Fiber texture for fabricating an aeroengine casing

Patent metadata

Field	Value
Publication number	US-10960613-B2
Application number	US-201815988385-A
Country	US
Kind code	B2
Filing date	May 24, 2018
Priority date	May 24, 2017
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A fiber texture presents the shape of a strip extending in a longitudinal direction over a determined length between a proximal portion and a distal portion, and in a lateral direction over a determined width between first and second lateral edges. The fiber texture presents three-dimensional or multilayer weaving. The proximal portion of the fiber texture includes an end portion extending in the lateral direction so as to be set back from at least one of the first and second lateral edges and over a determined width that is less than the width of the fiber texture. The end portion projects in the longitudinal direction from at least one longitudinal edge of the fiber texture, the end portion extending in the longitudinal direction between a first end connected to the fiber texture and a free, second end opposite from the first end.

First claim

The invention claimed is:

1. A fiber texture for fabricating a composite material casing, the fiber texture being for winding to form fiber reinforcement of a composite material casing, said fiber texture being in the form of a strip extending in a longitudinal direction over a determined length between a proximal portion and a distal portion, and in a lateral direction over a determined width between a first lateral edge and a second lateral edge, the fiber texture presenting three-dimensional or multilayer weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns;
wherein the proximal portion has an end portion extending in the lateral direction so as to be set back from at least one of the first and second lateral edges and over a determined width that is less than a width of said fiber texture, the end portion projecting in the longitudinal direction from at least one longitudinal edge of the fiber texture, the end portion extending in the longitudinal direction between a first end connected to the fiber texture and a free, second end opposite from the first end,
wherein the fiber texture includes a two-dimensional fabric layer extending from the longitudinal edge of the fiber texture from which the end portion projects and from one lateral edge of the end portion, the two-dimensional fabric layer presenting thickness that is less than the thickness of the fiber texture.

2. The fiber texture according to claim 1 , wherein the end portion projects in the longitudinal direction from first and second longitudinal edges of the fiber texture and has an intermediate position between the first and second lateral edges of the fiber texture.

3. A fiber texture, for fabricating a composite material casing, the fiber texture being for winding to form fiber reinforcement of a composite material casing,
said fiber texture being in the form of a strip extending in a longitudinal direction over a determined length between a proximal portion and a distal portion, and in a lateral direction over a determined width between a first lateral edge and a second lateral edge, the fiber texture presenting three-dimensional or multilayer weaving between a plurality of layers of warp yarns and a plurality of layers of weft yarns;
wherein the proximal portion has an end portion extending in the lateral direction so as to be set back from at least one of the first and second lateral edges and over a determined width that is less than a width of said fiber texture, the end portion projecting in the longitudinal direction from at least one longitudinal edge of the fiber texture, the end portion extending in the longitudinal direction between a first end connected to the fiber texture and a free, second end opposite from the first end,
wherein the end portion projects in the longitudinal direction from first and second longitudinal edges of the fiber texture and has an intermediate position between the first and second lateral edges of the fiber texture,
wherein the fiber texture includes a first two-dimensional fabric layer extending from the first longitudinal edge of the fiber texture and the first lateral edge of the end portion, and a second two-dimensional fabric layer extending from the second longitudinal edge of the fiber texture and the second lateral edge of the end portion, the first and second two-dimensional fabric layers presenting thickness less than the thickness of the fiber texture.

4. The fiber texture according to claim 1 , wherein the at least one longitudinal edge of the fiber texture and the free end of the end portion present a bevel shape.

5. The fiber texture according to claim 1 , wherein the first and second lateral edges of the end portion present a bevel shape.

6. The fiber texture according to claim 1 , wherein the distal portion or the proximal portion of the fiber texture includes a longitudinal edge presenting a bevel shape.

7. The fiber texture according to claim 3 , wherein the first and second longitudinal edges of the fiber texture and the free end of the end portion present a bevel shape, and wherein the distal portion of the fiber texture includes a longitudinal edge presenting:
a first portion of bevel shape that is inverted relative to the bevels of the first and second longitudinal edges of the fiber texture and of the free end of the end portion, and extending in the lateral direction from the first lateral edge of the fiber texture and over a width less than the width of the fiber texture;
a second portion of bevel shape that is inverted relative to the bevels of the first and second longitudinal edges of the fiber texture and of the free end of the end portion, and extending in the lateral direction from the first lateral edge of the fiber texture and over a width less than the width of the fiber texture; and
a third portion of rectilinear shape present between the first and second portions, the third portion extending in the lateral direction over a width corresponding to the width of the end portion of the proximal portion of the fiber texture.

8. A gas turbine casing made of composite material with fiber reinforcement comprising a plurality of superposed layers of fiber texture according to claim 1 , said fiber reinforcement being densified by a matrix.

9. The gas turbine aeroengine having a fan casing according to claim 8 .

10. The fiber texture according to claim 1 , wherein the distal portion of the fiber texture includes a longitudinal edge presenting one or more portions presenting a bevel shape.

Assignees

• Safran Aircraft Engines

Inventors

• Hellot Jérémy
• Corradini Sylvain
• Fabre Hubert Jean Marie

Classifications

• B29C70/24 Primary

  oriented in at least three directions forming a three-dimensional [3D] structure · CPC title

• B29C70/302 Primary

  Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination · CPC title

• D03D3/06

  Fabrics of varying width · CPC title

• D03D11/00

  Double or multi-ply fabrics not otherwise provided for · CPC title

• D03D1/00

  Woven fabrics designed to make specified articles · CPC title