Abstract
The finite element analysis technique and the cohesive zone model are used to build a physical model of fibre reinforced metal laminates with a corrugate interfacial structure between metal and polymer to analyse the law of interfacial fracture toughness. The results suggest that an interface with a patterned structure has a relatively higher interfacial resistance ability than an interface with a common flat structure within limits. The ratio of stress intensity factor (KIC/K0) nearly increases linearly when the ratio of amplitude to wavelength (A/λ) is larger than 0·25; moreover, the variational trend of KIC/K0 is not linear when A/λ is smaller than 0·25, even the value is less than 1·0. The aforementioned results illustrate that the interfacial fracture toughness changes with the size and morphology regularly at some ranges and have some guidelines for experimental design of surface treatment.
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