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Ryan D. Evans
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Journal Articles

Factors Affecting Surface Roughness Measurement Results, and the Impact on Predicted Life of Elastohydrodynamic Lubricated Rolling-Element Bearings

Wolfgang Holzhauer, James R. Gnagy, Ryan D. Evans
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. October 2016, 138(4): 041501.
Paper No: TRIB-15-1193
https://doi.org/10.1115/1.4032790
Published Online: June 21, 2016
View Article titled, Factors Affecting Surface Roughness Measurement Results, and the Impact on Predicted Life of Elastohydrodynamic Lubricated Rolling-Element Bearings
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Topics: Bearings, Surface roughness, Rolling bearings
Journal Articles

Tribological Testing of Steel Coupons Bonded to Cu-Based Microchannel Heat Exchangers

Fanghua Mei, W. J. Meng, Carl H. Hager, Liang A. Xue, Ryan D. Evans, Gary L. Doll
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 032201.
https://doi.org/10.1115/1.4003858
Published Online: July 21, 2011
View Article titled, Tribological Testing of Steel Coupons Bonded to Cu-Based Microchannel Heat Exchangers
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Topics: Cooling, Friction, Heat exchangers, Lubrication, Microchannels, Steel, Testing, Tribology, Wear, Temperature
Proceedings Papers

Roller-Raceway Slip Simulations of Wind Turbine Gearbox Bearings Using Dynamic Bearing Model

Young Sup Kang, Ryan D. Evans, Gary L. Doll
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 407-409, October 17–20, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2010-41191
https://doi.org/10.1115/IJTC2010-41191
View Paper titled, Roller-Raceway Slip Simulations of Wind Turbine Gearbox Bearings Using Dynamic Bearing Model
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Topics: Bearings, Engineering simulation, Mechanical drives, Rollers, Simulation, Wind turbines, Stress, Clearances (Engineering), Degrees of freedom, Roller bearings
Proceedings Papers

Effects of Texture Modification on Bearing RCF Life

Young Sup Kang, Carl H. Hager, Dongbu Cao, Ryan D. Evans
Proc. ASME. IJTC2009, ASME/STLE 2009 International Joint Tribology Conference, 229-231, October 19–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2009-15089
https://doi.org/10.1115/IJTC2009-15089
View Paper titled, Effects of Texture Modification on Bearing RCF Life
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Topics: Bearings, Texture (Materials), Stress, Surface texture, Fatigue, Rolling bearings, Rolling contact, Stress concentration, Tribology
Proceedings Papers

Friction and Wear Performance of Candidate Surface Treatments for Wind Turbine Gearbox Bearings in High Slip Contacts

Ryan D. Evans, Carl H. Hager, Roger D. Logsdon
Proc. ASME. IJTC2009, ASME/STLE 2009 International Joint Tribology Conference, 491-493, October 19–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2009-15206
https://doi.org/10.1115/IJTC2009-15206
View Paper titled, Friction and Wear Performance of Candidate Surface Treatments for Wind Turbine Gearbox Bearings in High Slip Contacts
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Topics: Bearings, Friction, Mechanical drives, Surface finishing, Wear, Wind turbines, Testing, Adhesives, Boundary lubrication, Traction
Proceedings Papers

Contact Mechanism of Tribological Coatings With Columnar Microstructure

Young Sup Kang, Ryan D. Evans, Gary L. Doll
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 745-747, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71119
https://doi.org/10.1115/IJTC2008-71119
View Paper titled, Contact Mechanism of Tribological Coatings With Columnar Microstructure
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Topics: Coatings, Tribology, Deformation, Finite element analysis, Stress concentration, Bearings, Failure, Gears, Nanoindentation, Tungsten
Proceedings Papers

Traction of Lubricated Rolling Contacts Between Thin Film Coatings and Steel

Ryan D. Evans, J. David Cogdell, Gary L. Doll
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 921-923, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44261
https://doi.org/10.1115/IJTC2007-44261
View Paper titled, Traction of Lubricated Rolling Contacts Between Thin Film Coatings and Steel
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Topics: Coatings, Steel, Thin films, Traction, Lubricants, Bearings, Diamond films, Film thickness, Gears, Oxidation
Proceedings Papers

Cross-Sectional Analysis of Antiwear Films and Near-Surface Material From Tapered Roller Bearings

Ryan D. Evans
Proc. ASME. WTC2005, World Tribology Congress III, Volume 2, 159-160, September 12–16, 2005
Publisher: American Society of Mechanical Engineers
Paper No: WTC2005-64060
https://doi.org/10.1115/WTC2005-64060
View Paper titled, Cross-Sectional Analysis of Antiwear Films and Near-Surface Material From Tapered Roller Bearings
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Topics: Tapered roller bearings, Wear, Bearings, Electron diffraction, Focused ion beams, Gears, Imaging, Mineral oil, Spectroscopy, Sulfur
Proceedings Papers

Engineered Surfaces for Improved Gear Scuffing Resistance

Carl R. Ribaudo, Chris Aylott, Dieter Hofmann, Craig V. Darragh, Ryan D. Evans, Elizabeth P. Cooke, Gary L. Doll
Proc. ASME. IDETC-CIE2003, Volume 4: 9th International Power Transmission and Gearing Conference, Parts A and B, 923-930, September 2–6, 2003
Publisher: American Society of Mechanical Engineers
Paper No: DETC2003/PTG-48113
https://doi.org/10.1115/DETC2003/PTG-48113
View Paper titled, Engineered Surfaces for Improved Gear Scuffing Resistance
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Topics: Gears, Torque, Adhesives, Coatings, Helical gears, Lubrication, Stress, Testing, Thin films, Tribology