Woven fibrous structure for forming a casing preform

Patent metadata

Field	Value
Publication number	US-11230798-B2
Application number	US-201816642767-A
Country	US
Kind code	B2
Filing date	Aug 29, 2018
Priority date	Aug 30, 2017
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A fibrous structure having the form of a band extending in a longitudinal direction (X) over a given length between a proximal part and a distal part and in a lateral direction (Y) over a given width between a first side edge and a second side edge, the fibrous structure having a three-dimensional or multilayer weave between a plurality of layers of warp yarns or strands extending longitudinally and a plurality of layers of weft yarns or strands extending laterally, wherein a first portion of the fibrous structure present between the proximal part and an intermediate part of the fibrous structure includes carbon fiber weft yarns or strands and wherein a second portion of the fibrous structure present between the intermediate part and the distal part includes glass fiber weft yarns or strands.

First claim

The invention claimed is:

1. A fibrous structure having the form of a band extending in a longitudinal direction over a given length between a proximal part and a distal part and in a lateral direction over a given width between a first side edge and a second side edge, the fibrous structure having a three-dimensional or multilayer weave between a plurality of layers of warp yarns or strands extending longitudinally and a plurality of layers of weft yarns or strands extending laterally,
wherein a first rigid portion of the fibrous structure present between the proximal part and an intermediate part of the fibrous structure comprises carbon fiber weft yarns or strands and in that a second elastically deformable portion of the fibrous structure present between the intermediate part and the distal part comprises glass fiber weft yarns or strands.

2. The fibrous structure as claimed in claim 1 , wherein the glass fiber weft yarns or strands in the second portion are present on the side of an outer face of the structure.

3. The fibrous structure as claimed in claim 1 , wherein only a portion of the weft yarns or strands of the second portion are made of glass fibers, the other weft yarns or strands of the second portion being made of carbon fibers.

4. The fibrous structure as claimed in claim 1 , further comprising glass fiber warp yarns or strands present on the side of an outer face of the structure, the other warp yarns or strands of the fibrous structure being of carbon fibers.

5. The fibrous structure as claimed in claim 4 , wherein the glass fiber warp yarns or strands are present in a central zone laterally set back from the first and second side edges and which extends over a given width which is less than the width of said fibrous structure.

6. The fibrous structure as claimed in claim 1 , wherein the carbon fiber yarns or strands and the glass fiber yarns or strands present in the fibrous structure have a similar titer.

7. A fibrous preform for an aircraft casing comprising a winding over a plurality of turns of a fibrous structure as claimed in claim 1 , the first portion being located on the side of a radially inner face of the preform, and the second portion being located on the side of a radially outer face of the preform.

8. A gas turbine engine casing of a composite material, comprising a fibrous reinforcement consisting of a fibrous preform as claimed in claim 7 , and a matrix densifying the fibrous reinforcement.

9. The casing as claimed in claim 8 , wherein said casing is a gas turbine fan casing.

10. An aircraft gas turbine engine having a casing as claimed in claim 8 .

Assignees

• Safran Aircraft Engines

Inventors

• Le Hong Son
• Coupe Dominique Marie Christian
• Gabillon Martin
• Grelin Hervé
• Mahieu Jean-Noël
• Mousillat Sylvain
• Mortier Roland José Yann
• Raymond Frédéric

Classifications

• D06M23/14

  Processes for the fixation or treatment of textile materials in three-dimensional [3D] forms · CPC title

• D03D11/00

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

• D03D1/0052 Primary

  Antiballistic fabrics · CPC title

• B29B11/16

  comprising fillers or reinforcement {(non-woven fabrics per se D04H1/00, D04H3/00)} · CPC title

• D03D25/005 Primary

  Three-dimensional woven fabrics · CPC title