A fast AE signal processing method during aircraft fatigue test under flight loading conditions
During the full scale civil aircraft fatigue test under flight loading conditions, acoustic emission was used to monitor the health conditions of the key components, thus guaranteeing the success of the whole test by the early detection of fatigue cracks. With high background noise due to severe vibration and high sound wave attenuation of the complex components, the AE work, especially the signal acquiring and processing, were confronted with great difficulties and high challenges. This paper presents a fast AE signal processing method with the varying trend analysis of the AE characteristic parameters, combining the spatial filtering techniques with multi-parameter correlation analysis identifications. A case study was undertaken to monitor the initiation of a fatigue crack in the bolt hole located at the central wing and the right wing jointing area. The results showed that the proposed fast processing method for AE signal successfully realized the realtime monitoring of the initiation and growth of the fatigue crack in the bolt hole.
Jianfei Feng Jun Zhang Jianbin Ge Mingren Li
Shanghai Aircraft Design and Research Institute, Shanghai ,200232,China Shanghai Aircraft Design and Research Institute,, Shanghai ,200232,China
国际会议
World Conference on Acoustic Emission(2011年声发射国际会议)
北京
英文
377-382
2011-08-24（万方平台首次上网日期，不代表论文的发表时间）