Patent ID: 6047600
Filing Date: 2000-04-11
Classification: G01N,Y10S

Abstract:
A method for determining the uniformity of the piezoelectric effect in a piezoelectric material (PEM) comprising:applying an acoustic wave to a plurality of points on a front surface of said PEM;detecting said acoustic wave at a plurality of points on a back surface of said PEM, each of said plurality of points of detection on said back surface corresponding to one of said plurality of points of application on said front surface of said PEM;determining a time-of-flight of said acoustic wave from each of said plurality of points of application of said acoustic wave to said front surface of said PEM to each of said plurality of corresponding points on said back surface of said PEM; and,determining said uniformity of said piezoelectric effect in said PEM by comparing each said time-of-flight at each said plurality of corresponding points on said back surface with said time-of-flight at each other of said plurality of corresponding points on said back surface of said PEM.