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R. S. Dwyer-Joyce
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Journal Articles

Ultrasonic Measurement for Film Thickness and Solid Contact in Elastohydrodynamic Lubrication

R. S. Dwyer-Joyce, T. Reddyhoff, J. Zhu
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031501.
https://doi.org/10.1115/1.4004105
Published Online: June 17, 2011
View Article titled, Ultrasonic Measurement for Film Thickness and Solid Contact in Elastohydrodynamic Lubrication
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Topics: Film thickness, Lubricants, Stiffness, Stress, Surface roughness, Lubrication, Pressure
Proceedings Papers

Ultrasonic Measurement for Film Thickness and Solid Contact in Elastohydrodynamic Lubrication

R. S. Dwyer-Joyce, J. Zhu, T. Reddyhoff
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 111-113, October 17–20, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2010-41080
https://doi.org/10.1115/IJTC2010-41080
View Paper titled, Ultrasonic Measurement for Film Thickness and Solid Contact in Elastohydrodynamic Lubrication
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Topics: Elastohydrodynamic lubrication, Film thickness, Ultrasonic measurement, Stiffness, Lubrication, Reflection, Disks, Kinematics, Lubricants, Steel
Journal Articles

Feasibility Study for Real Time Measurement of Wheel-Rail Contact Using an Ultrasonic Array

R. S. Dwyer-Joyce, C. Yao, J. Zhang, R. Lewis, B. W. Drinkwater
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2009, 131(4): 041401.
https://doi.org/10.1115/1.3176992
Published Online: September 21, 2009
View Article titled, Feasibility Study for Real Time Measurement of Wheel-Rail Contact Using an Ultrasonic Array
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Topics: Rails, Reflection, Transducers, Wheels, Stress, Pressure
Proceedings Papers

Feasibility Study for an Ultrasonic Sensor for Monitoring Wheel Flange Contact

R. Lewis, R. S. Dwyer-Joyce, C. Yao
Proc. ASME. JRC2008, IEEE/ASME/ASCE 2008 Joint Rail Conference, 119-124, April 22–24, 2008
Publisher: American Society of Mechanical Engineers
Paper No: JRC2008-63031
https://doi.org/10.1115/JRC2008-63031
View Paper titled, Feasibility Study for an Ultrasonic Sensor for Monitoring Wheel Flange Contact
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Topics: Flanges, Ultrasonic transducers, Wheels, Signals, Rails, Sensors, Stress, Computer software, Condition monitoring, Dynamics (Mechanics)
Proceedings Papers

A Rail Mounted Ultrasonic Sensor for Contact Patch Measurement

R. S. Dwyer-Joyce, R. Lewis, B. W. Drinkwater, J. Zhang, C. Yao
Proc. ASME. JRC2008, IEEE/ASME/ASCE 2008 Joint Rail Conference, 125-130, April 22–24, 2008
Publisher: American Society of Mechanical Engineers
Paper No: JRC2008-63032
https://doi.org/10.1115/JRC2008-63032
View Paper titled, A Rail Mounted Ultrasonic Sensor for Contact Patch Measurement
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Topics: Rails, Ultrasonic transducers, Transducers, Wheels, Stress, Reflection, Waves, Contact modeling, Failure, Fatigue
Proceedings Papers

A Comparison of Three Methods for the Measurement of Wheel Rail Contact

R. S. Dwyer-Joyce, C. Yao, R. Lewis
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 541-543, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71077
https://doi.org/10.1115/IJTC2008-71077
View Paper titled, A Comparison of Three Methods for the Measurement of Wheel Rail Contact
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Topics: Rails, Wheels, Transducers, Pressure, Reflection, Trains, Ultrasonic waves, Ultrasound
Proceedings Papers

Instrumentation of a Rolling Bearing With a Thin Film Piezo Coating for Oil Film Measurement

