A novel model for determining the fatigue delamination resistance in composite laminates from a viewpoint of energy

A previous study indicated that the normalized fracture controlling parameter (strain energy release rate G normalized by fatigue delamination resistance Gcf) in the Paris-type law has advantages of lower exponents and data scatter to evaluate the fatigue delamination growth (FDG) behavior. To accurately determine the critical Gcf, which characterizes the real changing resistance against delamination growth, a novel model is proposed from a...