Mixed Mode Fracture Analysis of Multiple Interface Cracks

Abstract

This paper contains a theoretical formulation of multiple interface cracks in two bonded dissimilar half planes subjected to in-plane traction. The distributed dislocation technique is used to construct integral equations for a dissimilar mediums weakened by several interface cracks. These equations are of Cauchy singular type at the location of dislocation, which are solved numerically to obtain the dislocation density on the faces of the cracks. The dislocation densities are employed to evaluate the modes I and II stress intensity factors for multiple interface cracks. Numerical calculations are presented to show the interation effects of interface cracks on the stress intensity factors.