... the “chaotic amplification of attractor distortion” as a new metric to assess structural health in multivariate systems as a promising approach to introduce nonlinear time series concepts in the field of condition monitoring. Finally, Nichols et al. [( 9 )] presented a detailed methodology to apply the chaotic...

... 25 01 2012 25 01 2012 accelerometers acoustic emission condition monitoring fault diagnosis feature extraction gears microphones principal component analysis sensor fusion tachometers time-frequency analysis vibrations wind turbines wind turbine gearbox condition...

.... Depending on the mass of the test object, the test rig can be operated at rotation speeds of up to 250,000 rpm. 15 04 2011 20 04 2011 07 11 2011 07 11 2011 blades calibration condition monitoring deformation energy conservation fibre optic sensors light interferometry...

... that the concentration capability of a least-squares-based algorithm could be improved by introducing a regularisation term that promotes sparsity. 08 04 2011 09 04 2011 01 09 2011 01 09 2011 compressors condition monitoring electrical accidents fault diagnosis gas turbines jet engines...

... for accurate diagnostics of that particular component. It is an advantage for GPA practitioners to know that many options exist if they want to focus on diagnostics for particular components. 28 04 2010 05 08 2010 13 05 2011 13 05 2011 condition monitoring engines fault...

.... If the standard deviation of the data falls below defined constraints, the engine is assumed to be at a steady-state operating point and the mean measurement data at that point are archived for subsequent condition monitoring purposes. The fundamental design of the steady-state data filter is completely generic...

..., first stage nozzle segment are presented and discussed. 17 05 2010 25 05 2010 22 03 2011 22 03 2011 condition monitoring corrosion fatigue creep gas turbines inspection metallography nozzles optical microscopes remaining life assessment scanning electron microscopy...

... to generate confidence intervals for them. turbines diagnostics metrics cost curves confusion matrices aerospace engines aircraft condition monitoring costing fault diagnosis gas turbines 25 03 2009 06 04 2009 27 01 2010 27 01 2010 2010 Her Majesty...

... GPAs are applied to the test case to predict both the deviated engine performance and engine degradation. 23 03 2009 26 03 2009 25 01 2010 25 01 2010 aerospace engines aerospace testing compressors condition monitoring gas turbines gas turbine engine performance...

... removes Gaussian noise and outliers and could therefore greatly improve the accuracy of diagnostic systems. 29 10 2008 19 06 2009 12 01 2010 12 01 2010 acoustic signal processing condition monitoring jet engines median filters noise abatement recursive filters signal...

... levels of degradation are outlined, thus providing guidance for condition monitoring practice. 29 10 2008 06 11 2008 15 07 2009 compressors condition monitoring gas turbines Gas turbines are widely used in industrial applications. They usually are either single shaft...

... , 1st ed., BB-Soft , Belgrade . Mishra , C. , and Muncherji , S. , 1996 , “ Expert System for Wear Debris Analysis—A Powerful Tool for Condition Monitoring ,” Trends in NDE Science & Technology , Proceedings of the 14th World Conference on Non-Destructive Testing , New Delhi, pp...

... I is the identity matrix but also the transition matrix of the health parameters in the application at hand. 01 04 2008 02 04 2008 13 10 2008 adaptive estimation aerospace engines condition monitoring gas turbines Kalman filters gas path analysis adaptive...

...A. L. Heyes; J. P. Feist; X. Chen; Z. Mutasim; J. R. Nicholls This paper describes recent developments of the thermal barrier sensor concept for nondestructive evaluation (NDE) of thermal barrier coatings (TBCs) and online condition monitoring in gas turbines. Increases in turbine inlet temperature...

..., which are likely to fail and not be detected when using test-cell data, is reduced compared to in-flight data. 02 05 2007 06 01 2008 26 08 2008 condition monitoring fuzzy logic gas turbines iterative methods testing The goal of gas-path diagnostics is to identify...

.... condition monitoring gas turbines power generation faults regression analysis wavelet transforms health monitoring wavelets statistics gas turbines experimental data Dynamic systems may have a variety of input (e.g., force, heat, and voltage) and output (e.g., acceleration...

... configuration. While relatively simple to implement, the newly developed diagnosis tool exhibits a much better accuracy than the original Kalman filter in the presence of model biases. 20 06 2006 29 10 2007 26 03 2008 condition monitoring engines Kalman filters least squares...

... by this robust estimation approach are highlighted through a series of typical test cases that may be encountered on current turbine engines. Volponi , A. J. , 2003 , Foundation of Gas Path Analysis (Part I and II) , von Karman Institute Lecture Series: Gas Turbine Condition Monitoring and Fault...

... 03 08 2007 22 01 2008 aerospace components aerospace engines aircraft maintenance condition monitoring turbomachinery Our decision to model the APU as a collection of prognostic states evolving in a hybrid state space is based on the work done by Khalak and Hess ( 1 ) under...

... 2006 02 08 2007 22 01 2008 compressors condition monitoring gas turbines gas turbine fouling preventive maintenance condition based maintenance online washing offline washing With the growing interest in life cycle costs for heavy-duty gas turbines, equipment...