A comparison of blade tip timing data analysis methods

Carrington, Ian B.; Wright, J.F.; Cooper, Jonathan E.; Dimitriadis, Grigorios

doi:10.1243/0954410011533293

Cited by 112 publications

(66 citation statements)

References 4 publications

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“…The basic concept of the blade tip-timing method has been developed in [1][2][3]. Several probes are installed in the engine casing above the rotor, and the blade transit times between the probes are measured.…”

Section: The Blade Tip-timing Methodsmentioning

confidence: 99%

“…The system described by (1) and (6) is equivalent to the following continuous time state-space model [4]:…”

Section: The Mathematical Modelmentioning

confidence: 99%

“…Generally, blade vibrations during operation are difficult to measure and require many sensors in order to be detected fully. Two standard measuring methods are used to obtain blade vibrations: strain gages and frequency-modulated grid systems [1][2][3]. The first method requires the installation of strain gages on some of the blades.…”

Section: Introductionmentioning

confidence: 99%

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Parameter Identification of Bladed Assemblies Using a Subspace Method

Salhi

Lardiès²,

Berthillier³

2008

Int. J. Simul. Multidisci. Des. Optim.

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-This paper is aimed at identifying a dynamical model for bladed assemblies such as turbines. Unknown excitation forces are applied to bladed disk assemblies leading to forced vibration responses. Non contact measurement of such vibrations using tip-timing has become an industrial standard procedure and current research focuses on analysis methods for interpretation of measured vibrations. Our purpose is to develop a subspace method for the identification of blade's natural frequencies, damping ratios and mode shapes using blade tip-timing data. The importance of the developed procedure results in the fact that in a narrow band frequency, less than 2 Hz, twenty two modes can be easily identified. A detailed description of this method and results are presented.

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Section: The Blade Tip-timing Methodsmentioning

confidence: 99%

“…The system described by (1) and (6) is equivalent to the following continuous time state-space model [4]:…”

Section: The Mathematical Modelmentioning

confidence: 99%

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Parameter Identification of Bladed Assemblies Using a Subspace Method

Salhi

Lardiès²,

Berthillier³

2008

Int. J. Simul. Multidisci. Des. Optim.

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“…Blade tip timing [2][3][4] and casing pressure measurements [5] have been employed as non-contact techniques for blade vibration analysis. These techniques are more reliable than contact techniques in terms of life expectancy under the very hostile conditions of high temperatures and pressures under which turbine blades operate [2].…”

Section: Turbomachinery Vibration Measurementmentioning

confidence: 99%

Rotating blade vibration analysis using photogrammetry and tracking laser Doppler vibrometry

Gwashavanhu

Oberholster

Heyns

2016

Mechanical Systems and Signal Processing

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“…More details on the postprocessing stage of the data collection procedure are given by Carrington [2] and GallegoGarrido [5].…”

Section: Data Postprocessingmentioning

confidence: 99%

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

Gallego-Garrido

Dimitriadis

Carrington

et al. 2007

International Journal of Rotating Machinery

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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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A comparison of blade tip timing data analysis methods

Cited by 112 publications

References 4 publications

Parameter Identification of Bladed Assemblies Using a Subspace Method

Parameter Identification of Bladed Assemblies Using a Subspace Method

Rotating blade vibration analysis using photogrammetry and tracking laser Doppler vibrometry

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

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