A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development

Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. Although the fundamentals of the technique are simple, the analysis of data obtained in the presence of simultaneously occurring synchronous resonances is problematic. A class of autoregressive-based met...

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Main Authors:	J. Gallego-Garrido, G. Dimitriadis, J. R. Wright
Format:	Article
Language:	English
Published:	Hindawi Limited 2007-01-01
Series:	International Journal of Rotating Machinery
Online Access:	http://dx.doi.org/10.1155/2007/27247

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spelling	doaj-5b0f7c40ee6d4111a915a8142c43b4d22020-11-24T22:27:20ZengHindawi LimitedInternational Journal of Rotating Machinery1023-621X1542-30342007-01-01200710.1155/2007/2724727247A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical DevelopmentJ. Gallego-Garrido0G. Dimitriadis1J. R. Wright2Experimental Vibrations, Rolls-Royce PLC, P.O. Box 31, Derby DE24 8DJ, UKSchool of Mechanical Aerospace and Civil Engineering, University of Manchester, Simon Building, Oxford Road, Manchester M13 9PL, UKSchool of Mechanical Aerospace and Civil Engineering, University of Manchester, Simon Building, Oxford Road, Manchester M13 9PL, UKBlade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. Although the fundamentals of the technique are simple, the analysis of data obtained in the presence of simultaneously occurring synchronous resonances is problematic. A class of autoregressive-based methods for the analysis of blade tip timing data from assemblies undergoing two simultaneous resonances has been developed. It includes approaches that assume both sinusoidal and general blade tip responses. The methods can handle both synchronous and asynchronous resonances. An exhaustive evaluation of the approaches was performed on simulated data in order to determine their accuracy and sensitivity. One of the techniques was found to perform best on asynchronous resonances and one on synchronous resonances. Both methods yielded very accurate vibration frequency estimates under all conditions of interest.http://dx.doi.org/10.1155/2007/27247
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	J. Gallego-Garrido G. Dimitriadis J. R. Wright
spellingShingle	J. Gallego-Garrido G. Dimitriadis J. R. Wright A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development International Journal of Rotating Machinery
author_facet	J. Gallego-Garrido G. Dimitriadis J. R. Wright
author_sort	J. Gallego-Garrido
title	A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development
title_short	A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development
title_full	A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development
title_fullStr	A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development
title_full_unstemmed	A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development
title_sort	class of methods for the analysis of blade tip timing data from bladed assemblies undergoing simultaneous resonances—part i: theoretical development
publisher	Hindawi Limited
series	International Journal of Rotating Machinery
issn	1023-621X 1542-3034
publishDate	2007-01-01
description	Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. Although the fundamentals of the technique are simple, the analysis of data obtained in the presence of simultaneously occurring synchronous resonances is problematic. A class of autoregressive-based methods for the analysis of blade tip timing data from assemblies undergoing two simultaneous resonances has been developed. It includes approaches that assume both sinusoidal and general blade tip responses. The methods can handle both synchronous and asynchronous resonances. An exhaustive evaluation of the approaches was performed on simulated data in order to determine their accuracy and sensitivity. One of the techniques was found to perform best on asynchronous resonances and one on synchronous resonances. Both methods yielded very accurate vibration frequency estimates under all conditions of interest.
url	http://dx.doi.org/10.1155/2007/27247
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A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part I: Theoretical Development

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