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Proceedings Papers

A Theoretical and Numerical Development of the Concept of the Active Control Foil Bearing (ACFB)

M. J. Braun, F. K. Choy, M. Dzodzo, J. Hsu, R. Veillette, D. Deckler

Proc. ASME. GT1995, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V005T14A008, June 5–8, 1995

Paper No: 95-GT-172

DOI: https://doi.org/10.1115/95-GT-172

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Topics: Foil bearings, Feedback, Magnetic bearings, Stability, Bearings, Control equipment, Damage, Design, Dynamics (Mechanics), Equilibrium (Physics)

Proceedings Papers

Oil Debris Detection Using Static and Dynamic Capacitance Measurements

S. V. Murali, F. K. Choy, J. Zhe, J. Carletta, X. Xia

Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 241-243, October 20–22, 2008

Paper No: IJTC2008-71280

DOI: https://doi.org/10.1115/IJTC2008-71280

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Topics: Capacitance, Electrodes, Metals, Particulate matter, Wire, Capacitors, Microchannels, Nonferrous wire, Plates (structures)

Proceedings Papers

Oil Debris Detection Using Capacitance and Ultrasonic Measurements

J. Zhe, F. K. Choy, S. V. Murali, M. A. Sarangi, R. Wilfong

Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 113-115, October 22–24, 2007

Paper No: IJTC2007-44279

DOI: https://doi.org/10.1115/IJTC2007-44279

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Topics: Capacitance, Ultrasonic measurement, Particulate matter, Particle size, Ultrasonic waves

Proceedings Papers

Transient and Steady State Vibration Analysis of a Wavy Thrust Bearing

Hongmei Zhao, F. K. Choy, M. J. Braun

Proc. ASME. TRIB2004, ASME/STLE 2004 International Joint Tribology Conference, Parts A and B, 581-587, October 24–27, 2004

Paper No: TRIB2004-64144

DOI: https://doi.org/10.1115/TRIB2004-64144

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Topics: Stability, Steady state, Thrust bearings, Transients (Dynamics), Vibration, Vibration analysis

Proceedings Papers

Vibration Monitoring and Damage Quantification of Faulty Ball Bearings

F. K. Choy, J. Zhou, M. J. Braun, L. Wang

Proc. ASME. TRIB2004, ASME/STLE 2004 International Joint Tribology Conference, Parts A and B, 771-779, October 24–27, 2004

Paper No: TRIB2004-64142

DOI: https://doi.org/10.1115/TRIB2004-64142

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Topics: Ball bearings, Damage, Vibration, Bearings, Failure, Rolling bearings, Reliability, Frequency-domain analysis, Machinery, Poincaré maps

Proceedings Papers

Vibration Monitoring and Damage Quantification of Ball Bearings for Household Appliances

F. K. Choy, D. Konrad, E. Labus, R. Wu

Proc. ASME. WTC2005, World Tribology Congress III, Volume 2, 169-170, September 12–16, 2005

Paper No: WTC2005-64126

DOI: https://doi.org/10.1115/WTC2005-64126

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Topics: Ball bearings, Damage, Vibration, Bearings, Accelerometers, Manufacturing, Noise (Sound), Spectra (Spectroscopy), Testing

Journal Articles

Vibration Monitoring and Damage Quantification of Faulty Ball Bearings

F. K. Choy, J. Zhou, M. J. Braun, L. Wang

J. Tribol. October 2005, 127(4): 776–783.

DOI: https://doi.org/10.1115/1.2033899

Published Online: July 5, 2005

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Topics: Ball bearings, Bearings, Damage, Poincaré maps, Vibration, Rotors

Journal Articles

Transient and Steady State Vibration Analysis of a Wavy Thrust Bearing

H. Zhao, F. K. Choy, M. J. Braun

J. Tribol. January 2006, 128(1): 139–145.

DOI: https://doi.org/10.1115/1.2033900

Published Online: June 22, 2005

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Topics: Bearings, Stability, Steady state, Thrust bearings, Transients (Dynamics), Vibration, Stress

