Influence of Coupling Effects on Mode II Interlaminar Fracture Toughness in CFRP Laminates with 0º/45ºInterlayer

Interlaminar fracture toughness in carbon fiber reinforced plastics has been studied primarily using unidirectional or symmetric laminates. However, even quasi-isotropic laminates, delamination caused by an out-of-plane impact could result asymmetric, partial Thus, evaluating the interlaminar asymmetric particularly that of Mode II associated with resistance, is necessary. Asymmetric laminates coupling effects, which cause warpage twisting due to thermal shrinkage derived from molding process. In this study, based on reports Verchery et al., we manipulated stacking sequences generate zero stiffness. Subsequently, was experimentally and analytically examined non-zero components. The results demonstrated slightly higher components than those addition, crack tip geometry significantly influenced effects.