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Photothermocapillary diagnostics of near-surface flaws in a solid under a varnish-and-paint coating

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Abstract

A new photothermal method of nondestructive testing is proposed and implemented for specimens having horizontal planes. It is shown that a near-surface flaw can be detected under a varnish-and-paint coating by the difference of the heat resistances in the flaw zone and its vicinity, which causes a change in the thermocapillary response of a silicon-oil layer coating the surface of the article. A decrease in the diameter of the scanning beam and an increase in its power cause an increase in the amplitude of the scanning curve and its slope near the flaw boundary.

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References

  1. Martin, Y. and Ash, E.A., Displacement Detection Technique for Thermal Wave Non-Destructive Testing, Traitment du Signal, 1985, vol. 2, pp. 465–471.

    Google Scholar 

  2. Shepard, S.M., Introduction to Active Thermography for Nondestructive Evaluation, Anticorr. Meth. Mater., 1997, vol. 44, no. 4, pp. 236–239.

    Article  Google Scholar 

  3. George, N.A., Photoacoustic and Photoelemental Deflection Studies on Certain Selected Photonic Materials, PH. D. Thesis. India. Cochin. Cochin University of Science and Technology, 2001.

  4. Bezuglyi, B.A., Capillary Convection Controlled by Thermal Effect of Light and its Application in Methods for Information Recording, Cand. Sci. Dissertation (Phys.-Math.), Moscow: Moscow State Univ., 1983.

    Google Scholar 

  5. Bezuglyi, B.A. and Chemodanov, S.I., Effect of Delay of a Thermocapillary Response from a Transparent Liquid Layer to Laser Heating of an Absorbing Substrate, Zh. Tekh. Fiz., 2005, vol. 75, no. 9, pp. 136–138.

    Google Scholar 

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Authors and Affiliations

  1. Tyumen State University, ul. Semakova 10, Tyumen, 625003, Russia

    B. A. Bezuglyi, A. Yu. Zykov & S. V. Semenov

Authors
  1. B. A. Bezuglyi
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  2. A. Yu. Zykov
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  3. S. V. Semenov
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Correspondence to B. A. Bezuglyi.

Additional information

Original Russian Text © B.A. Bezuglyi, A.Yu. Zykov, S.V. Semenov, 2008, published in Defektoskopiya, 2008, Vol. 44, No. 6, pp. 26–30.

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Bezuglyi, B.A., Zykov, A.Y. & Semenov, S.V. Photothermocapillary diagnostics of near-surface flaws in a solid under a varnish-and-paint coating. Russ J Nondestruct Test 44, 391–394 (2008). https://doi.org/10.1134/S1061830908060041

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  • DOI: https://doi.org/10.1134/S1061830908060041

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