APPLICATION AUTOCORRELATION FUNCTION FOR THE EVALUATION OF THE FATIGUE STRENGTH OF DETAILS AFTER MACHINING
Ostapchuk A.K. 1, Kuznetsova E.M. 2, Mikhalischev A.G. 2, Vagina A.I. 2

1. KIGT USURT
2. USURT

Abstract:

In this paper, the effect of surface roughness on the fatigue strength of a part is investigated. The conducted experiments show that the limit of endurance σ-1 with stress concentrators depends on the method and regimes of finish surface treatment of parts. The difference in the values of the endurance limit of the parts treated with turning with different technological modes is 7.8%, with a smoothing this difference is 8.2%.

Keywords: Profilogram, autocorrelation function, fatigue strength