Screw dislocation interacting with twin interfacial edge cracks between two bonded dissimilar piezoelectric strips

This paper is concerned with the electroelastic potentials and the fracture parameters of a twin-edge-cracked piezoelectric bimaterial strip with a screw dislocation. By means of conformal mapping technique and the known dislocation solution, the antiplane displacement and inplane electric potentials are obtained in closed-form. The intensity factors and the energy release rate are extracted explicitly. In some limiting cases, the present solutions cover those in the literature. (C) 2003 Elsevier Ltd. All rights reserved.