Article: Jeong WY, Earls CJ, Philpot WD and Zehnder AT (2012). “Inverse thermographic characterization of optically unresolvable through cracks in thin metal plates.” Mechanical Systems and Signal Processing 27: 634-650.
Abstract: The present research explores the feasibility of a novel non-contact means for the detection and characterization of small scale, open crack-like defects within thin metal plate components. The approach employs inexpensive infrared (IR) digital camera technology (e.g. approximate to$5000US) and sophisticated numerical and algorithmic means as part of an inverse solution framework aimed at inferring the nature (i.e. presence, size, orientation, etc.) of micro-scale defects that are below the optical resolution capability of the IR imaging system. The current work explores a technique for inferring the presence and character of optically unresolvable flaws penetrating metallic plate components (i.e. through cracks).
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