Ultrasonic nondestructive testing method

Details Ultrasonic nondestructive testing method Ultrasonic nondestructive testing method

1979-08-08

1981-03-03

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73600, G01N 2904

Patent

active

042533376

ABSTRACT:
Disclosed is a method for evaluating a discontinuity in an object. As used to measure the depth of a surface discontinuity in a plate type of object, the method includes the steps of generating a horizontally polarized shear wave in the object directed substantially along the axis of the discontinuity, passing the generated wave through an aperture to diffract the wave prior to its arrival at the discontinuity, detecting the wave after it has propagated through the discontinuity, and calculating the depth of the discontinuity by correlating the phase and amplitude of the detected wave to the phase and amplitude of a similar wave propagated in a region of the object which is free of discontinuities.

REFERENCES:
patent: 3115770 (1963-12-01), Cram et al.
patent: 3436958 (1969-04-01), Proctor

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