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28 March 1986 Thermal Sensing For Industrial Quality Control
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Some infrared sensing techniques for the industrial quality control of composite or stratified materials are described. The surface of the material is heated, typically by a coherent or incoherent light source, and the surface temperature evolution is monitored either by a single-spot infrared detector or by an infrared camera. Subsurface thermal discontinuities are detected by an analysis of the recorded signal. Signal-processing techniques using reference-subtraction either in the space- or in the time-domain are described which are particularly well-suited to the industrial inspection environment. Experimental results obtained with aluminum-plastics, aluminum-aluminum, and graphite--epoxy laminates are described.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Cielo, R. Lewak, and D. L. Balageas "Thermal Sensing For Industrial Quality Control", Proc. SPIE 0581, Thermosense VIII: Thermal Infrared Sensing for Diagnostics and Control, (28 March 1986);

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