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Processing of active thermal nondestructive testing results by the method of wavelet analysis

  • Thermal Methods
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Abstract

Wavelet transforms can be used for active thermal nondestructive testing for the identification of flaws that are located at different depths and produce Gaussian-like signals characterized by a time shift on a heated surface. The results of the application of scalar and complex wavelet analysis for increasing the signal/noise ratio in the active thermal inspection of flaws in composite materials and thermal-barrier coatings, as well as also for revealing the corrosion in metals, are described. Parent Morlét, Paul, and Mexican-hat wavelets were used.

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Authors and Affiliations

  1. Institute of Introscopy, Tomsk Polytechnic University, ul. Savinykh 7, Tomsk, 634028, Russia

    V. P. Vavilov, V. V. Shiryaev & V. S. Khorev

Authors
  1. V. P. Vavilov
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  2. V. V. Shiryaev
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  3. V. S. Khorev
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Correspondence to V. P. Vavilov.

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Original Russian Text © V.P. Vavilov, V.V. Shiryaev, V.S. Khorev, 2011, published in Defektoskopiya, 2011, Vol. 47, No. 4, pp. 70–79.

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Vavilov, V.P., Shiryaev, V.V. & Khorev, V.S. Processing of active thermal nondestructive testing results by the method of wavelet analysis. Russ J Nondestruct Test 47, 276–283 (2011). https://doi.org/10.1134/S1061830911040103

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  • DOI: https://doi.org/10.1134/S1061830911040103

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