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Transient response of an annular interfacial crack between dissimilar piezoelectric layers under mechanical and electrical impacts

The dynamic response of an annular interfacial crack between dissimilar piezoelectric layers subjected to mechanical and electrical impact loadings is investigated. Laplace and Hankel transforms are employed to reduce the mixed boundary value problem to Cauchy singular integral equations. The integral equations are further reduced to a system of algebraic equations with the aid of Jacobi polynomials. The dynamic field intensity factors and dynamic energy release rates are determined. Numerical results reveal the effects of crack configuration, electrical impact loading on crack propagation, and growth.