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Journal Articles

Investigation of Fault Modeling in the Identification of Bearing Wear Severity

Diogo Stuani Alves, Tiago Henrique Machado, Felipe Wenzel da Silva Tuckmantel, Patrick S. Keogh, Katia Lucchesi Cavalca

J. Tribol. July 2022, 144(7): 071802.

Paper No: TRIB-21-1318

DOI: https://doi.org/10.1115/1.4053178

Published Online: December 22, 2021

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Topics: Bearings, Wear, Modeling, Rotors

Proceedings Papers

On the Development of a Pressure Actuated Leaf Seal for Turbomachinery Applications

Ernesto Pedraza-Valle, Georgios Papageorgiou, Aaron Bowsher, Peter F. Crudgington, Carl M. Sangan, Patrick S. Keogh, James A. Scobie

Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT15A009, June 17–21, 2019

Paper No: GT2019-90991

DOI: https://doi.org/10.1115/GT2019-90991

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Topics: Pressure, Turbomachinery, Leakage, Clearances (Engineering), Pressure drop, Rotors, Design, Displacement, Eddies (Fluid dynamics), Eddy currents (Electricity)

Proceedings Papers

A Comparison of the Capacity for Precise Motion Control Between Hinged Joints and Flexure Joints

Chris Lusty, Nicola Y. Bailey, Patrick S. Keogh

Proc. ASME. IMECE2017, Volume 4A: Dynamics, Vibration, and Control, V04AT05A019, November 3–9, 2017

Paper No: IMECE2017-71350

DOI: https://doi.org/10.1115/IMECE2017-71350

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Topics: Bending (Stress), Motion control, Displacement, Design, Hinges, Machine design, Machinery, Micromechanical devices, Modeling, Reliability

Proceedings Papers

Nonlinear Dynamics and Control of Rotors Operating Within the Clearance Gaps of Magnetic Bearing Systems

Patrick S. Keogh, Chris Lusty, Nicola Y. Bailey

Proc. ASME. IMECE2017, Volume 4B: Dynamics, Vibration, and Control, V04BT05A012, November 3–9, 2017

Paper No: IMECE2017-71865

DOI: https://doi.org/10.1115/IMECE2017-71865

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Topics: Clearances (Engineering), Magnetic bearings, Nonlinear dynamics, Rotors, Bearings, Levitation, Stators, Contact dynamics, Control systems, Dynamics (Mechanics)

Proceedings Papers

Large Deformation of Flexure Couplings for Robotic Arm Joints

Nicola Y. Bailey, Chris Lusty, Patrick S. Keogh

Proc. ASME. IMECE2017, Volume 4B: Dynamics, Vibration, and Control, V04BT05A016, November 3–9, 2017

Paper No: IMECE2017-71353

DOI: https://doi.org/10.1115/IMECE2017-71353

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Topics: Bending (Stress), Couplings, Deformation, Robotics, Bearings, Hinges, Machinery, Trajectories (Physics), Transmission parts

Journal Articles

Discussion of “A Review of the Rotordynamic Thermally Induced Synchronous Instability (Morton) Effect” (Tong, X., Palazzolo, A., and Suh, J., 2017, ASME Appl. Mech. Rev., 69(6), p. 060801)

Patrick S. Keogh

Appl. Mech. Rev. November 2017, 69(6): 065501.

Paper No: AMR-17-1028

DOI: https://doi.org/10.1115/1.4037217

Published Online: October 20, 2017

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Topics: Bearings, Design, Dynamics (Mechanics), Heating, Rotors, Vibration, Convection, Heat transfer, Heat, Machinery

Proceedings Papers

Switching Action in Rotor-AMB Systems for Smooth Vibration Control

Muhao Wang, M. Necip Sahinkaya, Patrick S. Keogh

Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A020, June 3–7, 2013

Paper No: GT2013-95498

DOI: https://doi.org/10.1115/GT2013-95498

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Topics: Rotors, Vibration control, Control equipment, Signals, Transients (Dynamics), Vibration, Levitation, Machinery, Magnetic bearings, Rotor vibration

