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Proceedings Paper

Surface Inspection Of Laser Treated Materials Via Three Dimensional Computer Color Contouring
Author(s): R. W. Wygant; S. P. Almeida; R. J. Churchill; J. M. Glass; H. P . Groger
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Paper Abstract

The inspection of laser treated stainless steel alloy is performed via a microcomputer on-line to a digitizer which records interferograms produced using projection interference techniques. Heating was performed by an high power industrial carbon dioxide laser. Special image processing algorithms were developed to extract the heat variation features from the surrounding background. The results reveal the quality of the laser heat treatment and its effect on different areas of the alloy. Lateral and depth resolutions of the order several microns were achieved. A topological mapping of the treated material is presented as the three dimensional color (or shades of gray) contour of the surface.

Paper Details

Date Published: 16 January 1988
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Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); doi: 10.1117/12.968852
Show Author Affiliations
R. W. Wygant, Virginia Polytechnic Institute and State University (United States)
S. P. Almeida, Virginia Polytechnic Institute and State University (United States)
R. J. Churchill, American Research Corporation of Virginia (United States)
J. M. Glass, American Research Corporation of Virginia (United States)
H. P . Groger, American Research Corporation of Virginia (United States)


Published in SPIE Proceedings Vol. 0952:
Laser Technologies in Industry

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