Ultrasonic inspection of tube to tube plate welds

Details Ultrasonic inspection of tube to tube plate welds Ultrasonic inspection of tube to tube plate welds

1985-01-14

1986-06-10

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73629, 73640, 376252, G01N 2904

Patent

active

045935688

ABSTRACT:
To monitor the deterioration of a weld (10) between a tube (11) and tube plate (12) which has been repaired by a repair sleeve (14) inside the tube and brazed at one end to the tube, ultrasound from a crystal (21) at the end of a rod (24) is launched into the tube through the braze (15) and allowed to travel along the tube to the weld and be reflected back along the tube. The technique may also be used for the type of heat exchanger in which, during construction, the tubes are welded to the tube plate via external sleeves in which case the ultrasound is used in a similar manner to inspect the sleeve/tube plate weld.

REFERENCES:
patent: 4117733 (1978-10-01), Gugel
patent: 4361044 (1982-11-01), Kupperman et al.
patent: 4474064 (1984-10-01), Naruse et al.

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