Green’s functions of internal electrodes between two dissimilar piezoelectric media

The generalized 2-D problem of a half-infinite interfacial electrode layer between two arbitrary piezoelectric half-spaces is studied. Based on the Stroh formalism, exact expressions for the Green’s functions of a line force, a line charge and a line electric dipole applied at an arbitrary point near the electrode edge, were prsented, respectively. The corresponding solution for the intensity factors of fields were also obtained in an explicit form. These results can be used as the foundational solutions in boundary element method (BEM) to solve more complicated fracture problems of piezoelectric composites.