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 。
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.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2001年第3期202-206,共5页
Acta Aeronautica et Astronautica Sinica
关键词
声发射
监测
疲劳裂纹
数理统计
机械结构
飞机
AE信号
Acoustic emissions
Cracks
Fatigue of materials
Fatigue testing
Statistical methods
Steel
