| 某型发动机加力点火喷嘴管断裂分析 |
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| 引用本文： | 吕凤军,傅国如,陈荣. 某型发动机加力点火喷嘴管断裂分析[J]. 理化检验(物理分册), 2009, 45(1): 31-33 |
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| 作者姓名： | 吕凤军 傅国如 陈荣 |
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| 作者单位： | 北京航空工程技术研究中心,北京,100076 |
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| 摘 要： | 采用断口分析、X射线能谱分析、痕迹分析及金相检验等试验方法对断裂的发动机加力点火喷嘴管进行了综合分析。结果表明：装配应力大导致喷嘴管产生疲劳裂纹，疲劳裂纹起始于喷嘴管与加力内圈总管管座连接处的焊接根部，喷嘴管断裂性质为起始应力较大的高周疲劳断裂；在发动机大修重新装配喷嘴管时存在漏检问题。
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| 关 键 词： | 喷嘴管 疲劳 装配应力 |
Fracture Analysis of Igniter Nozzle Tube of Aeroengine Afterburner |
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| LV Feng-jun,FU Guo-ru,CHEN Rong. Fracture Analysis of Igniter Nozzle Tube of Aeroengine Afterburner[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2009, 45(1): 31-33 |
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| Authors: | LV Feng-jun FU Guo-ru CHEN Rong |
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| Affiliation: | Beijing Aeronautical Technology Research Center;Beijing 100076;China |
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| Abstract: | In order to analyze the reason for fracture of afterburner igniter nozzle tube,the means,such as characters of fracture,X-ray energy analysis,trace analysis and microstructure examination,were conducted.The results showed that the afterburner igniter nozzle tube failed due to high cycle fatigue fracture with high original stress,and fatigue crack started from welding zone between afterburner igniter nozzle tube and afterburner fuel manifold.The main cause of fatigue origination was excessive assembly stress... |
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| Keywords: | nozzle tube fatigue assembly stress |
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