... the engine model parameters is independently verified by successful estimation of parameters by nonlinear least-squares estimation. 22 12 2009 26 03 2010 24 08 2010 24 08 2010 fault diagnosis jet engines least squares approximations parameter estimation wavelet transforms...

... 2009 23 05 2009 26 04 2010 26 04 2010 fuel systems ignition intake systems (machines) manifolds parameter estimation petroleum thermal analysis valves Over 80% of the total CO and HC emissions in standard driving cycles are generated during the cold phase when cars...

... identification of parameters is limited to the range 40–75 Hz. damping machine bearings parameter estimation rotors Squeeze film dampers provide structural isolation, reduce imbalance response amplitude levels in rotating machinery, and in some instances, increase rotor speed stability...

... wire mesh damper materials for stiffness and damping was conducted by Ertas et al. ( 5 ). damping elastic constants Hilbert transforms parameter estimation shock absorbers vibrations 2008 American Society of Mechanical Engineers ...

.... The experiment is carefully repeated, taking into consideration stick-slip phenomena at the boundaries of the beam at low loading ( < 400 N ) . It means that values below 400 N will be disregarded. 13 06 2006 01 08 2006 magnetic forces magnetic bearings parameter...

... 2005 28 09 2005 gas turbines engines compressors parameter estimation shafts bar charts sensitivity analysis Thermodynamic models and computer software for gas turbine performance analysis have been available for a long time. When all engine internal design-point component...

... estimation errors averaged over 30 simulations where each simulation had a linear-plus-exponential degradation of all eight health parameters. The numbers show the error between the estimated and actual degradation as percentages of the degradation at the final time. Health parameter Estimation error...

... and M = [ C 2 / σ f j 2 ] is the matrix of a priori expected values for health-parameter estimation errors. The particular aspects of linear and nonlinear diagnostic methods are now going to be examined using as test case an engine representative of a contemporary...

... 01 Mar 2002 11 08 2004 rotors modal analysis parameter estimation calibration vibration measurement Balancing of flexible rotors has acquired the attention of many researchers since the days of Thearle 1 . The main balancing techniques are the influence coefficient method...

..., Amsterdam, The Netherlands, June 3–6, 2002; Paper No. 2002-GT-30420. Manuscript received by IGTI, Dec. 2001, final revision, Mar. 2002. Associate Editor: E. Benvenuti. 03 June 2002 01 Dec 2001 01 Mar 2002 07 06 2004 turbogenerators vibration measurement parameter estimation...

... superalloys nickel stress effects slip crystallographic shear parameter estimation X-ray crystallography crystal structure 03 June 2002 01 Dec 2001 01 Mar 2002 07 06 2004 Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL...

.... 190 – 200 . 01 10 2002 01 03 2003 machine bearings rotors transient response damping parameter estimation supports Experimental identification of fluid film bearing parameters is essential for adequate interpretation of rotating machinery performance and necessary...

..., Flexure-Pivot Hybrid Bearing for Cryogenic Applications ,” ASME J. Tribol. 0742-4787 , 118 , pp. 190 – 200 . machine bearings rotors supports dynamic response hydrodynamics damping parameter estimation The design of turbomachinery relies on the accurate prediction of rotor...

... . Manuscript received by the S&D Division Nov. 2000; final revision received by the ASME Headquarters May 2002. Associate Editor: M. Mignolet. 01 Nov 2000 01 May 2002 27 12 2002 vibrations modal analysis parameter estimation gas turbines rotors bending numerical analysis...

.... Manuscript received by IGTI, Dec. 2000, final revision, Mar. 2001. Associate Editor: R. Natole. 04 June 2001 01 Dec 2000 01 Mar 2001 24 09 2002 stators aerospace engines sliding friction damping mechanical contact mechanical testing parameter estimation modelling...

... engines testing combustion emission pressure imaging parameter estimation Heavy-duty turbocharged aftercooled (HDTCA) engines met EURO III emission regulations in 1999 incorporating the following technologies ( 1 2 3 ): • Four valve cylinder head. This layout allows for centered...

... modelling parameter estimation probability perturbation theory The high sensitivity of both the free and forced responses of bladed disks to mistuning, i.e., to the existence of small blade-to-blade differences in their structural properties that arise for example during the manufacturing process...

... of close blade alone natural frequencies. 2 Probability density function of the amplitude of the highest responding blade. Original parameters, estimated by ML and RMS approaches, single-degree-of-freedom blade model excited at the tuned natural frequency corresponding to the ninth engine order...

... function of the maximum amplitude of response of the mass m 2 . Original parameters, estimated by ML and RMS approaches, two-degree-of-freedom blade model 1 excited in a ninth engine order excitation in a frequency sweep around the corresponding lowest tuned frequency, ω ∈ ⌊ 0.95 ω...