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Resonant piezoelectric devices are driven under high power condition. In such condition, a nonlinear piezoelectric vibration becomes apparent and this nonlinearity should be taken into account in the design procedure using the finite elemental method (FEM). The purpose of this study is to introduce the nonlinear parameter to the FEM and to establish the method for measuring the nonlinear parameter...
Hard-type piezoelectric devices usually need to be driven under a high vibration level. However, they exhibit nonlinearity under high stress, which must be taken into account. This study investigates the nonlinear behavior of piezoelectric transducers. The burst-mode method was employed to measure the longitudinal vibration velocity of both hard- and soft-type piezoelectric transducers after excitation...
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