A Class of Methods for the Analysis of Blade Tip Timing  Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part II: Experimental Validation

Gallego-Garrido, J.; Dimitriadis, G.; Carrington, I. B.; Wright, J. R.

doi:https://doi.org/10.1155/2007/73624

International Journal of Rotating Machinery

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Research Article | Open Access

Volume 2007 | Article ID 073624 | https://doi.org/10.1155/2007/73624

A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part II: Experimental Validation

J. Gallego-Garrido,¹G. Dimitriadis,²I. B. Carrington,²and J. R. Wright²

Academic Editor: Eric Maslen

Received06 Mar 2006

Revised17 Nov 2006

Accepted02 Jan 2007

Published07 Mar 2007

Abstract

Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. In Part I of this work a class of methods for the analysis of blade tip timing data from bladed assemblies undergoing two simultaneous synchronous resonances was developed. The approaches were demonstrated using data from a mathematical simulation of tip timing data. In Part II the methods are validated on an experimental test rig. First, the construction and characteristics of the rig will be discussed. Then, the performance of the analysis techniques when applied to data from the rig will be compared and analysed. It is shown that accurate frequency estimates are obtained by all the methods for both single and double resonances. Furthermore, the recovered frequencies are used to calculate the amplitudes of the blade tip responses. The presence of mistuning in the bladed assembly does not affect the performance of the new techniques.

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Copyright

Copyright © 2007 J. Gallego-Garrido et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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