Rolling contact fatigue (RCF) cracks form on the surface of the rails due to compressive and frictional stresses induced on the rail at the wheel/rail contact patch. After a stage of low-angled growth, the cracks may propagate a) upwards, causing spalling of the rail material, b) downwards, causing complete local failure of the rail, c) along the initial low-angled plane of growth. The project aims in the development of criteria for capturing the direction and rate of crack propagation in a general non-linear growth setting. The developed criteria along with already existing criteria from the literature are evaluated against known crack paths and rates from mixed-mode crack growth experiments. Criteria that perform best will be used in the development of a numerical tool for simulation of RCF crack evolution.
Doktorand vid Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Biträdande professor vid Chalmers, Mechanics and Maritime Sciences, Dynamics
Professor vid Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Funding Chalmers participation during 2014–2015
Funding Chalmers participation during 2014–2019
Areas of Advance