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Improvement of the Fatigue Life of Stainless Steel Specimens by Laser Shock Processing

  • NEW TECHNOLOGIES IN MECHANICAL ENGINEERING
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Abstract

An investigation concerning the influence of laser shock processing (LSP) of stainless steel specimens made of 03Kh22N6M2 steel for the fatigue life by finite element modeling was performed. The known experimental fatigue life parameters were compared with the data taken from the finite element modeling. A conforming comparison is observed between the numerical and experimental data. It was shown that the thickness of the specimen is an important parameter during application of the LSP technology. It was found that with the decrease in the specimen thickness the fatigue life, conditioned by the LSP application, improves significantly. It was shown that for thin specimens (about 2 mm) the application of the LSP technology improves the fatigue life to 300%.

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ACKNOWLEDGMENTS

The authors are grateful to N.A. Vlasov for assistance in calculations in the finite element packages ABAQUS and FE-SAFE.

Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the designated program “Investigations and Development by the Priority Development Fields of the Scientific and Technological Complex of Russia for 2014–2020,” grant no 14.607.21.0191 dated Sept. 26, 2017, project RFMEFI60717X0191.

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Authors and Affiliations

  1. Blagonravov Mechanical Engineering Research Institute of the Russian Academy of Sciences (IMASH RAN), 101990, Moscow, Russia

    G. Zh. Sakhvadze

  2. Bauman Moscow State Technical University, 105005, Moscow, Russia

    R. Z. Kavtaradze

  3. Lomonosov Moscow State University, 119991, Moscow, Russia

    M. U. Nikabadze

  4. Tsereteli State University, 4600, Kutaisi, Georgia

    O. G. Kikvidze

Authors
  1. G. Zh. Sakhvadze
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  2. R. Z. Kavtaradze
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  3. M. U. Nikabadze
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  4. O. G. Kikvidze
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Corresponding author

Correspondence to G. Zh. Sakhvadze.

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Translated by E. Grishina

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Sakhvadze, G.Z., Kavtaradze, R.Z., Nikabadze, M.U. et al. Improvement of the Fatigue Life of Stainless Steel Specimens by Laser Shock Processing. J. Mach. Manuf. Reliab. 48, 353–360 (2019). https://doi.org/10.3103/S1052618819040137

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  • DOI: https://doi.org/10.3103/S1052618819040137

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