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Proceedings Paper

Laser-EMAT system for ultrasonic weld inspection
Author(s): Stephen Dixon; Christopher Edwards; Stuart B. Palmer
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Paper Abstract

The non-destructive testing of welded metal components is an area where significant savings in test cost can be made if preparation costs can be minimized. The biggest cost associated with preparation is grinding off the weld cap in order to facilitate the detection of defects that may be present just under the cap. In addition there are also potential savings to be made if the actual testing time can be reduced or if the tests can be performed at temperatures above which conventional contacting ultrasonic techniques cannot be used. This paper describes a non-contact ultrasonic method that uses a pulsed laser as generator and an electromagnetic acoustic transducer as detector which has the potential to interrogate the entire cross section of a weld.

Paper Details

Date Published: 4 February 1999
PDF: 8 pages
Proc. SPIE 3589, Process Control and Sensors for Manufacturing II, (4 February 1999); doi: 10.1117/12.339968
Show Author Affiliations
Stephen Dixon, Univ. of Warwick (United Kingdom)
Christopher Edwards, Univ. of Warwick (United Kingdom)
Stuart B. Palmer, Univ. of Warwick (United Kingdom)

Published in SPIE Proceedings Vol. 3589:
Process Control and Sensors for Manufacturing II
David M. Pepper, Editor(s)

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