Method and device for locating and characterizing flaws in a kno

Details Method and device for locating and characterizing flaws in a kno Method and device for locating and characterizing flaws in a kno

1985-01-25

1986-12-16

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

G01N 2904

Patent

active

046287370

ABSTRACT:
The ultrasonic pulse-echo method for locating and characterizing flaws in a partly submerged metal structure utilizes a device comprising an acoustic antenna (3), means (18) for preprocessing the echo signals, data transmission means (23-23') and a central processing unit (6).

REFERENCES:
patent: 3426585 (1969-02-01), Zemanek, Jr. et al.
patent: 4001764 (1977-01-01), Holland et al.
patent: 4102203 (1978-07-01), Sylvester et al.
patent: 4128011 (1978-12-01), Savage
patent: 4481818 (1984-11-01), Hellquist
H. Crohas et al., Oil & Gas Journal, Damage-Detection Monitoring Method for Offshore Platforms is Field-Tested, vol. 80, No. 8, Feb. 1982, pp. 94,99, 100 and 103.

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