Abstract
3D triple-twill warp-lining woven composites (3DTTWLWC) has promising applications in many fields, but their multiaxial behavior is not clear. Herein, biaxial specimens of 3DTTWLWC are prepared and different experiments are performed. The results show that as the biaxial stress ratios (rbs) increases, the tensile/torsional stiffnesses and strengths decrease/increase and increase/decrease, respectively. Furthermore, under multiaxial-loading, the dominant damage pattern changed gradually from weft yarn breakage in the crack initiation zone to warp and binder yarn pullout in the failure zone. This work provides a reference for the structural design of 3DTTWLWC with significant engineering implications.
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