Data di Pubblicazione:
2005
Abstract:
A model for assessing wear and rolling contact fatigue (RCF) in rails is proposed, with particular emphasis for their competitive role. RCF was studied taking into account different mechanisms of crack nucleation and propagation in different working
conditions, and failure indexes are proposed to predict which damage mechanism prevails. Wear was investigated in terms of wear rate under different working conditions; a method to compare it to crack propagation rate is proposed in order to predict if wear can remove surface cracks due to RCF.
The effectiveness of the method was verified by experimental tests.
conditions, and failure indexes are proposed to predict which damage mechanism prevails. Wear was investigated in terms of wear rate under different working conditions; a method to compare it to crack propagation rate is proposed in order to predict if wear can remove surface cracks due to RCF.
The effectiveness of the method was verified by experimental tests.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Rolling contact fatigue; Wear; Rails; Cracks; Elastic shakedown
Elenco autori:
Donzella, Giorgio; Faccoli, Michela; A., Ghidini; Mazzu', Angelo; Roberti, Roberto
Link alla scheda completa:
Pubblicato in: