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发动机防喘引接管断裂分析

Zhen ZHEN,Xing CHEN,Shuang ZHANG

Failure Analysis and Prevention（2018）

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Abstract
飞机发动机在空中飞行时发生喘振现象,地面检查发现发动机防喘引接管断裂,该现象发生数次.通过宏微观观察、能谱分析、金相检查及显微硬度检测,对引接管的断裂性质和原因进行分析.结果表明:引接管断裂性质为应力腐蚀开裂,随后在交变应力下发生疲劳扩展,最终导致断裂.综合分析引接管的断裂情况,从引接管材质、应力状态和使用环境等方面寻找原因,并提出相应的改进建议.
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