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Fatigue behavior of carbon/epoxy composites under pretorsion and low‐energy impact effects

Abstract This work presents a systematic study of the fatigue behavior and macroscopic analysis of carbon/epoxy [0/45/90/‐45]2S quasi‐isotropic composite laminates. The failure mechanism and fatigue effects of the composites under pretorsional twist and low‐energy impact were investigated in this research. The coupling effects of the laminates under twist and low‐energy impact and the residual tensile strength and the S‐N curve under various stress levels were also studied.