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On permeable cracks in a piezoelectric ceramic. 1, global energy release rate

Li, Shaofan; Morgan, Elise F.

UCB/SEMM-2002/03, Dept. of Civil and Environmental Engineering, University of California, Berkeley, 2002, 32 leaves (500/C23/2002/03)

A model is used to analyze permeable crack growth in a piezoelectric ceramic. The model takes into account the effect of surface charge distribution on the crack surfaces of the ceramic which may be caused by the discharge of the dielectric medium inside the crack, or charge separation due to surface separation of the poled piezoelectric matrix. In this study, a permeable crack is modeled as a vanishing thin, finite dimension, rectangular slit with surface charge deposited along the crack surface.

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