Blade fault recognition based on signal processing and adaptive fluid dynamic modelling

Stamatis, A; Aretakis, N; Mathioudakis, K

dc.contributor.author	Stamatis, A	en
dc.contributor.author	Aretakis, N	en
dc.contributor.author	Mathioudakis, K	en
dc.date.accessioned	2014-03-01T02:48:30Z
dc.date.available	2014-03-01T02:48:30Z
dc.date.issued	1997	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33869
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031381384&partnerID=40&md5=ee3bbf73f4d0c82ba24970458117f444	en
dc.subject.other	Equipment testing	en
dc.subject.other	Error detection	en
dc.subject.other	Fluid dynamics	en
dc.subject.other	Gas turbines	en
dc.subject.other	Mathematical models	en
dc.subject.other	Signal processing	en
dc.subject.other	Adaptive fluid dynamic model	en
dc.subject.other	Turbomachine blades	en
dc.title	Blade fault recognition based on signal processing and adaptive fluid dynamic modelling	en
heal.type	conferenceItem	en
heal.publicationDate	1997	en
heal.abstract	An approach for identification of faults in blades of a gas turbine, based on physical modelling is presented. A measured quantity is used as an input and the deformed blading configuration is produced as an output. This is achieved without using any kind of `signature', as is customary in diagnostic procedures for this kind of faults. A fluid dynamic model is used in a manner similar to what is known as `inverse design methods': the solid boundaries which produce a certain flow field are calculated by prescribing this flow field. In the present case a signal, corresponding to the pressure variation on the blade-to-blade plane, is measured. The blade cascade geometry that has produced this signal is then produced by the method. In the paper the method is described and applications to test cases are presented. The test cases include theoretically produced faults as well as experimental cases, where actual measurement data are shown to produce the geometrical deformations which existed in the test engine.	en
heal.publisher	ASME, New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en