Abstract

Heat generation, piezoelectric property and fracture of PZT ceramics were investigated applying a large pulsed input power. Heat generation in low-Qm material was larger than in high-Qm one. Nonlinear phenomena were revealed in low-Qm material at high voltage power. The values of k31 were roughly constant, Qm values decreased with increasing driving time. Applying a pulsed input power, however a fracture was suppressed in low-Qm material.

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