From Event: SPIE Commercial + Scientific Sensing and Imaging, 2017
Passive thermography has been shown to be an effective method for in situ and real time nondestructive evaluation (NDE) to measure damage growth in a composite structure during cyclic loading. The heat generation by subsurface flaw results in a measurable thermal profile at the surface. This paper models the heat generation as a planar subsurface source and calculates the resultant temperature profile at the surface using a three dimensional quadrupole. The results of the model are compared to finite difference simulations of the same planar sources.
William P. Winfree, Joseph N. Zalameda, and Elizabeth D. Gregory, "Application of the quadrupole method for simulation of passive thermography," Proc. SPIE 10214, Thermosense: Thermal Infrared Applications XXXIX, 102140Y (Presented at SPIE Commercial + Scientific Sensing and Imaging: April 12, 2017; Published: 5 May 2017); https://doi.org/10.1117/12.2264946.
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