1-20 of 37
Patrick S. Keogh
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles

Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

Open Access
Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061006.
Paper No: GTP-24-1607
https://doi.org/10.1115/1.4066711
Published Online: November 22, 2024
View Articletitled, Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry
Open the PDF for Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry in another window
Topics: Damping, Excitation, Leakage, Pressure, Stiffness, Rotors, Pressure drop, Test facilities, Geometry
Proceedings Papers

Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

Available to Purchase

Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT26A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128839
https://doi.org/10.1115/GT2024-128839
View Paper titled, Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry
Open the PDF for Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry in another window
Topics: Damping, Geometry, Rotordynamics, Stiffness
Journal Articles

Dynamic Characterization of an Adaptive Film-Riding Seal

Available to Purchase
Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2024, 146(1): 011017.
Paper No: GTP-23-1368
https://doi.org/10.1115/1.4063549
Published Online: November 21, 2023
View Articletitled, Dynamic Characterization of an Adaptive Film-Riding Seal
Open the PDF for Dynamic Characterization of an Adaptive Film-Riding Seal in another window
Topics: Clearances (Engineering), Computer simulation, Damping, Fluid films, Pressure, Rotors, Stiffness, Modeling, Displacement, Pressure drop
Journal Articles

Investigation of Fault Modeling in the Identification of Bearing Wear Severity

Available to Purchase
Diogo Stuani Alves, Tiago Henrique Machado, Felipe Wenzel da Silva Tuckmantel, Patrick S. Keogh, Katia Lucchesi Cavalca
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071802.
Paper No: TRIB-21-1318
https://doi.org/10.1115/1.4053178
Published Online: December 22, 2021
View Articletitled, Investigation of Fault Modeling in the Identification of Bearing Wear Severity
Open the PDF for Investigation of Fault Modeling in the Identification of Bearing Wear Severity in another window
Topics: Bearings, Wear, Modeling, Rotors
Proceedings Papers

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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90991
https://doi.org/10.1115/GT2019-90991
View Paper titled, On the Development of a Pressure Actuated Leaf Seal for Turbomachinery Applications
Open the PDF for On the Development of a Pressure Actuated Leaf Seal for Turbomachinery Applications in another window
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

Available to Purchase

Chris Lusty, Nicola Y. Bailey, Patrick S. Keogh
Proc. ASME. IMECE2017, Volume 4A: Dynamics, Vibration, and Control, V04AT05A019, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-71350
https://doi.org/10.1115/IMECE2017-71350
View Paper titled, A Comparison of the Capacity for Precise Motion Control Between Hinged Joints and Flexure Joints
Open the PDF for A Comparison of the Capacity for Precise Motion Control Between Hinged Joints and Flexure Joints in another window
Topics: Bending (Stress), Motion control, Displacement, Design, Hinges, Machine design, Machinery, Micromechanical devices, Modeling, Reliability
Proceedings Papers

Large Deformation of Flexure Couplings for Robotic Arm Joints

Available to Purchase

Nicola Y. Bailey, Chris Lusty, Patrick S. Keogh
Proc. ASME. IMECE2017, Volume 4B: Dynamics, Vibration, and Control, V04BT05A016, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-71353
https://doi.org/10.1115/IMECE2017-71353
View Paper titled, Large Deformation of Flexure Couplings for Robotic Arm Joints
Open the PDF for Large Deformation of Flexure Couplings for Robotic Arm Joints in another window
Topics: Bending (Stress), Couplings, Deformation, Robotics, Bearings, Hinges, Machinery, Trajectories (Physics), Transmission parts
Proceedings Papers

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

Available to Purchase

Patrick S. Keogh, Chris Lusty, Nicola Y. Bailey
Proc. ASME. IMECE2017, Volume 4B: Dynamics, Vibration, and Control, V04BT05A012, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-71865
https://doi.org/10.1115/IMECE2017-71865
View Paper titled, Nonlinear Dynamics and Control of Rotors Operating Within the Clearance Gaps of Magnetic Bearing Systems
Open the PDF for Nonlinear Dynamics and Control of Rotors Operating Within the Clearance Gaps of Magnetic Bearing Systems in another window
Topics: Clearances (Engineering), Magnetic bearings, Nonlinear dynamics, Rotors, Bearings, Levitation, Stators, Contact dynamics, Control systems, Dynamics (Mechanics)
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)

