The competitive role of wear and RCF in a rail steel
The competitive role of wear and RCF in a rail steel
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DOI：
10.1016/j.engfracmech.2004.04.011
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发表时间：
2005-01-01
影响因子：
5.4
通讯作者：
Roberti, R
中科院分区：
文献类型：
--
作者：
Donzella, G;Faccoli, M;Roberti, R
本文提出了一个钢轨磨损和滚动接触疲劳（RCF）的评价模型，着重强调了它们之间的竞争作用。研究了不同工况下裂纹形核和扩展的不同机制，提出了预测哪种损伤机制占主导地位的失效指数。提出了一种将其与裂纹扩展速率相比较的方法，以预测磨损是否能消除由于RCF引起的表面裂纹，并通过试验验证了该方法的有效性。(C)2004爱思唯尔有限公司保留所有权利。
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. (C) 2004 Elsevier Ltd. All rights reserved.