受油探头橡胶密封圈失效分析

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受油探头橡胶密封圈失效分析
  
【英文篇名】 Failure Analysis of Rubber Seal Ring in Probe of Oil Receptacle
【作者中文名】 周波; 侯学勤;
【作者英文名】 ZHOU Bo1; HOU Xue-qin2（1.Hainan University Sanya College; Hainan Sanya 100095; China; 2.AVIC Failure Analysis Center; Beijing Institute of Aeronautical Materials; Beijing 100095; China）;
4 p- Z0 B. E# |5 v( R+ O【作者单位】 海南大学三亚学院; 北京航空材料研究院中国航空工业集团公司失效分析中心;
【文献出处】 失效分析与预防, Failure Analysis and Prevention, 编辑部邮箱 2011年 01期  
- ^) C" I. v" b; w' s, r" h' O, `# x期刊荣誉：ASPT来源刊  CJFD收录刊
【关键词】 橡胶密封圈; 磨损; 疲劳; 失效;
% j. Y8 |1 h* R- j5 U4 i* T【英文关键词】 rubber seal ring; wear; fatigue; failure;
9 F+ A* r5 r: l【摘要】 受油探头橡胶密封圈试飞考核后破损严重,导致漏油。通过对密封圈的外观进行检查,对密封圈的表面及断口进行宏、微观观察,对压制密封圈的模具表面进行了检查,对密封圈所用材料进行红外分析。结果表明:密封圈为疲劳失效;疲劳裂纹起源于密封圈表面磨损区域;密封圈表面磨损主要由于其在液压油中发生溶胀,体积增加且表面的加工质量粗糙,使得密封圈所受摩擦力增加,易发生磨损所致。
" C  c  f$ \- t6 P【英文摘要】 A rubber seal ring in the probe of oil receptacle failed as a result of serious wear after a trial flight of the aircraft.The cause of the failure was analyzed by macro-examination of the seal ring,macro and micro observation of the seal ring surface and fractures,surface inspection of the mould used for the seal ring production,and FTIR analysis of the material of the seal rings.The results show that the failure mechanism of the rubber seal ring is fatigue.The fatigue crack originated from the surface owin...