Correlations between parameters of acoustic-emission signals and corrosion damage in aluminum alloys |
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Authors: | V. A. Akop’yan Ye. V. Rozhkov S. N. Shevtsov |
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Affiliation: | (1) Institute of Mechanics and Applied Mathematics, Southern Federal University, pr. Stachki 200/1, Rostov-on-Don, 344090, Russia |
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Abstract: | Results of the studies of correlations between different parameters of acoustic-emission signals and the degree of corrosion damage of an aluminum alloy exposed to two different active media are presented. The critical values of the acoustic-emission count rate and the total acoustic-emission signal that correspond to the elastic-plastic transition and subsequent active creation of microcracks are obtained for Д16M. The limiting values of the known Ivanov-Bykov criterion, which characterizes the moment when corrosion cracking starts in Д16M, are calculated. The acoustic-emission technique may be used for nondestructive testing of corrosion damage on inner surfaces of piping in poorly accessible structures. |
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