Anisotropic behavior and failure criterion of woven fabric reinforced double-layer flexible composite

In order to study failure mechanical property of fabric reinforced double-layer flexible composite,tensile properties test of partial axial samples were conducted.The tensile failure mechanism was analyzed,and predicted theoretical tensile strength based on different strength criteria were compared.The experiment made it clear that woven fabric reinforced double-layer flexible composite exhibits obvious anistropic behavior.Compared with Tsai-Hill failure criterion,harmonic cosine series failure criterion is better suited to tensile strength prediction for woven fabric reinforced double-layer flexible composite.The experimental result also revealed that the variation of tensile behavior indicators with off-axial angle was not in phase.