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RESEARCH PAPERS

Two-Stage Adaptive Line Enhancer and Sliced Wigner Trispectrum for the Characterization of Faults from Gear Box Vibration Data

[+] Author and Article Information
S. K. Lee

Department of Mechanical Engineering, Inha University, Yong Hyan-Dong 253, Inchon, Korea

P. R. White

Institute of Sound and Vibration Research, University of Southampton, Southampton SO17 1BJ, UK

J. Vib. Acoust 121(4), 488-494 (Oct 01, 1999) (7 pages) doi:10.1115/1.2894007 History: Received July 01, 1997; Revised January 01, 1999; Online February 26, 2008

Abstract

Impulsive sound and vibration signals in gears are often associated with faults which result from impacting and as such these impulsive signals can be used as indicators of faults. However it is often difficult to make objective measurements of impulsive signals because of background noise signals. In order to ease the measurement of impulsive sounds embedded in background noise, it is proposed that the impulsive signals are enhanced, via a two stage ALE (Adaptive Line Enhancer), and that these enhanced signals are then analyzed in the time and frequency domains using a Wigner higher order time-frequency representation. The effectiveness of this technique is demonstrated by application to gear fault data.

Copyright © 1999 by The American Society of Mechanical Engineers
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