shed, so as to render possible formation of a continuous angle or corner by a thread during weaving. The loom preferably also includes a vertical offset system, so that it is possible to weave a three-dimensional surfacic structure, the threads of which are continuous between the faces and at the level of the edges. The loom can be configured particularly for manufacture of continuous tridedral corners that are used as reinforcements for composite structures.

System for weaving a continuous angle

Growing community of inventors

Roubaix, France

Xavier Legrand