Journal Articles

Damage Identification of a Gear Transmission Using Vibration Signatures

F. K. Choy, Fellow, ASME, D. H. Mugler, J. Zhou

J. Mech. Des. June 2003, 125(2): 394–403.

DOI: https://doi.org/10.1115/1.1564571

Published Online: June 11, 2003

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Topics: Damage, Gears, Signals, Vibration, Wavelet transforms, Wavelets, Computer simulation, Gear teeth, Rotors

Journal Articles

Transient Pressure Analysis in Piping Networks due to Valve Closing and Outlet Pressure Pulsation

F. K. Choy, M. J. Braun, H. S. Wang

J. Pressure Vessel Technol. August 1996, 118(3): 315–325.

DOI: https://doi.org/10.1115/1.2842194

Published Online: August 1, 1996

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Topics: Pipes, Pressure, Transients (Dynamics), Valves, Fluid pressure, Manifolds, Algorithms, Computer simulation, Design, Fast Fourier transforms

Journal Articles

Transient Flow Patterns and Pressures Characteristics in a Hydrostatic Pocket

M. J. Braun, Y. M. Zhou, F. K. Choy

J. Tribol. January 1994, 116(1): 139–146.

DOI: https://doi.org/10.1115/1.2927030

Published Online: January 1, 1994

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Topics: Cavities, Errors, Finite difference methods, Flow (Dynamics), Geometry, Hydrostatics, Navier-Stokes equations, Reynolds number, Shear (Mechanics), Shear flow

Journal Articles

The Effects of a Hydrostatic Pocket Aspect Ratio, Supply Orifice Position, and Attack Angle on Steady-State Flow Patterns, Pressure, and Shear Characteristics

M. J. Braun, F. K. Choy, Y. M. Zhou

J. Tribol. October 1993, 115(4): 678–685.

DOI: https://doi.org/10.1115/1.2921693

Published Online: October 1, 1993

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Topics: Flow (Dynamics), Hydrostatics, Pressure, Shear (Mechanics), Steady state, Computer simulation, Errors, Finite difference methods, Navier-Stokes equations

Journal Articles

Coupling of Rotor-Gear-Casing Vibrations During Extreme Operating Events

F. K. Choy, J. Padovan, Y. F. Ruan

J. Pressure Vessel Technol. November 1992, 114(4): 464–471.

DOI: https://doi.org/10.1115/1.2929256

Published Online: November 1, 1992

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Topics: Gears, Rotors, Vibration, Bearings, Dynamics (Mechanics), Algorithms, Compressors, Earthquakes, Failure, Finite element model

Journal Articles

Modal Analysis of Multistage Gear Systems Coupled With Gearbox Vibrations

F. K. Choy, Y. F. Ruan, R. K. Tu, J. J. Zakrajsek, D. P. Townsend

J. Mech. Des. September 1992, 114(3): 486–497.

DOI: https://doi.org/10.1115/1.2926577

Published Online: September 1, 1992

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Topics: Gears, Mechanical drives, Modal analysis, Vibration, Rotors, Bearings, Dynamics (Mechanics), Transients (Dynamics), Finite element model, Steady state

Journal Articles

Nonlinear Transient and Frequency Response Analysis of a Hydrodynamic Journal Bearing

F. K. Choy, M. J. Braun, Y. Hu

J. Tribol. July 1992, 114(3): 448–454.

DOI: https://doi.org/10.1115/1.2920904

Published Online: July 1, 1992

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Topics: Frequency response, Journal bearings, Transients (Dynamics), Bearings, Engineering simulation, Fluid films, Simulation, Stiffness, Vibration

Journal Articles

Nonlinear Effects in a Plain Journal Bearing: Part 1—Analytical Study

F. K. Choy, M. J. Braun, Y. Hu

J. Tribol. July 1991, 113(3): 555–561.

DOI: https://doi.org/10.1115/1.2920659

Published Online: July 1, 1991

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Topics: Journal bearings, Bearings, Pressure, Equilibrium (Physics), Fluid films, Lubricants, Stiffness, Stress, Approximation, Computer simulation

