Nonuniform domain switching for interfacial crack subject to two- parameter crack tip fields

Abstract eng:
This paper deals with a mode III interfacial crack subject to anti-plane stress and in-plane electric fields under non-uniform ferroelectric-ferroelastic domain switching. The analysis focuses on the electric regulation effect of ferroelectric fracture properties. The electric field changes the size of asymmetric domain switching zone. Employing the weight function method, we obtain the switch toughening effect for stationary and quasi-static steady-state growing cracks, respectively. The research will give us ideas to control fracture properties of ferroelectric composites by altering the electric field.

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