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Data Mining Based Full Ceramic Bearing Fault Diagnostic System Using AE Sensors

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4 Author(s)
David He ; Intelligent Systems Modeling & Development Laboratory, Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, USA ; Ruoyu Li ; Junda Zhu ; Mikhail Zade

Full ceramic bearings are considered the first step toward full ceramic, oil-free engines in the future. No research on full ceramic bearing fault diagnostics using acoustic emission (AE) sensors has been reported. Unlike their steel counterparts, signal processing methods to extract effective AE fault characteristic features and fault diagnostic systems for full ceramic bearings have not been developed. In this paper, a data mining based full ceramic bearing diagnostic system using AE based condition indicators (CIs) is presented. The system utilizes a new signal processing method based on Hilbert Huang transform to extract AE fault features for the computation of CIs. These CIs are used to build a data mining based fault classifier using a k-nearest neighbor algorithm. Seeded fault tests on full ceramic bearing outer race, inner race, balls, and cage are conducted on a bearing diagnostic test rig and AE burst data are collected. The effectiveness of the developed fault diagnostic system is validated using real full ceramic bearing seeded fault test data.

Published in:

IEEE Transactions on Neural Networks  (Volume:22 ,  Issue: 12 )