Abstract
The general principle of the control by thermography consists in submitting an object to an external excitation, forcing it to react, and then observing the thermal reaction by an infrared camera. A large variety of systems can be used as an excitation: vibrations, micro-waves, magnetic induction, air, water, and light. The results we present here exclusively concern this last point; thus, the technique is called Photothermal Thermography (Photo = luminous excitation and thermal = induced effect). Others also call it Video Pulse Thermography. When used in non destructive testing, the technique permits the detection of subsurface singularities. We present, hereafter, some visualization techniques and programs which help NDT operators to give a better diagnosis: faster, more reliable, and more precise.
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Bibliography
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David Crowther. Ph D Thesis. University of Reims. March 1990.
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© 1994 Springer Science+Business Media Dordrecht
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Danjoux, R., Collet, D., Beaudoin, J.L. (1994). New Developments In The Detection Of Defects By Photothermal Thermography. In: Maldague, X.P.V. (eds) Advances in Signal Processing for Nondestructive Evaluation of Materials. NATO ASI Series, vol 262. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1056-3_12
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DOI: https://doi.org/10.1007/978-94-011-1056-3_12
Publisher Name: Springer, Dordrecht
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