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Proceedings Paper

Equivalent wave field transform applied to pulse thermography in carbon composite samples
Author(s): M. Gershenson
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Paper Abstract

By using relationships between wave propagation and thermal diffusive propagation, it was shown that that one can transform from diffusive propagation into an equivalent wave field. The transformation results in sharp reflections with time delay proportional to the distance. The performance of the transform was tested on carbon composite samples using either xenon flash or incandescent quartz halogen light bulb excitations. The images are as good as any of the common techniques in use. The method can detect artificial damage locate at the depth of the 12th carbon mats. Application of back projection was also demonstrated. The combined use of the equivalent wave field transform and back projection improves both depth and lateral resolution. The technique is very efficient in term of computational load.

Paper Details

Date Published: 14 May 2018
PDF: 7 pages
Proc. SPIE 10661, Thermosense: Thermal Infrared Applications XL, 106610R (14 May 2018); doi: 10.1117/12.2302712
Show Author Affiliations
M. Gershenson, Consultant (Mexico)


Published in SPIE Proceedings Vol. 10661:
Thermosense: Thermal Infrared Applications XL
Douglas Burleigh; Jaap de Vries, Editor(s)

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