Residual stress distributions and their influence on fatigue lifetimes
Residual stress distributions and their influence on fatigue lifetimes
复制标题
DOI：
10.1016/s0142-1123(01)00133-5
复制
发表时间：
2001-01-01
影响因子：
6
通讯作者：
Ezeilo, AN
中科院分区：
文献类型：
--
作者：
Webster, GA;Ezeilo, AN
残余应力会对结构工程部件的疲劳寿命产生重大影响。为了准确评估疲劳寿命，需要对残余应力分布有详细的了解。介绍了中子衍射无损测量这些应力的方法。介绍了焊接引起的有害残余应力分布和自增强、冷扩孔和喷丸等工艺产生的有益应力的实例。它表明，提供了一个准确的知识所产生的残余应力分布是可用的，津贴是为应力重新分布和多轴性质的残余应力，疲劳性能的可靠预测可以。(C)2001爱思唯尔科技有限公司版权所有。
Residual stresses can have a significant influence on the fatigue lives of structural engineering components. For the accurate assessment of fatigue lifetimes a detailed knowledge of the residual stress profile is required. The neutron diffraction non-destructive method of measuring these stresses is described. Examples of the detrimental residual stress distributions introduced by welding and of the beneficial stresses produced by such processes as autofrettage, cold hole expansion and shot peening are presented. It is demonstrated that, provided an accurate knowledge of the residual stress profiles generated is available and allowance is made for stress redistribution and the multiaxial nature of residual stresses, reliable predictions of fatigue performance can be made. (C) 2001 Elsevier Science Ltd. All rights reserved.