Hybrid three-dimensional woven/laminated struts for composite structural applications

摘要

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.

主权项

1. A woven preform id="REI-00002" date="20151027" used to reinforceid="REI-00002" id="REI-00003" date="20151027" for use as reinforcement in id="REI-00003" a composite structure comprising:
a central portion having a plurality of interwoven layers; a first end portion having a plurality of independent woven layers; a second end portion having said plurality of independent woven layers; wherein plies of said plurality of independent woven layers extend through the entire length of said preform wherein said plies are integrally woven in said central portion to form a three dimensional fabric construction; and wherein said plies are independently woven in said end portions to form a stack of woven fabric; wherein bias plies are interspersed between said plies of said plurality of independent woven layers plies in said first and second end portions.