Ezperimental Study on Rubbing Acoustic Emission for Rotor-bearing system Based on Parameter Analysis
Rubbing between the rotor and the stator is the frequent fault and will cause very serious accident,even catastrophe,to rotating machinery.Therefore,timely detection of such rubbing is very important avoid severe consequences.Vibration based methods are very mature and traditional methods but not effective to detect incipient rubbing in rotating machinery.Rubbing between the rotor and the stator will cause elastic strain in the rubbing location and thus can produce acoustic emission (AE).Apparently,such AE contains direct and abundant information about the rubbing and can be used to detect and diagnose such fault effectively.In this paper,the AE based method is proposed for detecting and identifying the rubbing of the rotor-bearing system.An experimental study is presented to investigate the characteristics and features of rubbing AE using parameter analysis method.The results show that AE is very sensitive to the rubbing and AE parameters can reveal the characteristics and features of rubbing AE.Parameter analysis demonstrates that rubbing AE contains multiple modals,which will attenuate with propagation by negative exponent manner.
Rubbing Acoustic emission Rotating machinery Parameter analysis
Yongyong He Xinyun Yin
The State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,P.R.China
国际会议
The 8th International Conference on Damage Assessment of Structures(DAMAS 2009)(第八届结构损伤评价国际学术会议)
北京
英文
513-519
2009-08-03（万方平台首次上网日期，不代表论文的发表时间）