Casing vibration and gas turbine operating conditions

Mathioudakis, K; Loukis, E; Papailiou, KD

dc.contributor.author	Mathioudakis, K	en
dc.contributor.author	Loukis, E	en
dc.contributor.author	Papailiou, KD	en
dc.date.accessioned	2014-03-01T02:47:53Z
dc.date.available	2014-03-01T02:47:53Z
dc.date.issued	1989	en
dc.identifier.issn	04021215	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33406
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0024866410&partnerID=40&md5=b8e61a1fb56fb5d3de2016e77bada73f	en
dc.subject.other	Accelerometers--Applications	en
dc.subject.other	Compressors--Gas Turbines	en
dc.subject.other	Industrial Plants--Gas Turbines	en
dc.subject.other	Mathematical Techniques--Transfer Functions	en
dc.subject.other	Pressure Transducers--Applications	en
dc.subject.other	Compressor Casing Vibration	en
dc.subject.other	Gas Turbine Condition Monitoring	en
dc.subject.other	Vector Transfer Functions	en
dc.subject.other	Vibration Monitoring System	en
dc.subject.other	Gas Turbines	en
dc.title	Casing vibration and gas turbine operating conditions	en
heal.type	conferenceItem	en
heal.publicationDate	1989	en
heal.abstract	The results from an experimental investigation of the compressor casing vibration of an industrial Gas Turbine are presented. It is demonstrated that statistical properties of acceleration signals can be linked with engine operating conditions. The power content of such signals is dominated by contributions originating from the stages of the compressor, while the contribution of the shaft excitation is secondary. Using non-parametric identification methods, accelerometer outputs are correlated to unsteady pressure measurements taken by fast response transducers at the inner surface of the compressor casing. The transfer functions allow reconstruction of unsteady pressure signal features from the accelerometer readings. A possibility is thus provided, for 'seeing' the unsteady pressure field of the rotor blades without actually penetrating through the casing, but by simply observing its external surface vibrations.	en
heal.publisher	Publ by American Soc of Mechanical Engineers (ASME), New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers (Paper)	en