Method for making parts in composite material with thermoplastic matrix
First Claim
Patent Images
1. Fabrication process for parts from a composite material comprising a skin and stiffeners, the process comprising:
- separately fabricating stiffeners by lay-up, consolidation and shaping, starting from a strip of long fibers impregnated with thermoplastic resin;
placing the stiffeners on a tooling with a shape complementary to the shape of the part to be fabricated;
simultaneously fabricating and assembling the skin with the stiffeners by lay-up and continuous consolidation of strips of long fibers impregnated with thermoplastic resin, directly on the tooling on which the stiffeners are placed; and
cooling a strip that has just been deposited to a temperature below the melting temperature of the thermoplastic resin, prior to adding an additional strip heated at a temperature above the melting temperature of the thermoplastic resin to weld the strips together by diffusion.
1 Assignment
0 Petitions
Accused Products
Abstract
A process is proposed for the fabrication of parts with large dimensions formed of a skin (10) and stiffeners (12, 16) such as aircraft fuselage segments made of a composite material with a thermoplastic matrix. After stiffeners have been made separately by lay-up, consolidation and shaping, these stiffeners are placed on a tooling (23) and the skin (10) is simultaneously fabricated and assembled to the stiffeners (12, 16) by diffusion welding. More precisely, the skin (10) is laid up and continuously consolidated by the lay-up head (36) such that the required part is obtained directly.
167 Citations
10 Claims
-
1. Fabrication process for parts from a composite material comprising a skin and stiffeners, the process comprising:
-
separately fabricating stiffeners by lay-up, consolidation and shaping, starting from a strip of long fibers impregnated with thermoplastic resin;
placing the stiffeners on a tooling with a shape complementary to the shape of the part to be fabricated;
simultaneously fabricating and assembling the skin with the stiffeners by lay-up and continuous consolidation of strips of long fibers impregnated with thermoplastic resin, directly on the tooling on which the stiffeners are placed; and
cooling a strip that has just been deposited to a temperature below the melting temperature of the thermoplastic resin, prior to adding an additional strip heated at a temperature above the melting temperature of the thermoplastic resin to weld the strips together by diffusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification