... will be unstable, which manifests itself as a subsynchronous vibration typically between 0.4 X−0.5 X, where X is the shaft rotational speed [( 1 ), 2 ]. compressors gas turbines machine bearings rotors vibration measurement 12 09 2010 22 09 2011 23 02 2012 23 02 2012 2012...

... vibration measurement 08 09 2009 13 10 2009 12 08 2010 12 08 2010 2010 American Society of Mechanical Engineers ...

... combustion combustion equipment flames flow visualisation gas turbines jets measurement by laser beam pulsatile flow thermoacoustics turbulence vibration measurement The well-known industrial problem that motivates this work is the limitation on performance of power and propulsion gas...

... vibration measurement Most engine control systems nowadays are torque based, meaning that ignition, injection, and all the control parameters are set in such a way to produce a desired torque level, while respecting other goals, for example, emissions or drivability. Information on the real torque...

... combustion equipment computational fluid dynamics elasticity fatigue finite element analysis nitrogen compounds pressure sensors structural acoustics temperature distribution vibration measurement vibrations 06 03 2007 04 03 2008 16 06 2008 2008 American Society...

... transforms vibration measurement rotors Blade faults represent a major and common source of problem in power generation gas turbines. Over the years, extensive research had been undertaken on this subject. Previous work reported in the literature included studies on the characteristics of various...

.... rotors condition monitoring fatigue cracks vibration measurement crack detection 16 June 2003 01 October 2002 01 March 2003 15 04 2005 Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication...

... behavior. compressors vibration measurement acoustic variables measurement accelerometers microphones gas turbines engines In Fig. 5 the behavior of acoustic pressure signals along the same characteristic curve is shown. From this figure we can see that the reduction of the mass flow...

... the use of trial weights, if a rotor model is available. A procedure is developed in this paper to balance flexible rotors using complex modes and complex vibration measurements. It is shown that a complex rotor model is essential for the success of the technique. Moreover, careful calibration...

... been reviewed by Edwards et al. 10 . turbogenerators vibration measurement parameter estimation state estimation machine bearings 03 June 2002 01 Dec 2001 01 Mar 2002 07 06 2004 Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN...

... vibration measurement observability controllability transducers eddy currents centralised control machine control turbines Active control of blade vibrations using shaft-based actuation has been studied by very few researchers. The controllability and observability of a bladed disk controlled...

... to quantify two characteristics of the humming signals, namely frequency and damping and their variation with load. The results have then been compared with data obtained on three operational gas turbines. gas turbines combustion fuel natural gas technology modelling vibration measurement...

... identifying frequency or engine order using a small number of probes. This paper presents a new analysis method for identifying synchronous resonance engine order using two tip-timing vibration measurements. The measurements are made at different locations on the turbomachinery casing using a minimum of two...