In-process detection of weld defects using laser-based ultrasound

Stephen W. Kercel; Roger A. Kisner; Marvin B. Klein; Gerald David Bacher; Bruno F. Pouet

doi:10.1117/12.372829

8 December 1999 In-process detection of weld defects using laser-based ultrasound

Stephen W. Kercel, Roger A. Kisner, Marvin B. Klein, Gerald David Bacher, Bruno F. Pouet

Proceedings Volume 3852, Harsh Environment Sensors II; (1999) https://doi.org/10.1117/12.372829
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

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.

Citation Download Citation

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); https://doi.org/10.1117/12.372829

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