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Proceedings Papers

Experimental Study of Lubrication Film Formation in Multiple Contacts Device Under Starved Conditions

Petr Svoboda, David Kostal, Ivan Krupka, Martin Hartl
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 233-235, October 7–10, 2012
Paper No: IJTC2012-61123
DOI: https://doi.org/10.1115/IJTC2012-61123
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Topics: Lubrication, Film thickness, Computer simulation, Lubricants, Machine components, Bearings, Cams, Failure, Gears, Pressure
Proceedings Papers

A Fluid-Structure Interaction Modeling Approach of Lubricated Bearing-Type Sliding Contacts

Jeremiah N. Mpagazehe, C. Fred Higgs, III
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 131-133, October 7–10, 2012
Paper No: IJTC2012-61193
DOI: https://doi.org/10.1115/IJTC2012-61193
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Topics: Bearings, Fluid structure interaction, Modeling, Computational fluid dynamics, Approximation, Contamination, Equilibrium (Physics), Fluid films, Fluid pressure, Fluids
Proceedings Papers

The Effects of Floor Roughness on Shoe-Floor Friction Adhesion and Hysteresis

Matthew Cowap, Kurt Beschorner
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 111-113, October 7–10, 2012
Paper No: IJTC2012-61152
DOI: https://doi.org/10.1115/IJTC2012-61152
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Topics: Adhesion, Friction, Surface roughness, Rubber, Detergents, Tiles, Accidents, Blasting, Fluids, Gears
Proceedings Papers

Experimental Investigation of Transition in Lubrication Regime for Thin-Film Coated Surfaces

C. Lorenzo Martin, O. O. Ajayi, S. Torrel, G. R. Fenske, R. A. Erck
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 251-253, October 7–10, 2012
Paper No: IJTC2012-61171
DOI: https://doi.org/10.1115/IJTC2012-61171
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Topics: Lubrication, Thin films, Coatings, Friction, Tribology, Bearings, Carbon, Composite materials, Design, Engineers
Proceedings Papers

Influence of Surface Roughness on Traction and Scuffing Performance of Lubricated Contacts for Aerospace and Automotive Gearing

Sam Shon, Ahmet Kahraman, Kelsen LaBerge, Brian Dykas, David Stringer
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 87-89, October 7–10, 2012
Paper No: IJTC2012-61212
DOI: https://doi.org/10.1115/IJTC2012-61212
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Topics: Aerospace industry, Surface roughness, Traction, Gears, Polishing, Steel, Automotive transmissions, Disks, Lubricants, Mirrors
Proceedings Papers

Formulation of a Biobased Gear Oil Utilizing Boron Technology

Kenneth M. Doll, Glenn L. Heise, Malgorzata Myslinska, Brajendra K. Sharma
Proc. ASME. IJTC2012, ASME/STLE 2012 International Joint Tribology Conference, 351-353, October 7–10, 2012
Paper No: IJTC2012-61036
DOI: https://doi.org/10.1115/IJTC2012-61036
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Topics: Boron, Gears, Lubricants, Oxidation, Wear, Oils, Petroleum, Chemistry, Ester, Heat
Proceedings Papers

Gear Tribology Aspects in Aircraft High-Lift Actuation Systems

Anngwo Wang, Lotfi El-Bayoumy
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 171-177, October 24–26, 2011
Paper No: IJTC2011-61019
DOI: https://doi.org/10.1115/IJTC2011-61019
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Topics: Aircraft, Gears, Tribology, Actuators, Lubrication, Stress, Boundary lubrication, Failure, Film thickness, Sun gears
Proceedings Papers

Model Based Diagnostics for Gearboxes

Michael D. Bryant, Jihoon Choi
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 361-363, October 24–26, 2011
Paper No: IJTC2011-61263
DOI: https://doi.org/10.1115/IJTC2011-61263
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Topics: Bearings, Cracking (Materials), Dynamics (Mechanics), Engineering simulation, Flow (Dynamics), Fracture (Process), Gear teeth, Gears, Kinematics, Machinery
Proceedings Papers

Study of Elastohydrodynamic Film Shape Under Different Directions of Velocity Vectors

Milan Omasta, Ivan Krupka, Martin Hartl
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 401-403, October 24–26, 2011
Paper No: IJTC2011-61259
DOI: https://doi.org/10.1115/IJTC2011-61259
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Topics: Film thickness, Gears, Glass, Interferometry, Machinery, Shapes, Spiral bevel gears, Steel, Thin films
Proceedings Papers

