Rail wheel contact at switches and crossings(S&Cs) induces impact stresses along with normal and shear contact stresses, resulting in plastic deformation and eventually crack formation. A damaged and deformed wing rail of a manganese steel crossing is characterized. This includes a study of the microstructure, hardness and 3D crack network. The surface of the rail receives the maximum deformation resulting in a hardened top layer. The deformation is manifested in a high density of twins in the microstructure. A complex crack network is revealed in high resolution by X-ray tomography.
|Title of host publication||11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018|
|Publication status||Published - 2018|
|Event||11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems - Lijm & Cultuur, Delft, Netherlands|
Duration: 24 Sep 2018 → 27 Sep 2018
Conference number: 11
|Conference||11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems|
|Location||Lijm & Cultuur|
|Period||24/09/2018 → 27/09/2018|
- Switches and crossings (S&Cs)
- 3D X-Ray tomography
- 2D & 3D crack network
- Rolling contact fatigue (RCF)
- Railway grade steels
Dhar, S., Danielsen, H. K., Fæster, S., Rasmussen, C. J., & Juul Jensen, D. (2018). 2D and 3D characterization of rolling contact fatigue cracks in a manganese steel crossing wing rail. In 11th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2018 (pp. 196-202 ). TU Delft.