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TECHNICAL PAPERS

Defect Detection for Bearings Using Envelope Spectra of Wavelet Transform

[+] Author and Article Information
D. F. Shi

Institute of Vibration Engineering Research, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, PR China

W. J. Wang

Department of Engineering & Design, University of Sussex, Brighton BN1 9QT, England

L. S. Qu

Research Institute of Diagnostics and Cybernetics, Xian Jiaotong University, Xian 710049, PR China

J. Vib. Acoust 126(4), 567-573 (Dec 21, 2004) (7 pages) doi:10.1115/1.1804995 History: Received October 01, 2002; Revised June 01, 2004; Online December 21, 2004
Copyright © 2004 by ASME
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References

Figures

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Typical wave form and corresponding spectrum obtained from a rolling element bearing with a defect on (a) outer race, (b) inner race, and (c) rollers
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Experimental setup for rolling element bearing testing
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Waveform and corresponding spectrum obtained from a normal rolling element bearing
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Waveform and corresponding spectrum obtained from a rolling element bearing with a defect on outer race
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Waveform and corresponding spectrum obtained from a rolling element bearing with a defect on inner race
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Waveform and corresponding spectrum obtained from a rolling element bearing with a defect in rollers
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Wavelet-based envelope spectra obtained from a normal rolling element bearing
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The wavelet-based envelope spectra obtained from a rolling element bearing with a defect on outer race
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Wavelet-based envelope spectra obtained from a rolling element bearing with a defect on inner race
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Wavelet-based envelope spectra obtained from a rolling element bearing with a defect in a roller
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Shannon entropy of wavelet-based envelope spectra obtained from a rolling element bearing with a defect on outer race

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