Measuring and testing – Vibration – By mechanical waves
Patent
1985-08-08
1987-09-08
Ciarlante, Anthony V.
Measuring and testing
Vibration
By mechanical waves
73622, 73638, G01N 2904
Patent
active
046915729
ABSTRACT:
A transducing device for contactless ultrasonic inspection of pipelines or tubings is provided. The device has a means for electromagnetically generating elastic waves within the wall of the pipeline or tubing to be inspected and means for mounting and moving said device along a pipeline or tubing. The generating means may be a magnet and at least one transmitting coil, with the transmitting coil arranged on one of the poles of the magnet. The poles of the magnet are directed towards the wall of the pipeline or tubing under inspection.
REFERENCES:
patent: 3850028 (1974-11-01), Thompson et al.
patent: 4092868 (1978-06-01), Thompson et al.
patent: 4307615 (1981-12-01), Robinson
patent: 4314479 (1982-02-01), Spijkerman
Krautcramer and Krautcramer, Ultrasonic Testing of Materials, second edition, 1977, pp. 8-11.
Maxfield, Kuramoto and Hulbert, "Using EMATS for High Temperature Ultrasonics," Through the Eyes of an Eagle, 11th World Conference on Nondestructive Testing (Conference of Nov. 3-8, 1985), vol. 2, pp. 917-924.
Homs Marinus H.
van den Berg Wilhemus H.
van Oorschot Bob P. J.
Ciarlante Anthony V.
Shell Oil Company
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