Failure analysis of stress corrosion cracking in aircraft bolts

被引：18

作者：

Lee, Hong-Chul

Choi, Jae-man

Lee, Bokwon

Kim, Tae-Gu ^{[1
]}

机构：

[1] Inje Univ, Coll Biomed Sci & Engn, Dept Occupat Safety & Hlth, Gimhae 621749, Gyeongnam, South Korea

[2] RoKAF, Engine Div, ATRI, Donggu 701799, Daegu, South Korea

来源：

ENGINEERING FAILURE ANALYSIS | 2007年 / 14卷 / 01期

关键词：

clamp bolt; stress corrosion cracking; residual stress;

D O I：

10.1016/j.engfailanal.2005.10.021

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This research was conducted on the failure analysis of the failed clamp bolt from a helicopter engine in the RoKAF. Through the fractography, metallography, and stress analysis of the failed part, it was found that the clamp bolt was fractured by stress corrosion cracking due to the interaction of tensile residual stress and corrosive environment. The stress corrosion crack is a phenomenon that occurs in susceptible alloys and is caused by the conjoint action of a surface tensile stress and the presence of a specific corrosive environment. Therefore, it is recommended that the material of the clamp bolt should be changed to prevent similar failures. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：209 / 217

页数：9