摘要
某型航空发动机外场使用过程中连续出现多台压气机第5级转子叶片掉块故障,通过对叶片复查、外场使用情况调查、理化分析、以往故障情况研究等手段,确定故障原因为振动疲劳断裂,在此基础上,对厂内制造改进过程及外场使用控制措施等提出了建议。
Several compressor rotor blades of 5 stage cracked in a service aero‐engine .The fracture mode of cracked blade is confirmed through on‐site observation ,blade examination ,use survey ,physical and chem‐ical analysis ,and research on past failures .It comes to a conclusion that the primary reason for the frac‐ture is vibratory fatigue .Based on this ,suggestions are made to reduce such failure .
出处
《西安航空学院学报》
2015年第5期20-23,共4页
Journal of Xi’an Aeronautical Institute
关键词
叶片掉块
故障分析
疲劳裂纹
fracture of blade
fatigue fracture
failure analysis
