... more influence on effective damping levels and crossover frequencies when compared to rotor speed. 12 04 2011 30 06 2011 27 01 2012 27 01 2012 compressors mechanical testing rotors seals (stoppers) shock absorbers References 1 Childs , D. W...

... this measurement by developing a patented, high-frequency, high-amplitude shaker system, resulting in excitation over most of the subsynchronous range. 10 05 2010 09 08 2010 06 05 2011 06 05 2011 damping design engineering machine bearings mechanical testing rotors turbomachinery...

... parameters. The results of this normalization are used to compare the normalized experimental results with various models from the literature. 28 08 2009 27 01 2010 10 03 2011 10 03 2011 heat transfer mechanical testing pipes surface roughness thermal conductivity...

...) failure (mechanical) failure analysis fatigue cracks finite element analysis gas turbine power stations mechanical testing nozzles stress analysis surface cracks turbogenerators vibrations lock pin FEM vibration analysis gas turbine component failure Gas turbine blade and disk...

... ceramics corrosion protection corrosion protective coatings cracks delamination engines failure analysis mechanical stability mechanical testing optical microscopy oxidation scanning electron microscopy thermal barrier coatings turbines X-ray chemical analysis 22 12 2007 19 06...

... 02 10 2008 machine bearings mechanical testing rotational flow rotors turbomachinery gas foil bearing external pressurization rotordynamic stability imbalance response Gas foil bearings (GFBs) using engineered solid lubricants (coatings) have demonstrated an ultimate...

... flow restrictor sizes. The SFD-mechanical seal arrangement effectively prevents air ingestion and entrapment and generates predicable force coefficients for the range of frequencies tested. 10 05 2007 06 06 2007 29 04 2008 aircraft flow control friction lubricants mechanical...

... bearings turbomachinery elastic constants damping mechanical testing bending gas bearings rotordynamics oil-free turbomachinery Gas film bearings offer low friction and small power dissipation, enabling their successful application in air-cycle machines, high-precision instruments...

.... 804 – 813 . foils machine bearings turbomachinery damping elastic constants mechanical testing elastic deformation spot welding Gas foil bearing technology has made significant progress during the last 30 years . Foil bearings (FBs...

.... 04 June 2001 01 March 2001 24 09 2002 hot working forging superalloys nickel alloys mechanical testing design of experiments finite element analysis crystal microstructure high-temperature effects At the company Krupp VDM the nickel-based alloys alloy C263, alloy X...

... 2002 stators aerospace engines sliding friction damping mechanical contact mechanical testing parameter estimation modelling The present paper deals with a six-vanes segment of a low-pressure stage of an aircraft engine ( 1 ). As shown in Fig. 1 the vanes are grouped in segments...

... Headquarters Oct. 2000. Associate Editor: D. Wisler. 08 May 2000 01 Oct 1999 01 Oct 2000 life testing crack detection ceramics high-temperature effects fatigue cracks failure (mechanical) materials testing mechanical testing Advanced ceramics are candidate materials...

... modes localised modes wave propagation finite element analysis mechanical testing 08 May 2000 01 Oct 1999 01 Oct 2000 Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL...

... January 2000 ceramics mechanical testing gas turbines composite particles creep testing fatigue fatigue testing creep manufacturing processes costing During the past three years, Composite Optics, Inc. (COI) has developed oxide–oxide ceramic matrix composites (CMCs) for advanced...

... 20 October 1999 gas turbines superalloys nickel alloys machining plastic deformation thermal stresses metallurgy dimensions mechanical testing The dimensional instability phenomenon is basically a change in dimension with respect to time without doing any further work...

... compounds aluminium compounds yttrium compounds nickel compounds cobalt compounds Young's modulus mechanical testing thermal stresses The increase in gas turbine firing temperature has driven the need to provide blade protection. Actually, as increases in the firing temperatures were made...