A time-frequency envelope estimation method for detection of bearing-localized defects

Nikolaou, NG; Antoniadis, IA

dc.contributor.author	Nikolaou, NG	en
dc.contributor.author	Antoniadis, IA	en
dc.date.accessioned	2014-03-01T02:41:41Z
dc.date.available	2014-03-01T02:41:41Z
dc.date.issued	2001	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30596
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035790805&partnerID=40&md5=e07c29cc5e139478acd8185732062630	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035790805&partnerID=40&md5=e07c29cc5e139478acd8185732062630	en
dc.subject	Bearing	en
dc.subject	Envelope estimation	en
dc.subject	Vibration	en
dc.subject	Wavelet	en
dc.subject.other	Algorithms	en
dc.subject.other	Bearings (machine parts)	en
dc.subject.other	Computer simulation	en
dc.subject.other	Defects	en
dc.subject.other	Failure analysis	en
dc.subject.other	Fast Fourier transforms	en
dc.subject.other	Modulation	en
dc.subject.other	Parameter estimation	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Wavelet transforms	en
dc.subject.other	Defect detection	en
dc.subject.other	Morlet wavelet	en
dc.subject.other	Rolling element bearing	en
dc.subject.other	Time frequency envelope estimation method	en
dc.subject.other	Vibration measurement	en
dc.title	A time-frequency envelope estimation method for detection of bearing-localized defects	en
heal.type	conferenceItem	en
heal.publicationDate	2001	en
heal.abstract	This paper proposes a new method for the estimation of the envelope of signals resulting from rolling element bearing-localized defects, based on the use of a shifted Morlet wavelet family. Using a time-frequency representation of the signal, the method is designed in a way that can exploit the underlying physical concepts of the modulation mechanism, present in the vibration response of bearings with localized defects. Systematic selection criteria for the automated choice of the critical parameters that characterize the Morlet wavelet family are used. The method is evaluated by using actual vibration signals measured from bearings with defects at different locations.	en
heal.journalName	Proceedings of the ASME Design Engineering Technical Conference	en
dc.identifier.volume	6 A	en
dc.identifier.spage	39	en
dc.identifier.epage	46	en