Proceedings Papers

Touchdown Bearing Contact Forces in Magnetic Bearing Systems

Fawaz Y. Saket, M. Necip Sahinkaya, Patrick S. Keogh

Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A021, June 3–7, 2013

Paper No: GT2013-95510

DOI: https://doi.org/10.1115/GT2013-95510

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Topics: Bearings, Magnetic bearings, Contact dynamics, Levitation, Rotors, Stress, Transients (Dynamics), Design, Force measurement, Machinery

Proceedings Papers

Active Recovery of Contact-Free Levitation in Magnetic Bearing Systems

Peichao Li, M. Necip Sahinkaya, Patrick S. Keogh

Proc. ASME. IDETC-CIE2012, Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 673-680, August 12–15, 2012

Paper No: DETC2012-70641

DOI: https://doi.org/10.1115/DETC2012-70641

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Topics: Levitation, Magnetic bearings, Bearings, Rotors, Damping, Dynamic systems, Failure, Friction, Gas bearings, Manufacturing

Proceedings Papers

Destabilization of Forward Rub in Rotor Magnetic Bearing Systems Using Actively Controlled Auxiliary Bearings

Iain S. Cade, M. Necip Sahinkaya, Clifford R. Burrows, Patrick S. Keogh

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 273-282, June 14–18, 2010

Paper No: GT2010-23028

DOI: https://doi.org/10.1115/GT2010-23028

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Topics: Bearings, Magnetic bearings, Rotors, Design, Levitation, Safety, Stators

Proceedings Papers

Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery

M. Necip Sahinkaya, Abdul-Hadi G. Abulrub, Patrick S. Keogh, Clifford R. Burrows

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 399-408, June 14–18, 2010

Paper No: GT2010-23482

DOI: https://doi.org/10.1115/GT2010-23482

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Topics: Control equipment, Machinery, Transients (Dynamics), Rotors, Bearings, Actuators, Adaptive control, Magnetic bearings, Rotor vibration

Journal Articles

Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery

M. Necip Sahinkaya, Abdul-Hadi G. Abulrub, Patrick S. Keogh, Clifford R. Burrows

J. Eng. Gas Turbines Power. February 2011, 133(2): 022503.

DOI: https://doi.org/10.1115/1.4002016

Published Online: October 28, 2010

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Topics: Control equipment, Magnetic bearings, Rotors, Transients (Dynamics), Bearings, Adaptive control, Machinery, Vibration

Proceedings Papers

Accurate Decoupled Linear Modeling for Robust H ∞ Control of Multi Axis Shaking Tables

Ali Ghorashi, Andrew R. Plummer, Kevin A. Edge, Patrick S. Keogh

Proc. ASME. DSCC2009, ASME 2009 Dynamic Systems and Control Conference, Volume 2, 643-650, October 12–14, 2009

Paper No: DSCC2009-2559

DOI: https://doi.org/10.1115/DSCC2009-2559

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Topics: Modeling, Control equipment, Design, Dynamic analysis, Errors, Parameter estimation, Servomechanisms, Simulation, Uncertainty

Journal Articles

A Multiobjective Adaptive Controller for Magnetic Bearing Systems

M. Necip Sahinkaya, Abdul-Hadi G. Abulrub, Clifford R. Burrows, Patrick S. Keogh

J. Eng. Gas Turbines Power. December 2010, 132(12): 122503.

DOI: https://doi.org/10.1115/1.4001060

Published Online: August 27, 2010

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Topics: Control equipment, Magnetic bearings, Rotors, Bearings, Weight (Mass), Vibration, Rotor vibration

Journal Articles

An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems

Iain S. Cade, M. Necip Sahinkaya, Clifford R. Burrows, Patrick S. Keogh

J. Eng. Gas Turbines Power. May 2010, 132(5): 052502.

DOI: https://doi.org/10.1115/1.3204644

Published Online: March 3, 2010

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Topics: Bearings, Magnetic bearings, Rotors, Control equipment

Proceedings Papers

An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems

Iain S. Cade, M. Necip Sahinkaya, Clifford R. Burrows, Patrick S. Keogh

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 855-865, June 8–12, 2009

Paper No: GT2009-59659

DOI: https://doi.org/10.1115/GT2009-59659

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Topics: Bearings, Magnetic bearings, Rotors, Control equipment, Degrees of freedom, Dynamic response, Stators, Thermal stresses

