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Strength of Materials

, Volume 27, Issue 4, pp 179–184 | Cite as

Raising the fatigue strength of a construction by local laser heating

  • N. I. Obodan
  • A. G. Patsyuk
  • A. P. Lopatenko
  • A. M. Kulebyakin
Scientific and Technical Section
  • 12 Downloads

Abstract

A method is proposed for raising the fatigue strength of a construction by inducing residual stresses by local heating with a high-power pulsed laser. Fatigue failure can be slowed or eliminated, as can the formation of fatigue defects, if a pattern of compressive residual stresses is produced in the most readily damaged zones. Experiments have been done on how laser heating affects the fatigue strengths of planar specimens and fatigue crack growth. Finite-element calculations have been used to examine the effects of the heating parameters on the residual stresses.

Keywords

Fatigue Residual Stress Pulse Laser Fatigue Crack Fatigue Strength 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    A. S. Sakharov, V. N. Kislookii, V. V. Kiricheskii, et al., The Finite-Element Method in Solid-State Mechanics, General Editors A. S. Sakharov and I. Al'tenbakh [in Russian], Vishcha Shkola, Kiev (1982).Google Scholar
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    Physical Metallography, R. Cahn (ed.) [Russian translation], Issue 2, Mir, Moscow (1968).Google Scholar

Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • N. I. Obodan
    • 1
  • A. G. Patsyuk
    • 1
  • A. P. Lopatenko
    • 1
  • A. M. Kulebyakin
    • 1
  1. 1.Dnepropetrovsk State UniversityDnepropetrovskUkraine

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