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The dynamic fracture problem for a functionally graded piezoelectric slab containing a center crack parallel to the free boundaries is considered in this study. It is assumed that the electroelastic properties of the medium vary continuously in the thickness direction, and that the slab is under inplane mechanical and electric impact loadings. Integral transform techniques and dislocation density functions are employed to reduce the problem to the solutions of a system of singular integral eqations. The dynamic stress and electric displacement intensity factors versus time are presented for various values of dimensionless parameters representing the crack size, the material non-homogeneity and the loading combination.

Transient Response of a Symmetric Functionally Graded Piezoelectric Slab with a Parallel Crack under Electromechanical Impact