Abstract:
A study is made of the possibility for evaluation of damage accumulation during fatigue loading by measuring the ultrasound velocity. It is shown that the dependence of the ultrasonic velocity on the number of loading cycles is represented by a three-stage curve and that the ultrasonic velocity decreases at each stage. The most rapid decrease occurs during the final stage of the test, immediately before fracture. It is also shown that the transition to the critical state can be observed on the basis of ultrasonic-velocity measurements. A method of increasing the service life of a specimen that has neared the critical state is proposed. The method involves exposure of the specimen to a series of high-energy pulses of electric current. The treatment increases the service life by 30–40% compared to the initial value.
Citation:
L. B. Zuev, O. V. Sosnin, D. Z. Chirakadze, V. E. Gromov, V. V. Murav'ev, “Acoustic evaluation of the endurance of steel specimens and recovery of their serviceability”, Prikl. Mekh. Tekh. Fiz., 39:4 (1998), 180–183; J. Appl. Mech. Tech. Phys., 39:4 (1998), 639–641
\Bibitem{ZueSosChi98}
\by L.~B.~Zuev, O.~V.~Sosnin, D.~Z.~Chirakadze, V.~E.~Gromov, V.~V.~Murav'ev
\paper Acoustic evaluation of the endurance of steel specimens and recovery of their serviceability
\jour Prikl. Mekh. Tekh. Fiz.
\yr 1998
\vol 39
\issue 4
\pages 180--183
\mathnet{http://mi.mathnet.ru/pmtf3306}
\elib{https://elibrary.ru/item.asp?id=22403953}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 1998
\vol 39
\issue 4
\pages 639--641
\crossref{https://doi.org/10.1007/BF02471262}
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https://www.mathnet.ru/eng/pmtf3306
https://www.mathnet.ru/eng/pmtf/v39/i4/p180
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Andrey Schipachev, Mohammed Aljadly, Oksana Ganzulenko, Dmitrii Chernikov, Vasilii Razzhivin, Rinat Yusupov, “Evaluating the Effectiveness of Magnetic-Pulse Treatment for Healing Continuity Defects in the Metal of Oil and Gas Pipelines”, Metals, 13:11 (2023), 1875
K V Kukudzhanov, A L Levitin, “Modelling of some mechanism of metal electroplasticity under pulsed high-energy electromagnetic field action”, J. Phys.: Conf. Ser., 1205 (2019), 012032
K V Kukudzhanov, A L Levitin, “Healing of damaged metal by a pulsed high-energy electromagnetic field”, J. Phys.: Conf. Ser., 991 (2018), 012049
Konstantin V. Kukudzhanov, Alexander L. Levitin, “Phase Transformations in Metals Stimulated by a Pulsed High-Energy Electromagnetic Field”, Procedia IUTAM, 23 (2017), 84
A. N. Smirnov, N. V. Ababkov, V. V. Murav'ev, S. V. Fol'mer, “Criteria for the evaluation of the technical state of the long-lived metal of HPP equipment based on acoustic structuroscopy”, Russ J Nondestruct Test, 51:2 (2015), 94
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