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Research on Feature Extraction Experiment for Acoustic Emission Signal of Rotor Crack Fault

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Abstract:

The acoustic emission extraction experiment of rotor crack fault has done on the rotor comprehensive fault simulation test-bed. Characteristics of acoustic emission signal of different crack rotors in various depth and conditions are analyzed. The noise-disturbing problems and the noise-eliminating methods of the acoustic emission signal were researched in the paper, and the comparison has been done with the vibration method of crack fault diagnosis by the experiment. The advantages of acoustic emission technique has been highlighted in the early period crack fault diagnosis. The wavelet packet technique was applied to obtain the characteristics of acoustic emission signal of the rotor crack propagation. the diagnosis results are shown to be quite clear, reliable and accurate.

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Periodical:

Applied Mechanics and Materials (Volumes 34-35)

Pages:

1005-1009

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.34-35.1005

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Online since:

October 2010

Authors:

Kuan Fang He, Xue Jun Li, X.C. Li

Keywords:

Acoustic Emission (AE), Feature Extraction, Rotor Crack, Wavelet Packet Technique

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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