R. S. Dwyer-Joyce, J. Zhang, B. W. Drinkwater, J. Elgoyen, K. J. Kirk
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 383-385, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44228
https://doi.org/10.1115/IJTC2007-44228
View Paper titled, Instrumentation of a Rolling Bearing With a Thin Film Piezo Coating for Oil Film Measurement
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Topics: Coating processes, Coatings, Instrumentation, Rolling bearings, Thin films, Sensors, Bearings, Film thickness, Aluminum, Ball bearings
Proceedings Papers

Contact Stress, Frictional Torque and Lubrication in Articulating Pin Joints

R. S. Dwyer-Joyce, A. Beke
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 443-445, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44230
https://doi.org/10.1115/IJTC2007-44230
View Paper titled, Contact Stress, Frictional Torque and Lubrication in Articulating Pin Joints
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Topics: Lubrication, Stress, Torque, Machinery, Cycles, Stress concentration, Aircraft, Displacement, Friction, Gears
Journal Articles

Asperity Creep Measured by the Reflection of Ultrasound at Rough Surface Contact

M. Gonzalez-Valadez, R. S. Dwyer-Joyce
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021410.
https://doi.org/10.1115/1.3089217
Published Online: March 9, 2009
View Article titled, Asperity Creep Measured by the Reflection of Ultrasound at Rough Surface Contact
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Topics: Creep, Reflection, Stiffness, Stress, Surface roughness, Ultrasound, Steel, Aluminum, Deformation
Proceedings Papers

Shear and Normal Stiffness of Mixed Liquid-Solid Contacts

R. S. Dwyer-Joyce, M. Gonzalez Valadez
Proc. ASME. WTC2005, World Tribology Congress III, Volume 1, 349-350, September 12–16, 2005
Publisher: American Society of Mechanical Engineers
Paper No: WTC2005-63793
https://doi.org/10.1115/WTC2005-63793
View Paper titled, Shear and Normal Stiffness of Mixed Liquid-Solid Contacts
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Topics: Shear (Mechanics), Stiffness, Ultrasound, Reflection, Surface roughness, Film thickness, Longitudinal waves, Lubrication, Shear waves, Wave amplitude
Proceedings Papers

Ultrasonic Phase and Amplitude and the Measurement of Oil Film Thickness

R. S. Dwyer-Joyce, T. Reddyhoff, B. Drinkwater
Proc. ASME. WTC2005, World Tribology Congress III, Volume 1, 515-516, September 12–16, 2005
Publisher: American Society of Mechanical Engineers
Paper No: WTC2005-63789
https://doi.org/10.1115/WTC2005-63789
View Paper titled, Ultrasonic Phase and Amplitude and the Measurement of Oil Film Thickness
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Topics: Film thickness, Reflection, Ultrasound, Bearings, Flat plates, Journal bearings, Reflectance, Thick films, Wave amplitude
Proceedings Papers

Ultrasonic Measurement of Wheel Hub/Axle Interference Fit Pressures

M. B. Marshall, R. Lewis, R. S. Dwyer-Joyce, F. Demilly, Y. Flament
Proc. ASME. WTC2005, World Tribology Congress III, Volume 2, 239-240, September 12–16, 2005
Publisher: American Society of Mechanical Engineers
Paper No: WTC2005-63454
https://doi.org/10.1115/WTC2005-63454
View Paper titled, Ultrasonic Measurement of Wheel Hub/Axle Interference Fit Pressures
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Topics: Press fits, Ultrasonic measurement, Wheels, Dimensions, Geometry, Joining, Manufacturing, Torque
Proceedings Papers

Ultrasound as a Tool to Measure the Wear of Human Tooth Enamel

R. S. Dwyer-Joyce, R. Lewis, M. Goodman
Proc. ASME. WTC2005, World Tribology Congress III, Volume 2, 645-646, September 12–16, 2005
Publisher: American Society of Mechanical Engineers
Paper No: WTC2005-63499
https://doi.org/10.1115/WTC2005-63499
View Paper titled, Ultrasound as a Tool to Measure the Wear of Human Tooth Enamel
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Topics: Enameling, Human teeth, Ultrasound, Wear, Flight, Probes, Resonance, Transducers
Proceedings Papers

