Method and means for ultrasonic inspection

Details Method and means for ultrasonic inspection Method and means for ultrasonic inspection

1979-10-19

1981-12-29

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

73620, G01N 2904

Patent

active

043076122

ABSTRACT:
Ultrasonic inspection of a structure such as steel tubing is enhanced by moving the ultrasonic wave transmitter and receiver through the pipe and periodically injecting an ultrasonic pulse into the tube. Reflected waves are received during a sample period after each pulse injection. By proper selection of linear displacement between pulses and the sample time interval, the time reference of received signals can be adjusted whereby signals reflected from only one direction are coherently added.

REFERENCES:
patent: 3295362 (1967-01-01), Wood et al.
patent: 4213184 (1980-07-01), Fasching
"Donar: A Computer Processing System to Extend Ultrasonic Pulse Echo Testing", by Lees et al., from Ultrasonics, Jul. 1973.

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