Woven preforms, method for making a woven preform and three-dimensional composite structure

摘要

woven preforms, method for fabricating a woven preform and three-dimensional composite structure a woven preform used to reinforce a composite structure comprising a central part having a plurality of interlaced layers. The preform also includes first and second end portions having a plurality of independent woven layers which is integrally woven with the plurality of interlaced layers in the central portion and extends over the entire length of the preform. woven between the plurality of independent woven layers at the first and second end portions are offset folds. the first and second end portions may have thickness reinforcements comprising reinforcement fibers traversing the independent woven layers and the offset folds, blocking them together.