Ultrasonic method of determining nature of flaws by incremental

Details Ultrasonic method of determining nature of flaws by incremental Ultrasonic method of determining nature of flaws by incremental

1982-01-19

1984-10-09

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73600, 73602, 73621, 73629, 73633, G01N 2904

Patent

active

044753942

ABSTRACT:
In ultrasonic flaw inspection for determining the size of a flaw by emitting an ultrasonic wave to a subject via a probe and receiving an ultrasonic echo from said flaw existing inside said subject, changes in the propagation distances of the ultrasonic echoes before and after movement of said probe through a micro-small distance are compared with each other and the ultrasonic echoes are determined to result from the same flaw if the change width falls within a predetermined value determined by the angle of incidence of the ultrasonic wave and the directional angle.

REFERENCES:
patent: 3885224 (1975-05-01), Klahr
patent: 3996792 (1976-12-01), Kubota et al.
patent: 4206654 (1980-06-01), Keller et al.
patent: 4228804 (1980-10-01), Holasek et al.
patent: 4317370 (1982-03-01), Glenn

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