About the regularities of fatigue fracture and fatigue strength due to the influence of asymmetry of the tension cycle

Authors

  • V. P. BAGMUTOV
  • A. A. BELOV Volgograd state technical univercity
  • V. I. VODOPYANOV
  • O. V. KONDRATYEV

DOI:

https://doi.org/10.5755/j01.mech.24.5.14474

Keywords:

fatigue fracture, the asymmetry cycle ratio, 45 steel, titanium alloy PT-3V, the curve of fatigue

Abstract

The fatigue curves are obtained and the regulari-ties of the effect of the tensile cycle asymmetry in the range –2 ≤ R ≤ 0.5 on the length and position of the transi-tion section of the fatigue curve of steel 45 and titanium alloy PT-3V are investigated. Diagrams of limit amplitudes for the studied alloys are constructed. A method for calcu-lating the position and length of the transition stage of the fatigue curve is proposed.

DOI: http://dx.doi.org/10.5755/j01.mech.24.5.14474

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Published

2018-11-08

Issue

Vol. 24 No. 5 (2018)

Section

MECHANICS OF SOLID BODIES