Parameterized characterization for rotating-bending fatigue strength of high-strength metal components

摘要：

　　Most of the fatigue failure of components in aero-structures occurs on its surface or in subsurface layer.In order to promote the fatigue strength of material or component,more and more attention is paid on surface treatment technology.For better evaluating the quality of the surface,optimizing the surface process technique and selecting the process parameters,a quantitative characterization method and a relating mathematical model are necessary.By studying the influence of the parameters of the surface modification layer on the fatigue properties of metal components,a parameterized characterization method for rotating-bending fatigue strength of high-strength metal component is proposed and a quantitative mathematical model is obtained.The validation of the model is verified in terms of rotating-bending fatigue testing for M50NiL samples.This model can be used not only to evaluate the fatigue strength of metal components but also to provide some reference on surface treatment.

关键词： fatigue surface modification layer parameterized characterization evaluating model

作者: J.F.Zhang X.D.Bian D.Mu

作者单位: Key Laboratory for Mechanics in Fluid and Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China

会议类型: 国际会议

会议名称: International Conference on Airworthiness & Fatigue -7th ICSAELS Series Conference(大飞机安全性能与疲劳国际会议)

会议地点: 北京

会议语种:英文

页码: 117-122

在线出版日期: 2013-03-24（万方平台首次上网日期，不代表论文的发表时间）