Abstract
It is shown that when large products with a complex structure with a high integral attenuation of ultrasound are tested, it is expedient to use different electronic signal-processing methods (storage, normalization, and synchronous detection) that allow one to increase the thickness-measurement accuracy of vermicular cast iron products with complex structures and poor surfaces; when large polymer composite products with a high integral attenuation of ultrasonic signals are tested these methods allow one to not only increase the signal-to-noise ratio but the measurement accuracy of the bottom signal. It is possible to fully apply different electronic signal-processing methods if a multifunctional software–hardware measuring system that we designed is used, which is capable of selecting the optimum set of signal-processing methods for each new product.
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Original Russian Text © V.K. Kachanov, I.V. Sokolov, M.B. Fedorov, P.V. Kontsov, M.A. Karavaev, 2015, published in Defektoskopiya, 2015, Vol. 51, No. 6, pp. 32–40.
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Kachanov, V.K., Sokolov, I.V., Fedorov, M.B. et al. The application of electronic signal-processing methods in ultrasonic thickness gauging of products with a complex structure. Russ J Nondestruct Test 51, 352–359 (2015). https://doi.org/10.1134/S1061830915060030
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DOI: https://doi.org/10.1134/S1061830915060030