Experiment and Smith, Watson and Topper model parameter to correlate fatigue life of rail steel

Abstract

This paper examines the correlation of fatigue life of R260 steel with using experiment and Smith,Watson and Topper model parameter. In order to correlation the fatigue life, three specimens have been used in testing for tensile strength in gaining properties of mechanical and eighteen specimens used for fatigue testing with using Servo-Pulser fatigue machine less 100 kN. In the meantime, the strain gauges were attaching to all specimens to measure the strain amplitude with one to one specimen during in run fatigue testing. All specimens were prepared in accordance standard E466-15 dimension and setting with R=-1 as fully reversed at room temperature with using constant loading amplitude and frequency of 10Hz. The main findings show that both experiment and SWT model parameter the best fit and a good agreement for correlation fatigue life.