| 某型飞机外翼下壁板连接件疲劳试验失效分析 |
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| 引用本文： | 刘仁宇,何字廷,舒文军,崔荣红.某型飞机外翼下壁板连接件疲劳试验失效分析[J].航空精密制造技术,2008,44(6). |
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| 作者姓名： | 刘仁宇 何字廷 舒文军 崔荣红 |
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| 作者单位： | 空军工程大学,工程学院,西安,710038 |
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| 基金项目： | 国防预研项目
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| 摘 要： | 通过对某型飞机外翼下壁板与肋典型连接厚件疲劳试验的破坏件进行断口金相分析和试验特征分析发现,在多种应力综合作用下,处于三向应力状态下的螺栓孔内壁形成疲劳源,最终发生疲劳断裂,且在出现裂纹之后,裂纹扩展寿命很短.
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| 关 键 词： | 连接件 螺栓 断口 疲劳断裂 金相分析 |
Failure Analysis for Lap Joint Panel of an Outer Wing in Fatigue Test |
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| LIU Ren-yu,HE Yu-ting,SHU Wen-jun,et al.Failure Analysis for Lap Joint Panel of an Outer Wing in Fatigue Test[J].Aviation Precision Manufacturing Technology,2008,44(6). |
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| Authors: | LIU Ren-yu HE Yu-ting SHU Wen-jun |
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| Institution: | LIU Ren-yu,HE Yu-ting,SHU Wen-jun,et al (Engineering College,Air Force Engineering University,Xi\'an 710038) |
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| Abstract: | Fractography was observed and test characters were analyzed by test of lap joint panel of an outer wing. It is confirmed that bolt holes generate fatigue regions caused by kinds of tension forces, and accordingly specimens have fatigue failure. It is founded that the crack extension life is very short. |
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| Keywords: | lap joint bolt fractography fatigue fracture failure analysis |
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