Ultrasonic testing and image processing for in-progress weld inspection
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Scan day: 05 March 2014 UTC
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Description: by Shaun Lawson
Ultrasonic testing and image processing for in-progress weld inspection Ultrasonic testing and image processing for in-progress weld inspection Ultrasonic methods are widely used in the non-destructive testing of all manner of welded joints. However, due to the practical difficulties involved in the NDT of incomplete or hot welds, much of this testing is undertaken after a joint is completed. Alternatively, if defects could be detected between weld runs then potentially large cost savings would result from reduced wastage of materials and gouging/repair times. In addition, if the NDT results could be interpreted fast enough (e.g. by an automated system) then weld process control may also be possible. This short artcicle describes some of the problems to be encountred when using pulse echo methods for flaw detection in incomplete welds. As an alternative, Time of Flight Diffraction methods are proposed and image processing techniques for automatic defect detection are described.
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| Page title: | Ultrasonic testing and image processing for in-progress weld inspection |
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| Date | Creation Date: 26-oct-1996 Expiration Date: 25-oct-2014 |