| 机体结构AE信号的统计分析研究 |
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| 引用本文： | 张凤林,韩维,胡国才,李子尚.机体结构AE信号的统计分析研究[J].航空学报,2001,22(3):202-206. |
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| 作者姓名： | 张凤林 韩维 胡国才 李子尚 |
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| 作者单位： | 1. 国防科技大学系统工程研究所,
2. 海军航空工程学院机械工程系, |
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| 摘 要： | 对机体结构声发射数据的表征参数进行分析,建立了数据处理的统计模型,并运用该模型分析了某型飞机全机疲劳试验和某现役飞机随机机载声发射监测数据,提出了结构损伤判据,可供实际应用。
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| 关 键 词： | 声发射 监测 疲劳裂纹 数理统计 |
| 文章编号： | 1000-6893(2001)03-0202-05 |
| 修稿时间： | 2000年2月15日 |
STATISTICAL ANALYSES OF AE DATA FROM AIRCRAFT |
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| ZHANG Feng-lin,HAN Wei,HU Guo-cai,LI Zi-shang.STATISTICAL ANALYSES OF AE DATA FROM AIRCRAFT[J].Acta Aeronautica et Astronautica Sinica,2001,22(3):202-206. |
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| Authors: | ZHANG Feng-lin HAN Wei HU Guo-cai LI Zi-shang |
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| Institution: | 1. Research Institute of System Engineering, National University of Defence Technology, Changsha 410073, China;2. Department of Mechanical Engineering, Naval Aeronautical Eng ineering Academy, Yantai 264001, China |
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| Abstract: | AE technique can be used to monitor the formation and development of fatigue cracks in steel structure dynamically and continuously. In this paper, a mathematical statistical model is established by analyzing characteristic parameters of AE data from aircraft. By using it, the authors make a study of AE data from an aircraft during its fatigue test and a fighter structure during its flight. On this basis, a practical damage standard is advanced, which can be applied to judge whether cracks are being formed or developed in an aircraft under given probability. At the end of the paper, the research orientations are given to the establishment of a more general standard. |
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| Keywords: | acoustic emission monitor fatigue crack mathematical statistics |
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