Abstract
Piezoelectric materials are a key component in applications such as sensing, actuation and energy harvesting as they couple energy between the electrical and the mechanical domain. With increasing loads, the elastostriction and the electrostriction gain impact on the PZT transducer performance. A procedure to determine the nonlinear parameters is introduced and three different PZT ceramics are studied in comparison. The detailed investigation shows that the electrostriction is dominant in actuator applications, while the elastostriction is affecting sensor applications.
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