Journal Articles

Closure to “Discussion of ‘Nonlinear Effects in a Plain Journal Bearing: Part 1—Analytical Study’” (1991, ASME J. Tribol., 113, p. 561)

F. K. Choy, M. J. Braun, Y. Hu

J. Tribol. July 1991, 113(3): 562.

DOI: https://doi.org/10.1115/1.2926625

Published Online: July 1, 1991

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Topics: Journal bearings

Journal Articles

Closure to “Discussion of ‘Nonlinear Effects in a Plain Journal Bearing: Part 2—Results’” (1991, ASME J. Tribol., 113, p. 570)

M. J. Braun, F. K. Choy, Y. Hu

J. Tribol. July 1991, 113(3): 570.

DOI: https://doi.org/10.1115/1.2926627

Published Online: July 1, 1991

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Topics: Journal bearings

Journal Articles

Nonlinear Effects in a Plain Journal Bearing: Part 2—Results

M. J. Braun, F. K. Choy, Y. Hu

J. Tribol. July 1991, 113(3): 563–570.

DOI: https://doi.org/10.1115/1.2920660

Published Online: July 1, 1991

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Topics: Journal bearings, Bearings, Computer simulation, Fluids, Lubricants, Pressure, Rotordynamics, Stress, Temperature

Journal Articles

Effects of Gear Box Vibration and Mass Imbalance on the Dynamics of Multistage Gear Transmission

F. K. Choy, Y. K. Tu, J. J. Zakrajsek, D. P. Townsend

J. Vib. Acoust. July 1991, 113(3): 333–344.

DOI: https://doi.org/10.1115/1.2930190

Published Online: July 1, 1991

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Topics: Dynamics (Mechanics), Gears, Vibration, Bearings, Rotors, System dynamics, Degrees of freedom, Excitation, Excitation functions, Mode shapes

Journal citation

NARROW

A Theoretical and Numerical Development of the Concept of the Active Control Foil Bearing (ACFB)

Oil Debris Detection Using Static and Dynamic Capacitance Measurements

Oil Debris Detection Using Capacitance and Ultrasonic Measurements

Transient and Steady State Vibration Analysis of a Wavy Thrust Bearing

Vibration Monitoring and Damage Quantification of Faulty Ball Bearings

Vibration Monitoring and Damage Quantification of Ball Bearings for Household Appliances

Vibration Monitoring and Damage Quantification of Faulty Ball Bearings

Transient and Steady State Vibration Analysis of a Wavy Thrust Bearing

Damage Identification of a Gear Transmission Using Vibration Signatures

Transient Pressure Analysis in Piping Networks due to Valve Closing and Outlet Pressure Pulsation

Transient Flow Patterns and Pressures Characteristics in a Hydrostatic Pocket

The Effects of a Hydrostatic Pocket Aspect Ratio, Supply Orifice Position, and Attack Angle on Steady-State Flow Patterns, Pressure, and Shear Characteristics

Coupling of Rotor-Gear-Casing Vibrations During Extreme Operating Events

Modal Analysis of Multistage Gear Systems Coupled With Gearbox Vibrations

Nonlinear Transient and Frequency Response Analysis of a Hydrodynamic Journal Bearing

Nonlinear Effects in a Plain Journal Bearing: Part 1—Analytical Study

Closure to “Discussion of ‘Nonlinear Effects in a Plain Journal Bearing: Part 1—Analytical Study’” (1991, ASME J. Tribol., 113, p. 561)

Closure to “Discussion of ‘Nonlinear Effects in a Plain Journal Bearing: Part 2—Results’” (1991, ASME J. Tribol., 113, p. 570)

Nonlinear Effects in a Plain Journal Bearing: Part 2—Results

Effects of Gear Box Vibration and Mass Imbalance on the Dynamics of Multistage Gear Transmission

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