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Proceedings Paper

Quantitative characterization of resistive defects in thick composites using step heating thermography
Author(s): Adel A. Badghaish; David C. Fleming
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Paper Abstract

Inspection of thick composite structures, such as Reinforced Thermosetting Resin (RTR) pipes used in the petroleum industry, using infrared thermography is difficult. This paper investigates the use of step heating thermography to increase the maximum detectable defect depth and describes techniques to quantitatively characterize defect depth and severity in thick composites. A procedure to simultaneously determine defect depth and thermal resistance from the early time surface temperature is described. The procedure is based on fitting the early time surface temperature profile over a defect to a one-dimensional three-layer analytical model. Experimental testing demonstrates the accuracy of the procedure.

Paper Details

Date Published: 17 March 2008
PDF: 12 pages
Proc. SPIE 6939, Thermosense XXX, 693916 (17 March 2008); doi: 10.1117/12.777064
Show Author Affiliations
Adel A. Badghaish, Florida Institute of Technology (United States)
David C. Fleming, Florida Institute of Technology (United States)

Published in SPIE Proceedings Vol. 6939:
Thermosense XXX
Vladimir P. Vavilov; Douglas D. Burleigh, Editor(s)

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