Prediction of multiaxial fatigue life for notched specimens of titanium alloy TC4

被引：12
|
作者：
Wu, Z. R. [1 ,2 ]
Hu, X. T. [2 ]
Li, Z. X. [1 ]
Song, Y. D. [2 ]
机构：
[1] Southeast Univ, Jiangsu Key Lab Engn Mech, Dept Engn Mech, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing, Jiangsu, Peoples R China
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2016年 / 30卷 / 05期
基金：
中国博士后科学基金;
关键词：
Multiaxial fatigue; Critical plane approach; Notched specimen; Life prediction; Critical distance; STRESSES; STRAINS; MODELS; DAMAGE;
D O I：
10.1007/s12206-016-0405-1
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Both the proportional and nonproportional multiaxial fatigue tests were conducted on two kinds of notched specimens of titanium alloy TC4. The multiaxial fatigue critical area of notched specimen is considered as the location experiencing the maximum damage. It is unsatisfactory to predict the multiaxial fatigue life with the local stress and strain in the fatigue critical area. The critical distance concepts are employed in the multiaxial life prediction method for notched specimens. The proposed method was checked by the test data of TC4 notched specimens. The prediction results are almost within a factor of three scatter band of the test results.
引用
收藏
页码：1997 / 2004
页数：8
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