An interface inclusion between two dissimilar piezoelectric materials

The generalized two-dimensional problem of a dielectric rigid line inclusio n, at the interface between two dissimilar piezoelectric media subjected to piecewise uniform loads at infinity, is studied by means of the Stroh theo ry. The problem was reduced to a Hilbert problem, and then closed-form expr essions were obtained, respectively, far the complex potentials in piezoele ctric media, the electric field inside the inclusion and the tip fields nea r the inclusion. it is shown that in the media, all field variables near th e inclusion-tip show square root singularity and oscillatory singularity, t he intensity of which is dependent on the material constants and the strain s at infinity. In addition, it is found that the electric field inside the inclusion is singular and oscillatory too, when approaching the inclusion-t ips from inside the inclusion.