Wavelet based demodulation of vibration signals generated by defects in rolling element bearings

Yiakopoulos, CT; Antoniadis, IA

dc.contributor.author	Yiakopoulos, CT	en
dc.contributor.author	Antoniadis, IA	en
dc.date.accessioned	2014-03-01T02:42:02Z
dc.date.available	2014-03-01T02:42:02Z
dc.date.issued	2001	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30741
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035791522&partnerID=40&md5=7ca101a0f7d69e62dc3e2e1525b7af43	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035791522&partnerID=40&md5=7ca101a0f7d69e62dc3e2e1525b7af43	en
dc.subject	Bearing	en
dc.subject	Demodulation	en
dc.subject	Envelope	en
dc.subject	Fault detection	en
dc.subject	Wavelets	en
dc.subject.other	Bandpass filters	en
dc.subject.other	Demodulation	en
dc.subject.other	Failure analysis	en
dc.subject.other	Frequency domain analysis	en
dc.subject.other	Frequency modulation	en
dc.subject.other	Low pass filters	en
dc.subject.other	Natural frequencies	en
dc.subject.other	Roller bearings	en
dc.subject.other	Time domain analysis	en
dc.subject.other	Wavelet transforms	en
dc.subject.other	Envelope detection	en
dc.subject.other	Fault diagnosis	en
dc.subject.other	Rolling element bearings	en
dc.subject.other	Vibration signals	en
dc.subject.other	Vibrations (mechanical)	en
dc.title	Wavelet based demodulation of vibration signals generated by defects in rolling element bearings	en
heal.type	conferenceItem	en
heal.publicationDate	2001	en
heal.abstract	Envelope detection or demodulation methods for bearing vibration response signals have been established as a dominant analysis method for bearing fault diagnosis, since they can separate the useful part of the signal from its redundant contents. A new effective demodulation method is proposed, based on the Discrete Wavelet Transform (DWT). The method fully exploits the underlying physical concepts of the modulation mechanism, present in the vibration response of faulty bearings, using the excellent time-frequency localization properties of the wavelet analysis. Two key elements, resulting to the successful implementation of the method, are its practical independence from the choice of the specific wavelet family to be used and the limited number of the wavelet levels, that are required for its practical application. Experimental results and industrial measurements for three different types of bearing faults, confirm the validity of the overall approach.	en
heal.journalName	Proceedings of the ASME Design Engineering Technical Conference	en
dc.identifier.volume	6 C	en
dc.identifier.spage	3187	en
dc.identifier.epage	3195	en