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Proceedings Paper

Thermal Sensing For Industrial Quality Control
Author(s): P. Cielo; R. Lewak; D. L. Balageas
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Paper Abstract

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.

Paper Details

Date Published: 28 March 1986
PDF: 8 pages
Proc. SPIE 0581, Thermosense VIII: Thermal Infrared Sensing for Diagnostics and Control, (28 March 1986); doi: 10.1117/12.950885
Show Author Affiliations
P. Cielo, National Research Council Canada (Canada)
R. Lewak, Tecrad Inc. (Canada)
D. L. Balageas, Office National d'Etudes et de Recherches Aerospatiales (France)


Published in SPIE Proceedings Vol. 0581:
Thermosense VIII: Thermal Infrared Sensing for Diagnostics and Control
Herbert Kaplan, Editor(s)

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