基于声发射技术的铁路货车滚动轴承故障诊断研究

Research on Fault Diagnosis of Railway Freight Rolling Bearing based on Acoustic Emission Technique

采用声发射技术对铁路货车滚动轴承的故障诊断是一种新型的无损检测方法。对采集到的声发射信号进行基于小波变换的带通滤波处理后,故障特征信息明显,容易区分出铁路货车滚动轴承的不同状态。将声发射技术用于铁路货车滚动轴承的状态监测与诊断中,经大量试验证明,该法能准确区分轴承状态的好坏与故障类型。

Railway trucks roiling bearing fault diagnosis technology by using acoustic emission is a new type of non-destructive testing methods. After treat the band-pass filter based on the wavelet transform to the collected acoustic emission signals, the fault feature information is clear and it is easily to distinguish the different railway freight roller bearing state. A large number of experiments can prove that the conditions of the bearing and the fault style can be accurate distinguished, when the acoustic emission technique applies to the condition detection and diagnosis of railway freight rolling bearing.