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8 December 1999 In-process detection of weld defects using laser-based ultrasound
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Proceedings Volume 3852, Harsh Environment Sensors II; (1999)
Event: Photonics East '99, 1999, Boston, MA, United States
Laser-based ultrasonic (LBU) measurement shows great promise for on-line monitoring of weld quality in tailor-welded blanks. Tailor-welded blanks are steel blanks made from plates of differing thicknesses and/or properties butt- welded together, they are used in automobile manufacturing to produce body, frame, and closure panels. LBU uses a pulsed laser to generate the ultrasound and a continuous wave laser interferometer to detect the ultrasound at the point of interrogation to perform ultrasonic inspection. LBU enables in-process measurements since there is no sensor contact or near-contact with the workpiece.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stephen W. Kercel, Roger A. Kisner, Marvin B. Klein, Gerald David Bacher, and Bruno F. Pouet "In-process detection of weld defects using laser-based ultrasound", Proc. SPIE 3852, Harsh Environment Sensors II, (8 December 1999);

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