Proceedings Papers

A Multi-Objective Adaptive Controller for Magnetic Bearing Systems

M. Necip Sahinkaya, Abdul-Hadi G. Abulrub, Clifford R. Burrows, Patrick S. Keogh

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 1063-1071, June 8–12, 2009

Paper No: GT2009-60335

DOI: https://doi.org/10.1115/GT2009-60335

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Topics: Control equipment, Magnetic bearings, Rotors, Rotor vibration, Bearings, Displacement, Eddies (Fluid dynamics), Eddy currents (Electricity), Pareto optimization, Stability

Proceedings Papers

Dynamic Simulation Model of a Hydraulic Valve Utilizing the Ho¨rbiger Plate Principle and Piezoactuation to Achieve High Bandwidth and Flow Performance

David T. Branson, Fengcai Wang, Chris R. Bowen, Patrick S. Keogh

Proc. ASME. IMECE2008, Volume 5: Design, Analysis, Control and Diagnosis of Fluid Power Systems, 125-132, October 31–November 6, 2008

Paper No: IMECE2008-67401

DOI: https://doi.org/10.1115/IMECE2008-67401

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Topics: Flow (Dynamics), Simulation models, Valves, Engineering simulation, Fluids, Pressure drop, Simulation, Computational fluid dynamics, Dynamic response, Machinery

Proceedings Papers

On the Use of Actively Controlled Auxiliary Bearings in Magnetic Bearing Systems

Iain S. Cade, M. Necip Sahinkaya, Clifford R. Burrows, Patrick S. Keogh

Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 1137-1147, June 9–13, 2008

Paper No: GT2008-50831

DOI: https://doi.org/10.1115/GT2008-50831

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Topics: Bearings, Magnetic bearings, Rotors, Control equipment, Design, Displacement, Errors, Heating, Optimization, Signals

Proceedings Papers

Modeling for a High-Bandwidth High-Flow Valve Design Based on Ho¨rbiger Plate Operation

David T. Branson, Fengcai Wang, D. Nigel Johnston, Derek G. Tilley, Chris R. Bowen, Patrick S. Keogh

Proc. ASME. FEDSM2008, Volume 1: Symposia, Parts A and B, 967-972, August 10–14, 2008

Paper No: FEDSM2008-55230

DOI: https://doi.org/10.1115/FEDSM2008-55230

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Topics: Design, Flow (Dynamics), Modeling, Valves, Simulation, Engineering simulation, Construction, Dynamic response, Piezoelectric actuators, Separation (Technology)

Journal citation

NARROW

Investigation of Fault Modeling in the Identification of Bearing Wear Severity

On the Development of a Pressure Actuated Leaf Seal for Turbomachinery Applications

A Comparison of the Capacity for Precise Motion Control Between Hinged Joints and Flexure Joints

Nonlinear Dynamics and Control of Rotors Operating Within the Clearance Gaps of Magnetic Bearing Systems

Large Deformation of Flexure Couplings for Robotic Arm Joints

Discussion of “A Review of the Rotordynamic Thermally Induced Synchronous Instability (Morton) Effect” (Tong, X., Palazzolo, A., and Suh, J., 2017, ASME Appl. Mech. Rev., 69(6), p. 060801)

Switching Action in Rotor-AMB Systems for Smooth Vibration Control

Touchdown Bearing Contact Forces in Magnetic Bearing Systems

Active Recovery of Contact-Free Levitation in Magnetic Bearing Systems

Destabilization of Forward Rub in Rotor Magnetic Bearing Systems Using Actively Controlled Auxiliary Bearings

Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery

Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery

Accurate Decoupled Linear Modeling for Robust H ∞ Control of Multi Axis Shaking Tables

A Multiobjective Adaptive Controller for Magnetic Bearing Systems

An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems

An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems

A Multi-Objective Adaptive Controller for Magnetic Bearing Systems

Dynamic Simulation Model of a Hydraulic Valve Utilizing the Ho¨rbiger Plate Principle and Piezoactuation to Achieve High Bandwidth and Flow Performance

On the Use of Actively Controlled Auxiliary Bearings in Magnetic Bearing Systems

Modeling for a High-Bandwidth High-Flow Valve Design Based on Ho¨rbiger Plate Operation

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