Corner region ultrasonic inspection device

Details Corner region ultrasonic inspection device Corner region ultrasonic inspection device

1983-10-13

1985-08-06

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73634, 73635, 73637, 376249, G01N 2904, G21C 1700

Patent

active

045328080

ABSTRACT:
A method and device for ultrasonically inspecting the corner region formed by the joining of a pair of cylindrical conduits is disclosed. Ultrasonic sound beams (62) are transmitted beneath inner surface (12) of the first conduit at an oblique angle resulting in a shallow refracted sound path (74) through the solid corner region (84). Sound energy (76) reflected by the presence of a radially oriented crack (67) within the desired zone of interest (66) passes (80) out of the solid (84) for detection. A device having an ultrasonic transmitter (44) and a directional receiver (60) is disclosed carrying out the inspection method according to the present invention.

REFERENCES:
patent: 3863496 (1975-02-01), Hiramatsu et al.
patent: 4117733 (1978-10-01), Gugel

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