Pipeline inspection device using ultrasonic apparatus for corros

Details Pipeline inspection device using ultrasonic apparatus for corros Pipeline inspection device using ultrasonic apparatus for corros

1984-04-12

1987-02-10

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73623, 73644, G01N 2904

Patent

active

046415297

ABSTRACT:
A pipeline inspection apparatus is disclosed for the detection of corrosion pit type defects, employing one or more ultrasonic transducers to produce a parallel beam for direction toward the pipe wall from inside a pipe, with a sufficiently large beam width to permit comparison of time displayed signal components in defect depth determination, with the signal propagating through a gaseous medium. An additional embodiment combines the same with photographic apparatus.

REFERENCES:
patent: 3780571 (1973-12-01), Wiesener
patent: 3810384 (1974-05-01), Evans
patent: 4285242 (1981-08-01), Braithwaite
patent: 4326155 (1982-04-01), Griebeler
patent: 4412315 (1983-10-01), Flournay
patent: 4418574 (1983-12-01), Flournay
patent: 4460920 (1984-07-01), Weber et al.

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