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3 December 1993 Forced diffusion thermography
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Abstract
A new thermographic technique, Forced-Diffusion Thermography (FDT), is described. Forced-Diffusion Thermography uses a continuously projected dynamic heat pattern to set up appropriate combinations of lateral and through-depth heat flow in structures. A synchronous imaging IR camera is used to measure the structures thermal response to a patterned heat flux in order to find flaws such as cracks and delaminations. A numerical model of the technique is used to describe the thermal responses to cracks and delaminations. Experimental data is presented for the case of a fatigue crack in a 2 mm thick aluminum skin.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jon R. Lesniak and Bradley R. Boyce "Forced diffusion thermography", Proc. SPIE 2001, Nondestructive Inspection of Aging Aircraft, (3 December 1993); https://doi.org/10.1117/12.163835
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