THE STRESS INTENSITY FACTOR OF A MODE-Ⅲ INTERFACE EDGE CRACK BETWEEN TWO DIFFERENT PIEZOELECTRIC MATERIALS

The electromechanical fields of two dissimilar piezoelectric materials containing an interface edge crack under anti-plane mechanical loads and in-plane electrical loads are analyzed. A general solution and the stress intensity factor are obtained in term of series expansion. The unknown constants are determined by boundary collocation method. Numeral results show that, under shear loading conditions, the stress intensity factor is independent of applied electric displacement and electric field.