Effects of Stress Ratio on Fatigue Behavior of CFRP Laminates and Modeling

Influences of stress ratio on constant amplitude fatigue behavior of CFRP laminates have been examined and a rational fatigue life prediction method has been developed. First, constant-amplitude fatigue tests are performed at room temperature on a quasi-isotropic CFRP laminate [45/90/-45/0] 2s for six kinds of stress ratios. The experimental results show that fatigue strength is lower for fatigue loading with larger amplitude. It is observed...