材料工程Issue(4)：63-65,83,4.
缓冲器轴套夹布胶木失效分析
Failure Analysis on Fabroil of Buffer Axile Bush
范金娟 1李莹 1姜涛 1陶春虎1
作者信息
- 1. 北京航空材料研究院失效分析中心,北京100095
- 折叠
摘要
Abstract
The buffer axile bush of an undercarriage cracked and fractured during service. The failure cause of the fabroil of the buffer axile bush was investigated by appearance inspection, fracture surface observation, properties testing and analyzing the built-up structure and force of the fabroil. The results show that the cracks of the fabroil are fatigue cracks and the fracture of the fabroil is a result of fatigue cracking. The main cause of fatigue cracks is that there is a gap caused by transition fit between the fabroil and the copper bush. After the oil enters into the gap, the tensile stress on the fabroil is far higher than the designed oil pressure and linearly relates to the oil pressure. The oil pressure exceeds the resistance of the fabroil and the fabroil cracks.关键词
缓冲器/轴套/夹布胶木/断裂/裂纹Key words
buffer/ axile bush/ fabroil/ fracture/ crack分类
航空航天引用本文复制引用
范金娟,李莹,姜涛,陶春虎..缓冲器轴套夹布胶木失效分析[J].材料工程,2011,(4):63-65,83,4.
