摘要
某型航空发动机风扇叶片在外场使用时发生断裂故障,断口分析后判断为疲劳断裂,裂纹起始于叶盆侧阻尼台与叶身转接处,原因为电击伤。针对这一叶片阻尼台断裂故障,为了验证电击伤对叶片疲劳强度的影响,需要在振动环境下对正常叶片和烧伤叶片进行疲劳强度对比试验。介绍了试验方案、过程,并进行了试验数据分析。
A certain type of aviation engine fan blade had a fracture failure when it was used in the field,and it was judged to be fatigue fracture after fracture analysis.The fracture starts at the junction of the side damping table and the blade body due to electric shock.In view of the fracture failure of the blade damping table,in order to verify the impact of electric shock on the fatigue strength of the blade,it is necessary to conduct a fatigue strength comparison test on the normal blade and the burned blade under a vibration environment.The test plan and process were introduced,and the test data analysis was carried out.
作者
田齐
张振宇
李季
Tian Qi;Zhang Zhenyu;Li Ji
出处
《机械制造》
2021年第8期79-81,共3页
Machinery
关键词
叶片
阻尼台
断裂
试验
Blade
Damping Table
Fracture
Test
