... to be replaced as early as 6.5 years. Therefore sensing and condition monitoring (CM) systems are needed in order to obtain reliable information on the state and condition of different critical parts. The development and use of such technologies will allow companies to schedule actions at the right time...

... condition of the rotating equipment demonstrate the opportunity for system monitoring. 16 02 2011 19 08 2011 15 02 2012 15 02 2012 condition monitoring gas turbines maintenance engineering performance evaluation power generation reliability fault detection phase space...

... 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...

... compressor test rig at blade tip velocities up to 600 m/s are presented among others. 15 04 2011 20 04 2011 07 11 2011 07 11 2011 blades calibration condition monitoring deformation energy conservation fibre optic sensors light interferometry micrometry rotors...

... capability of the sparse estimator. In particular, the constraints help resolve a confusion issue between high pressure compressor and variable stator vanes faults. 08 04 2011 09 04 2011 01 09 2011 01 09 2011 compressors condition monitoring electrical accidents fault diagnosis...

... 13 05 2011 condition monitoring engines fault diagnosis gas turbines Components of a gas turbine engine may degrade over time during its operation. Hence, gas turbine health monitoring is essential for reliable, safe, and cost effective operation of gas turbine engines and may...

.... 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 small sample sizes. 25 03 2009 06 04 2009 27 01 2010 27 01 2010 aerospace engines aircraft condition monitoring costing fault diagnosis gas turbines turbines diagnostics metrics cost curves confusion matrices In the past 10 years, interest has grown...

... , “ Gas Path Analysis Applied to Turbine Engine Condition Monitoring ,” Paper No. AIAA-72-1082. Doel , D. L. , 1994 , “ An Assessment of Weighted-Least-Squares-Based Gas Path Analysis ,” ASME J. Eng. Gas Turbines Power 0742-4795 , 116 , pp. 366 – 373 . 10.1115/1.2906829 Borguet...

... 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...

... 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. 103 – 115 . Tumer , Y. I. , and Bajwa , A. , 1999 , “ A Survey of Aircraft Engine Health Monitoring Systems...

... is highlighted for a variety of simulated fault cases that may be encountered on a commercial aircraft engine. Volponi , A. J. , 2003 , “ Foundation of Gas Path Analysis (Part I and II) ,” Gas Turbine Condition Monitoring and Fault Diagnosis , von Karman Institute Lecture Series No. 1, von Karman...

...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...

... of that size to occur should be questioned. This is implemented via the standard MATLAB “lsqnonneg” function. CM condition monitoring EPR engine pressure ratio (Pt7/Pt2) FD fan duct FOD foreign object damage HPC high pressure compressor HPT high pressure turbine...

... 24 09 2007 29 04 2008 condition monitoring gas turbines power generation faults regression analysis wavelet transforms health monitoring wavelets statistics gas turbines experimental data Health monitoring strategies estimate the current and future conditions...

... 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...

... condition monitoring fault location fault tolerance gas turbines jet engines Kalman filters quadratic programming sensors engine health monitoring robust estimation sensor faults In the last four decades, many research efforts have been conducted to develop efficient fault detection...

... 09 12 2005 03 08 2007 22 01 2008 aerospace components aerospace engines aircraft maintenance condition monitoring turbomachinery An auxiliary power unit (APU) is a small turbo engine used primarily for starting the propulsion engines, provide bleed air...