Defect Detection for Bearings Using Envelope Spectra of Wavelet Transform

Shi, D F, Wang, W J and Qu, L S (2004) Defect Detection for Bearings Using Envelope Spectra of Wavelet Transform. Journal of Vibration and Acoustics, 126 (4). pp. 567-573. ISSN 1048-9002

Full text not available from this repository.

Abstract

In order to overcome the shortcomings in the traditional envelope analysis in which manually specifying a resonant frequency band is required, a new approach based on the fusion of the wavelet transform and envelope spectrum is proposed for detecting and localizing defects in rolling element bearings. This approach is capable of completely extracting the characteristic frequencies related to the defect from the resonant frequency band. Based on the Shannon entropy of wavelet-based envelope spectra, a criterion to select optimal scale to monitor the condition of bearings is also presented. Experiment results show that the proposed approach is sensitive and reliable in detecting defects on the outer race, inner race, and rollers of bearings.

Item Type: Article
Additional Information: To overcome shortcomings in traditional envelope analysis for manually specifying the resonant frequency band, the new approach is based on fusion of wavelet transform and envelope spectrum for detecting and localizing the defect on the rolling element in bearings. This approach can completely extract the characteristic frequencies of defect from resonant frequency band overall. Practical example shows that the proposed approach is sensitive and reliable to detect defects on outer race, inner race and rolling element. Wang (w.j.wang@sussex.ac.uk) acted as a supervisor of Shi (dongfengshi@nottingham.ac.uk ), and supported the work, contributed in technical details and certified the writing presentation.
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: William Wang
Date Deposited: 06 Feb 2012 19:25
Last Modified: 06 Jul 2012 09:00
URI: http://sro.sussex.ac.uk/id/eprint/20489
📧 Request an update