The deformation and stress state due to overrolling near the rough surface of a rail is studied. Then a criterion for the inclination of a shear localization zone (SLZ) is introduced. Furthermore, the recent finding that the crack tip driving forces becomes infinite for a crack embedded in a SLZ is recalled. Experimental observation shows also that the fracture toughness in the SLZ is significantly reduced. All these facts point to the development of a crack, the so-called head check if it arises in a regular pattern, in the SLZ, whose predicted direction agrees well with observations.
A possible origin of surface cracks in rails
2011-11-01
7 pages
Article (Journal)
Electronic Resource
Unknown
A possible origin of surface cracks in rails
Online Contents | 2011
|A possible origin of surface cracks in rails
British Library Online Contents | 2011
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|Internal transverse cracks and fissures, in rails
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|