Certain characteristics of electrically excitable mechanical resonances in PZT 65/35

Summary

In this paper, we examine certain characteristics of two electrically excitable mechanical resonances exhibited by two different specimens of the ferroelectric ceramic PZT 65/35. In particular, we determine the phase angle between the charge and the driving voltage, the current in the circuit, the amplitude of the mechanical displacement, and the electrical power dissipated in driving the specimens at each of these resonances for increasing amplitude of the driving voltage. It is shown that the phase angle, the current and the power dissipated have similar characteristics for the two resonances; but their mechanical displacements have entirely disparate features. In one case the amplitude increases more than linearly with respect to the driving voltage, whereas the contrary is true in the other case.