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Estimation of local thermophysical properties by means of front-face photothermal infrared thermography: application to mechanical stress analysis
Hervé Pron, Jean-François Henry, Stephan Offermann, Christian Bissieux, Jean-Louis Beaudoin

Mechanical stresses, applied or residual, are identified by means of photothermal infrared thermography. Stresses are detected via their influence on thermophysical properties and more particularly on the thermal conductivity tensor. Because this influence remains weak, a sufficiently accurate identification procedure is needed as well as a significant enhancement of the signal-to-noise ratio, by means of a focal plane array camera.

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