Nondestructive Evaluation of Solids by Thermoelastic Testing With Laser Beams

  • B. Cretin
  • D. Hauden
  • A. Mahmoud
  • J.-L. Lesne


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.


Nondestructive Evaluation Thermal Wave Residual Static Stress Thermoelastic Displacement Nondestructive Characterization 
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Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • B. Cretin
    • 1
    • 2
  • D. Hauden
    • 1
    • 2
  • A. Mahmoud
    • 1
    • 2
  • J.-L. Lesne
    • 3
  1. 1.Laboratoire de Physique et Métrologie des OscillateursCNRSFrance
  2. 2.l’Université de Franche-Comté-BesançonBesançonFrance
  3. 3.Electricité de FranceDirection des Etudes et RecherchesSaint-DenisFrance

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