Anaysis of the Interfacial Stress Intensity Factors and Fatigue Crack Growth Behaviour for the Edge Interface Crack in the Dissimilar Materials

이종재료 접합재의 편측접합계면균열의 응력확대계수 해석 및 피로균열성장 해석

In this paper, the interfacial stress intensity factors( $K_{i}$＝ $K_1$＋i $K_2$) for the edge interface crack in the dissimilar materials(isotropic-isotropic materials, isotropic-composite materials) were analysed by BEM(Boundary Element Method). The fatigue crack growth behaviour was investigated by load constant fatigue test. From the experimental results, the relationship between da/dN and interfacial stress intensity facto, ( $K_{i}$ or $K_1$) can be expressed by Paris'law for homogeneous materials.s.s.