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

V. P. BAGMUTOV; A. A. BELOV; V. I. VODOPYANOV; O. V. KONDRATYEV

doi:10.5755/j01.mech.24.5.14474

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