Method of measuring a sound pressure distribution in a solid body due to a ultrasonic probe by using photoelasticity.

摘要

The present invention presents a method of measuring an sound pressure distribution in a solid body due to an ultrasonic probe by using photoelasticity, characterized in that for the purpose of evaluating and authorizing the characteristics of an ultrasonic probe used for non-destructive test utilizing an ultrasonic wave, the information of the sound pressure distribution pulse, such as the waveform of the ultrasonic pulse emitted from the ultrasonic probe into the solid body, an sound pressure distribution on the waveform, and the change in its travelling process, is quantitatively evaluated from the synthesized picture obtained by synthesizing two pictures in which the principal axis of a polarizer is different by 45 DEG , and by using a photoelastic test apparatus of the linear polarization type using a stroboscope light source.