AE Monitoring During Aircraft Flight Loading Conditions Fatigue Test
摘 要
介绍了某型飞机全尺寸机体飞行载荷疲劳试验过程中对关键部件(包括不可接近部件)疲劳损伤的声发射(AE)实时监测技术。在强冲击、高振动背景下,利用基于时间、空间、幅度或能量滤波等多种信号处理方式,对预处理后的AE信号以趋势分析为主,多参数分析综合验证,另辅以其它方法(包括波形分析),对一些关键部位的健康状态进行AE实时在线监测。成功预报了机翼对接区域某螺栓孔夹层裂纹的萌生,为保证机体飞行载荷疲劳试验顺利进行起到了重要作用。
Abstract
The technology of acoustic emission(AE) real time monitoring the critical structures (including inaccessible components) during aircraft flight loading conditions fatigue test was introduced. In a noise background due to severe shock and vibration, first of all, AE signals were pre-processed based on time filtering, amplitude filtering, and energy filtering as well as based on spatial filtering techniques. After acquiring the pre-processed AE signal, we adopted a new AE signal analysis principle that gave priority to AE diagnostic parameter trend analysis, multi-parameter analysis identifications and further looked for others(including waveform analysis) as assistant method. Real time monitoring of these critical structures was realized, and was successful in predicting a crack initiation in an interlayer of a bolt hole. The mean of AE monitoring played a key role for the fulfillment of the flight loading conditions fatigue test(FLCFT).
中图分类号 TG115.28
所属栏目 2008远东无损检测新技术论坛优秀论文选登
基金项目
收稿日期 2008/6/25
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备注冯剑飞(1979-),男,硕士研究生,研究方向:声发射技术及应用。
引用该论文: FENG Jian-Fei,WU Guan-Hua,GENG Rong-Sheng,WU Wei. AE Monitoring During Aircraft Flight Loading Conditions Fatigue Test[J]. Nondestructive Testing, 2008, 30(8): 526~529
冯剑飞,邬冠华,耿荣生,吴伟. 某型飞机飞行载荷疲劳试验过程中的声发射监测[J]. 无损检测, 2008, 30(8): 526~529
被引情况:
【1】王丙阳,耿荣生,邬冠华, "声发射技术在飞机主起落架疲劳试验中的应用",无损检测 33, 22-25(2011)
【2】王丙阳,耿荣生,周炳如,李众城, "飞机主起落架疲劳试验中的声发射信号处理",无损检测 34, 2-6(2012)
【3】刘文斌,耿荣生,任吉林, "某型飞机疲劳试验过程中关键结构的AE监测",无损检测 31, 777-780(2009)
【4】陈冲,吕震,刘兵,王风,孔祥斌,李木森, "声发射信号在圆柱型波导杆中的传播特性",理化检验-物理分册 49, 293-295(2013)
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参考文献
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【4】耿荣生,沈功田,刘时风.模态声发射理论\[J\].无损检测,2002,24(7):302-306.
【2】耿荣生,沈功田,刘时风.基于波行分析的声发射信号处理技术\[J\].无损检测,2002,24(6):302-306.
【3】Dunegan HL. Modal analysis of acoustic emission signals\[J\]. Journal of Acoustic Emission,1998,15:1-4.
【4】耿荣生,沈功田,刘时风.模态声发射理论\[J\].无损检测,2002,24(7):302-306.
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