A fatigue-mechanism-based model was developed for predicting the fatigue lives of fiber reinforced metal laminates (FRMLs) under constant amplitude loading. The fatigue behaviors, including the crack growth and the delamination growth, of GLARE under constant amplitude loading following with a single overload were investigated experimentally, and the mechanism of the effect of an overload on the crack growth rates was identified. An equivalent crack closure model for predicting crack growth in FRMLs under variable amplitude loading was presented. All the models in this paper were verified by applying to GLARE respectively under constant amplitude loading and Mini-TWIST load sequence. Good agreement was achieved.
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