| 吕凤军,傅国如.某型发动机滑油供油导管裂纹分析[J].装备环境工程,2013,10(6):114-117. LYU Feng-jun,FU Guo-ru.Crack Analysis of Aero-engine Oil-providing Pipe[J].Equipment Environmental Engineering,2013,10(6):114-117. |
| 某型发动机滑油供油导管裂纹分析 |
| Crack Analysis of Aero-engine Oil-providing Pipe |
| 投稿时间：2013-03-21 修订日期：2013-04-15 |
| DOI：10.7643/issn.1672-9242.2013.06.024 |
| 中文关键词: 导管 裂纹 疲劳 |
| 英文关键词:pipe crack fatigue |
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| 中文摘要: |
| 目的 研究确定某发动机滑油供油导管裂纹性质及其产生原因。方法 通过痕迹检查、断口观察、X射线能谱分析等试验方法 ，对滑油供油导管裂纹进行了综合分析。结果滑油供油导管的裂纹性质为疲劳裂纹，疲劳起始于波纹管第1波谷的外表面。结论 波纹管存在装配张应力是导致滑油供油导管产生疲劳裂纹的原因；装配张应力是由于弯管焊接段与波纹管在焊接时不同轴造成的。 |
| 英文摘要: |
| Objective To investigate the failure mode and reason for oil-providing pipe crack.Methods Comprehensive analysis of aero-engine oil-providing pipe was carried out through trace observation, macro and micro characteristics in combination with X-ray energy analysis.ResultsThe failure of the pipe was due to fatigue crack, and the fatigue crack started from the first trough surface of the ripple pipe. Conclusion sThe assembling stress was the main reason for this crack failure, and it was formed owing to the different axis between the bended pipe and the ripple pipe during the welding process. |
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