Abstract
Monitoring of potential bearing faults in operation is of critical importance to safe operation of high speed trains. One of the major challenges is how to differentiate relevant signals to operational conditions of bearings from noises emitted from the surrounding environment. In this work, we report a procedure for analyzing acoustic emission signals collected from rolling bearings for diagnosis of bearing health conditions by examining their morphological pattern spectrum (MPS) through a multi-scale morphology analysis procedure. The results show that acoustic emission signals resulted from a given type of bearing faults share rather similar MPS curves. Further examinations in terms of sample entropy and Lempel-Ziv complexity of MPS curves suggest that these two parameters can be utilized to determine damage modes.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant 51205017), the National Science and Technology Support Program (Grant 2015BAG12B01) and the National Basic Research Program of China (Grant 2015CB654805)..
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Wang, WJ., Cui, LL. & Chen, DY. Multi-scale morphology analysis of acoustic emission signal and quantitative diagnosis for bearing fault. Acta Mech. Sin. 32, 265–272 (2016). https://doi.org/10.1007/s10409-015-0529-z
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DOI: https://doi.org/10.1007/s10409-015-0529-z