Failure analysis of MVR (machinery vapor recompressor) impeller blade

被引：18

作者：

Kim, TG ^{[1
]}

Lee, HC

机构：

[1] INJE Univ, Dept Safety Engn, Gimhae 621749, Gyeongnam, South Korea

[2] ROKAF, Div Engn, ATRI, Deagu 701799, South Korea

来源：

ENGINEERING FAILURE ANALYSIS | 2003年 / 10卷 / 03期

关键词：

impeller failures; fatigue; casting defects; vaibration; non-destructive testing;

D O I：

10.1016/S1350-6307(02)00077-8

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This dissertation studies an accident resulting from the breakdown of an MVR impeller blade. Visual, stereoscopic and, SEM examinations have been carried out to find out the causes of the MVR blade defects. The results show that failure of the MVR blade was due to material casting defects. An initial crack started from casting defects where stress intensified and then, a fatigue crack progressed to the critical length of this crack. In addition to these defects, overstressing caused by overspeed accelerated the catastrophic failure of the blade. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：307 / 315

页数：9