Abstract
The nondestructive evaluation of metallic materials is based on the properties of the tested sample which can be obtained by various techniques, eg: X-ray absorption1, elastic wave reflection2, thermal property modifications3. Thermoelastic testing detects the alteration of the thermal and elastic constants inside metallic samples. Among different methods to generate and detect dynamic strain in solids4–7, we have selected a system based on an intensity modulated laser beam to excite thermal waves and a high resolution heterodyne laser probe to detect the thermoelastic displacements.
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Cretin, B., Hauden, D., Mahmoud, A., Lesne, JL. (1991). Nondestructive Evaluation of Solids by Thermoelastic Testing With Laser Beams. In: Ruud, C.O., Bussière, J.F., Green, R.E. (eds) Nondestructive Characterization of Materials IV. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0670-0_35
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DOI: https://doi.org/10.1007/978-1-4899-0670-0_35
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