公开(公告)号：US20030061883A1

公开(公告)日：2003-04-03

申请号：US10230148

申请日：2002-08-29

Applicant: National Inst. of Advanced Ind. Science and Tech.

Inventor： Masaaki Ichiki ,  Koichi Ozaki ,  Tokio Kitahara ,  Makoto Tanaka

IPC: G01N003/00

CPC classification number: G01R29/22 ,  G01N3/08

Abstract: The present invention provides a method and apparatus mainly for measuring mechanical properties, electrical properties and transducer properties (e.g., electromechanical coupling constant) of piezoelectrics, wherein three measurement specimens of the same material and the same dimension, each having parallel planes, and two insertion plates of the same material and the same dimension, each having known mechanical properties, are stacked alternately, a load is applied to these measurement specimens and insertion plates via the measurement specimens located on both end sides, the displacements in the direction of application of the load are measured before and after application of the load, and an elastic constant of the measurement specimen is determined based on those displacements, and the measurement of the electromechanical coupling constant is applied to the piezoelectrics by using the same apparatus under short-and-open circuit conditions.

Abstract translation: 本发明提供了一种主要用于测量压电体的机械性能，电性能和换能器特性（例如，机电耦合常数）的方法和装置，其中具有相同材料和相同尺寸的三个测量样品各自具有平行的平面和两个插入 具有相同材料和相同尺寸的具有已知机械性能的板交替堆叠，通过位于两端侧的测量样本将这些测量样本和插入板施加负载，施加方向上的位移 在施加负载之前和之后测量负载，并且基于这些位移来确定测量样本的弹性常数，并且通过使用相同的装置在短路和断开的情况下将机电耦合常数的测量值施加到压电体 电路条件。