Abstract
The behavior of a penny shaped crack in a three-dimensional piezoelectric ceramic strip under non-axisymmetric in-plane normal mechanical and electrical loads is analyzed based on the continuous electric boundary conditions of the crack surface. The potential theory, Hankel transform and Fourier series are used to obtain the systems of dual integral equations, which are then expressed as Fredholm integral equations. The singular mechanical and electric fields and all mode-I field intensity factors are obtained, and the numerical values of various field intensity factors for PZT-6B piezoelectric ceramic are shown graphically for an uniform load and a pair of concentrated load, respectively.
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