2017 №04 (03) DOI of Article
2017 №04 (05)

Technical Diagnostics and Non-Destructive Testing 2017 #04
Technical Diagnostics and Non-Destructive Testing, №4, 2017 pp. 25-31

Detection of acoustic-emission effects during reloading of St3sp steel specimens

V. L. Alekseenko1, A.A. Sharko2, S.A. Smetankin1, D.M. Stepanchikov2, K.Yu. Yurenin1

1 Kherson State Marine Academy, 20 Ushakov ave., Kherson, 73000, E-mail:ksma@ksma.ks.ua
2 Kherson National Technical University, 24 Berislavskoe shosse str., Kherson, 73008. E-mail:kntu@kntu.net.ua

Presence of three zones with successively reducing intensity of acoustic emission at repeated single-axis loading was determined, which correspond to the strain hardening zones of St3sp (killed) steel. An effect of decrease of acoustic emission signal density at loading rise was found. An explanation of this effect is given following from the presentation of energy of signals being emitted. 9 Ref., 3 Tabl., 7 Fi
Keywords: acoustic emission, effects, steel, loading, signals, information, dislocations

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