METHOD FOR ADJUSTING SOUND AXIS OF ULTRASONIC OSCILLATOR IN ACOUSTIC INTENSITY DISTRIBUTION MEASURING DEVICE

摘要

PROBLEM TO BE SOLVED: To make a sound axis approximately perpendicular to a measuring surface simply in a short time in a method for adjusting the sound axis of an acoustic intensity distribution measuring device for an ultrasonic oscillator. ;SOLUTION: In the first step, the intensity of ultrasonic waves emitted from an ultrasonic oscillator 53 is measured at each location in an A-plane with an X-coordinate x1 at a relatively small distance from the ultrasonic oscillator 53 in parallel with a measuring surface to detect peak points (1, 3, 5...) in the intensity. In the second step, the intensity of ultrasonic waves emitted from the ultrasonic oscillator 5 is measured at points (2, 4, 6...) in a B-plane obtained by moving the detected peak points to x2 in parallel with the X-axis perpendicular to the measuring plane so as to lengthen the distance from the ultrasonic oscillator 53 to adjust the angle of the ultrasonic oscillator 53 so that the intensity may reach its peak. By repeating the first and second steps n-times, the sound axis is converged in parallel with the X-axis to adjust the sound axis approximately perpendicularly to the measuring surface consequently.;COPYRIGHT: (C)2000,JPO