Fatigue Life Prediction of 7075 Notched Specimens by Master S-N Curve based Structural Stress Method

被引：2
|
作者：
Kwak, Si Young [1 ]
Hwang, Seong Chul [2 ]
Hong, Jeong Kyun [3 ]
机构：
[1] UST, Korea Inst Ind Technol, Robot & Virtual Engn Dept, Cyber Mfg Proc Grp, Daejeon, South Korea
[2] Tyco Elect AMP Korea Co Ltd, R&D Ctr, Gyongsan, South Korea
[3] Battelle Mem Inst, Ctr Welded Struct Res, Columbus, OH USA
来源：
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A | 2018年 / 42卷 / 02期
关键词：
Structural Stress; Master Curve; Fatigue Design; Notched Specimen;
D O I：
10.3795/KSME-A.2018.42.2.133
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper proposes the possibility of fatigue life estimation using the master S-N curve of a general notched structure with arbitrary stress concentration factor. Firstly, the structure stress was computed from the fatigue data that had been generated by Battelle Institute for Al 7075-T6 notched specimens (Kt=1.5, 2, 4, 5), and a master S-N curve based on the structural stress was drawn up. Secondly, a novel fatigue test was conducted for a notched specimen (Kt=3) and the result of this test was compared to the predictive value derived from the master S-N curve. From these processes, it was possible to validate the accuracy and usefulness of fatigue life estimation using master S-N curve.
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页码：133 / 141
页数：9
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