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.

引用

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页码：133 / 141

页数：9

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