The Application of Ultrasound as a Tool for Studying Contact Stresses in Railway Engineering Component Contacts

M. B. Marshall, R. Lewis, R. S. Dwyer-Joyce
Proc. ASME. RTD2005, Joint Rail, 83-88, March 16–18, 2005
Publisher: American Society of Mechanical Engineers
Paper No: RTD2005-70039
https://doi.org/10.1115/RTD2005-70039
View Paper titled, The Application of Ultrasound as a Tool for Studying Contact Stresses in Railway Engineering Component Contacts
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Topics: Railroad engineering, Stress, Ultrasonic applications, Wheels, Rails, Reflection, Waves, Acoustics, Calibration, Corners (Structural elements)
Proceedings Papers

A Design Tool for Railway Wheels Incorporating Damage Models and Dynamic Simulations

R. Lewis, S. Bruni, A. Ekberg, R. S. Dwyer-Joyce
Proc. ASME. RTD2005, Joint Rail, 73-81, March 16–18, 2005
Publisher: American Society of Mechanical Engineers
Paper No: RTD2005-70038
https://doi.org/10.1115/RTD2005-70038
View Paper titled, A Design Tool for Railway Wheels Incorporating Damage Models and Dynamic Simulations
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Topics: Damage, Design, Engineering simulation, Rail wheels, Simulation, Wheels, Dynamics (Mechanics), Modeling, Stress, Wear
Proceedings Papers

Thickness Measurements Around the Circumference of a Journal Bearing

R. S. Dwyer-Joyce, S. Kasolang
Proc. ASME. IJTC2006, Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics, 515-516, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12360
https://doi.org/10.1115/IJTC2006-12360
View Paper titled, Thickness Measurements Around the Circumference of a Journal Bearing
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Topics: Journal bearings, Thickness measurement, Cavitation, Bearings, Film thickness, Wedges, Fluid films, Load bearing capacity, Reflection, Sensors
Proceedings Papers

Ultrasonic Measurement of EHL Oil Films in a Mixed Regime Contact

R. S. Dwyer-Joyce, T. Reddyhoff
Proc. ASME. IJTC2006, Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics, 259-260, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12363
https://doi.org/10.1115/IJTC2006-12363
View Paper titled, Ultrasonic Measurement of EHL Oil Films in a Mixed Regime Contact
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Topics: Gears, Lubrication theory, Reflection, Rolling bearings, Springs, Stiffness, Surface roughness, Ultrasonic measurement
Proceedings Papers

Measurements of Contact and Leakage in a Pipe Flange Gasket

R. S. Dwyer-Joyce, P. Osborne, S. B. M. Beck
Proc. ASME. IJTC2006, Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics, 661-663, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12358
https://doi.org/10.1115/IJTC2006-12358
View Paper titled, Measurements of Contact and Leakage in a Pipe Flange Gasket
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Topics: Flanges, Gaskets, Leakage, Pipes, Stiffness, Manufacturing, Pressure vessels, Process industries, Signals, Stress
Proceedings Papers

Pedestrian Slips Caused by Particle Contamination

R. S. Dwyer-Joyce, R. Mills, M. Loo-Morrey
Proc. ASME. IJTC2006, Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology, 1211-1212, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12359
https://doi.org/10.1115/IJTC2006-12359
View Paper titled, Pedestrian Slips Caused by Particle Contamination
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Topics: Contamination, Particulate matter, Friction, Lubrication, Accidents, Adhesives, Die cutting, Particle size, Pendulums, Shapes
Journal Articles

Experimental Characterization of Wheel-Rail Contact Patch Evolution

M. B. Marshall, R. Lewis, R. S. Dwyer-Joyce, U. Olofsson, S. Björklund
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2006, 128(3): 493–504.
https://doi.org/10.1115/1.2197523
Published Online: March 21, 2006
View Article titled, Experimental Characterization of Wheel-Rail Contact Patch Evolution
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Topics: Pressure, Rails, Surface roughness, Wheels, Stress, Sands