Varfolomeev, I.I.VarfolomeevLuke, M.M.LukeBurdack, M.M.Burdack2022-03-112022-03-112009https://publica.fraunhofer.de/handle/publica/366010This paper presents an experimental and numerical study on fretting fatigue behaviour of an A4T steel (25CrMo4) widely employed in the manufacturing of railway axles. First, standard S-N curves describing the material fatigue properties within both LCF and HCF regimes were experimentally derived. Subsequent fretting fatigue tests were carried out using loading parameters determined via numerical analyses. A comparison of both results series in terms of the SWT fatigue parameter applicable to multi-axial loading conditions suggests a high potential of the combined experimental and numerical approach for predicting crack initiation at fretting fatigue. Further issues - scatter in basic fatigue data, size effect, material and friction modelling - and their significance for the lifetime prediction are briefly addressed.enA4T steelrailway axlesnumerical analysis620conference paper