SOME DEVELOPMENTS IN THE RESEARCH ON FRACTURE OF PIEZOELECTRIC MATERIALS

摘要

An overview on some recent development in the research on fracture of piezoelectric materials is presented here with the focus on the failure mechanisms of piezoelectric ceramics under mechanical and/or electrical loading and the failure criteria. The overview is given on three aspects: 1) strip polarization saturation model and strip dielectric breakdown model, 2) conductive cracks and charge-free zone model, and 3) phase field simulations.