Closed-form solutions, expressed as exponential integrals, were derived for a constantly moving screw dislocation in a piezoelectric bimaterial having an imperfect interface. This interface was mechanically compliant and dielectrically weakly (or highly) conducting. The electro-elastic fields due to the moving dislocation, involving stresses, strains, electric displacements and electric fields, were obtained for the bimaterial. The derived solutions were valid when the velocity of the screw dislocation was below the Bleustein-Gulyaev wave-speeds in the 2 piezoelectric half-planes. This restriction was different to that in a perfectly-bonded bimaterial; where the velocity of the screw dislocation had to be below the piezoelectrically stiffened bulk shear wave speeds of the 2 piezoelectric half-planes. Numerical results were presented in order to demonstrate the influence of the interface imperfection, and velocity of the moving dislocation, upon the electroelastic fields in the piezoelectric bimaterial.

A Moving Screw Dislocation Interacting with an Imperfect Piezoelectric Bimaterial Interface. X.Wang, E.Pan: Physica Status Solidi B, 2007, 244[6], 1940-56