Hybrid three-dimensional woven/laminated struts for...

D - Textiles – Paper – 03 – D

Patent

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D03D 15/00 (2006.01) B29C 70/24 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2704966

A woven preform used to reinforce a composite structure which includes a central portion having a plurality of interwoven layers. The preform also includes first and second end portions having a plurality of independent woven layers that are integrally woven with the plurality of interwoven layers in the central portion and which extend along the entire length the preform. Interspersed between the plurality of independent woven layers in the first and second end portions are bias plies. The first and second end portions can have through thickness reinforcements comprising reinforcement fibers that traverse through the independent woven layers and the bias plies, locking them together.

L'invention porte sur une préforme tissée utilisé de renfort d'une structure composite, dont la partie centrale présente plusieurs couches entrelacées. Ladite préforme comporte également une première et une deuxième extrémité présentant plusieurs couches tissées indépendantes intégralement tissées avec les couches entrelacées de la partie centrale et qui s'étendent sur la totalité de la longueur de la préforme. Intercalées entre les couches tissées indépendantes de la première et de la deuxième extrémité se trouvent des armatures textiles précontraintes. La première et de la deuxième extrémité peuvent comporter des renforts traversants comprenant des fibres, traversant les couches tissées indépendantes et les armatures textiles, et les solidarisant.

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