Available to Purchase
Patrick S. Keogh
Journal: Applied Mechanics Reviews
Publisher: ASME
Article Type: Discussions
Appl. Mech. Rev. November 2017, 69(6): 065501.
Paper No: AMR-17-1028
https://doi.org/10.1115/1.4037217
Published Online: October 20, 2017
View Articletitled, 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)
Open the PDF for 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) in another window
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

Available to Purchase

Muhao Wang, M. Necip Sahinkaya, Patrick S. Keogh
Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A020, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95498
https://doi.org/10.1115/GT2013-95498
View Paper titled, Switching Action in Rotor-AMB Systems for Smooth Vibration Control
Open the PDF for Switching Action in Rotor-AMB Systems for Smooth Vibration Control in another window
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

Available to Purchase

Fawaz Y. Saket, M. Necip Sahinkaya, Patrick S. Keogh
Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT29A021, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95510
https://doi.org/10.1115/GT2013-95510
View Paper titled, Touchdown Bearing Contact Forces in Magnetic Bearing Systems
Open the PDF for Touchdown Bearing Contact Forces in Magnetic Bearing Systems in another window
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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-70641
https://doi.org/10.1115/DETC2012-70641
View Paper titled, Active Recovery of Contact-Free Levitation in Magnetic Bearing Systems
Open the PDF for Active Recovery of Contact-Free Levitation in Magnetic Bearing Systems in another window
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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23028
https://doi.org/10.1115/GT2010-23028
View Paper titled, Destabilization of Forward Rub in Rotor Magnetic Bearing Systems Using Actively Controlled Auxiliary Bearings
Open the PDF for Destabilization of Forward Rub in Rotor Magnetic Bearing Systems Using Actively Controlled Auxiliary Bearings in another window
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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23482
https://doi.org/10.1115/GT2010-23482
View Paper titled, Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery
Open the PDF for Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery in another window
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

Available to Purchase
M. Necip Sahinkaya, Abdul-Hadi G. Abulrub, Patrick S. Keogh, Clifford R. Burrows
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. February 2011, 133(2): 022503.
https://doi.org/10.1115/1.4002016
Published Online: October 28, 2010
View Articletitled, Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery
Open the PDF for Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery in another window
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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2009-2559
https://doi.org/10.1115/DSCC2009-2559
View Paper titled, Accurate Decoupled Linear Modeling for Robust H ∞ Control of Multi Axis Shaking Tables
Open the PDF for Accurate Decoupled Linear Modeling for Robust H ∞ Control of Multi Axis Shaking Tables in another window
Topics: Modeling, Control equipment, Design, Dynamic analysis, Errors, Parameter estimation, Servomechanisms, Simulation, Uncertainty
Journal Articles

A Multiobjective Adaptive Controller for Magnetic Bearing Systems

Available to Purchase
M. Necip Sahinkaya, Abdul-Hadi G. Abulrub, Clifford R. Burrows, Patrick S. Keogh
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. December 2010, 132(12): 122503.
https://doi.org/10.1115/1.4001060
Published Online: August 27, 2010
View Articletitled, A Multiobjective Adaptive Controller for Magnetic Bearing Systems
Open the PDF for A Multiobjective Adaptive Controller for Magnetic Bearing Systems in another window
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

Available to Purchase
Iain S. Cade, M. Necip Sahinkaya, Clifford R. Burrows, Patrick S. Keogh
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2010, 132(5): 052502.
https://doi.org/10.1115/1.3204644
Published Online: March 3, 2010
View Articletitled, An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems
Open the PDF for An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems in another window
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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59659
https://doi.org/10.1115/GT2009-59659
View Paper titled, An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems
Open the PDF for An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems in another window
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

Available to Purchase

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
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-60335
https://doi.org/10.1115/GT2009-60335
View Paper titled, A Multi-Objective Adaptive Controller for Magnetic Bearing Systems
Open the PDF for A Multi-Objective Adaptive Controller for Magnetic Bearing Systems in another window
Topics: Control equipment, Magnetic bearings, Rotors, Rotor vibration, Bearings, Displacement, Eddies (Fluid dynamics), Eddy currents (Electricity), Pareto optimization, Stability