EFFECT OF STRESS CONCENTRATION ON FATIGUE STRENGTH OF TYPE 20 STEEL

Authors

  • С. М. Шукаєв National Technical University of Ukraine "Kyiv Polytechnic Institute", Kyiv, Ukraine
  • М. М. Гладский National Technical University of Ukraine "Kyiv Polytechnic Institute", Kyiv,
  • С. М. Шубін National Technical University of Ukraine "Kyiv Polytechnic Institute", Kyiv,

DOI:

https://doi.org/10.20535/2305-9001.2012.65.38237

Keywords:

fatigue strength, notch effect, S–N approach, type 20 steel, tubular specimens

Abstract

The effect of stress concentration on fatigue strength of type 20 steel was investigated. The fatigue tests were carried out on thin-walled tubular smooth specimens and specimens containing a circular hole. The fatigue strength of specimens with stress concentrators was lower than that of smooth specimens. The effect of stress concentration on fatigue life ofspecimens was the largest on test base of 106 cycles. With the increase in the amplitude of stress this effect decreased and reduced to naught in the range of quasi-static fracture. The S-N approach as well as Neuber’s rule and Glinka’s rule were used in this study for fatigue life prediction for notched specimens in the range of low cycle fatigue. The Neuber’s rule and S-N approach was found to correlate data well

Author Biographies

С. М. Шукаєв, National Technical University of Ukraine "Kyiv Polytechnic Institute", Kyiv

д.т.н., проф.

М. М. Гладский, National Technical University of Ukraine "Kyiv Polytechnic Institute", Kyiv

к.т.н.

References

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Published

2015-03-03

Issue

No. 65 (2012)

Section

Статті

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The authors reserve the right to authorship of the work and pass the journal right of first publication of this work is licensed under a Creative Commons Attribution License, which allows others to freely distribute the work published with reference to the authors of the original work and the first publication of this magazine.