PIEZOELECTRIC CONSTANT MEASURING DEVICE AND PIEZOELECTRIC CONSTANT MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric constant measuring device that has a simple configuration and can accurately and quickly measure a piezoelectric constant of a piezoelectric material.;SOLUTION: The piezoelectric constant measuring device 1 comprises: load application means 2 that applies a static load on a piezoelectric material PI and applies a plurality of pulse loads while the static load is applied; load measuring means 3 that measures the static load and the plurality of pulse loads applied to the piezoelectric material PI; charge amount measuring means 4 that measures the amount of charge generated in the piezoelectric material PI by the static load and the plurality of pulse loads being applied thereto; and piezoelectric constant measurement control means 5 that measures, from the measured amount of charge, the amount of change in the amount of a plurality of pulse-like charges generated due to the plurality of pulse loads, and calculates a piezoelectric constant from the amount of change and the measured pulse loads.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT