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	2014-03-01T01:18:28Z
dc.date.available	2014-03-01T01:18:28Z
dc.date.issued	2002	en
dc.identifier.issn	1070-9622	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15033
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0036457276&partnerID=40&md5=d1eb3017f3ea7676ff3e6f5d9c8a82d2	en
dc.subject	Bearing	en
dc.subject	Demodulation	en
dc.subject	Envelope	en
dc.subject	Fault detection	en
dc.subject	Wavelets	en
dc.subject.classification	Acoustics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Demodulation	en
dc.subject.other	Roller bearings	en
dc.subject.other	Signal detection	en
dc.subject.other	Wavelet transforms	en
dc.subject.other	Vibration response	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	journalArticle	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Vibration signals resulting from roller bearing defects, present a rich content of physical information, the appropriate analysis of which can lead to the clear identification of the nature of the fault. The envelope detection or demodulation methods have been established as the dominant analysis methods for this purpose, since they can separate the useful part of the signal from its redundant contents. The paper proposes a new effective demodulation method, based on the wavelet transform. The method fully exploits the underlying physical concepts of the modulation mechanism, present in the vibration response of faulty heatings, using the excellent time-frequency localization properties of the wavelet analysis. The choice of the specific wavelet family is marginal to their overall effect, while the necessary number of wavelet levels is quite limited. Experimental results and industrial measurements for three different types of beating faults confirm the validity of the overall approach.	en
heal.publisher	IOS PRESS	en
heal.journalName	Shock and Vibration	en
dc.identifier.isi	ISI:000180051400004	en
dc.identifier.volume	9	en
dc.identifier.issue	6	en
dc.identifier.spage	293	en
dc.identifier.epage	306	en