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Proceedings Paper

Forced diffusion thermography
Author(s): Jon R. Lesniak; Bradley R. Boyce
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Paper 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.

Paper Details

Date Published: 3 December 1993
PDF: 11 pages
Proc. SPIE 2001, Nondestructive Inspection of Aging Aircraft, (3 December 1993); doi: 10.1117/12.163835
Show Author Affiliations
Jon R. Lesniak, Stress Photonics Inc. (United States)
Bradley R. Boyce, Stress Photonics Inc. (United States)

Published in SPIE Proceedings Vol. 2001:
Nondestructive Inspection of Aging Aircraft
Michael T. Valley; Nancy K. Del Grande; Albert S. Kobayashi, Editor(s)

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