Study of Lubrication Film Formation in Ball Bearings Under Starved Conditions

Petr Svoboda, Martin Vrbka, Petr Sperka, Ivan Krupka, Martin Hartl
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 183-185, October 24–26, 2011
Paper No: IJTC2011-61034
DOI: https://doi.org/10.1115/IJTC2011-61034
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Topics: Ball bearings, Lubrication, Lubricants, Disks, Film thickness, Machine components, Rolling bearings, Cams, Collapse, Engineering systems and industry applications
Proceedings Papers

Effect of Surface Texturing on EHD Lubrication Films Under Transient Speed Condition

Martin Zimmerman, Ivan Krupka, Martin Hartl, Pavel Houska
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 187-189, October 24–26, 2011
Paper No: IJTC2011-61046
DOI: https://doi.org/10.1115/IJTC2011-61046
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Topics: Lubrication, Transients (Dynamics), Lubricants, Film thickness, Cams, Damage, Disks, Gears, Glass, Interferometry
Proceedings Papers

Investigation of Effects of Additive for ATF and Test Condition on Pitting Life of Gear Tooth in the FZG Pitting Test

Toshihiko Ichihashi, Yutaka Takakura, Susumu Matsumoto
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 225-227, October 24–26, 2011
Paper No: IJTC2011-61166
DOI: https://doi.org/10.1115/IJTC2011-61166
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Topics: Gear teeth, Gears, Corporate average fuel economy, Fatigue, Fatigue life, Fuel efficiency, Sulfur, Transmission fluids, Tribological films, Viscosity
Proceedings Papers

Transient Thermal Lubrication Analysis of Involute Gear

Wen-zhong Wang, Jibin Hu, Hong Cao, Yuan-zhong Hu
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 203-205, October 17–20, 2010
Paper No: IJTC2010-41113
DOI: https://doi.org/10.1115/IJTC2010-41113
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Topics: Gears, Lubrication, Transients (Dynamics), Temperature effects, Cycles, Machinery, Spur gears
Proceedings Papers

Coupling of Two EHL-Lubricated Contacts in Gear Dynamics

Marco Barbieri, Francesco Pellicano
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 247-249, October 17–20, 2010
Paper No: IJTC2010-41237
DOI: https://doi.org/10.1115/IJTC2010-41237
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Topics: Dynamics (Mechanics), Gears, Lubrication, Spur gears, Transients (Dynamics), Equations of motion, Fluids, Stress, Vibration
Proceedings Papers

Characterizing and Comparing Fretting Fatigue and Pitting in Low-Amplitude Reciprocating Contact

Emil Sandoz-Rosado, Elon Terrell
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 211-213, October 17–20, 2010
Paper No: IJTC2010-41124
DOI: https://doi.org/10.1115/IJTC2010-41124
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Topics: Fatigue, Fracture (Materials), Failure, Cycles, Failure mechanisms, Fatigue cracks, Gears, Modeling, Turbine blades, Vibration
Proceedings Papers

Debris Contamination in Sliding Contacts

Jonathan P. Kyle, Elon J. Terrell
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 453-455, October 17–20, 2010
Paper No: IJTC2010-41306
DOI: https://doi.org/10.1115/IJTC2010-41306
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Topics: Contamination, Gears, Lubricants, Manufacturing, Particle size, Particulate matter, Sands, Silicon, Steel, Wear
Proceedings Papers

Study on the Oxidation Process of Mineral Gear and PFPE Oil During Durability Tests of Porous Sliding Bearings

Artur Kro´l, Bolesław Giemza, Tadeusz Kałdon´ski
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 223-225, October 17–20, 2010
Paper No: IJTC2010-41188
DOI: https://doi.org/10.1115/IJTC2010-41188
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Topics: Bearings, Durability, Gears, Minerals, Oxidation, Mineral oil, Temperature
Proceedings Papers

Nonlinear Mechanics of Rolling Contacts With Surface Defects

Mohsen Nakhaeinejad, Jaewon Choi, Michael D. Bryant
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 427-429, October 17–20, 2010
Paper No: IJTC2010-41246
DOI: https://doi.org/10.1115/IJTC2010-41246
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Topics: Displacement, Dynamics (Mechanics), Gears, Impulse (Physics), Modeling, Rolling bearings, Rolling contact, Signals
Proceedings Papers

Experiments on Grease Performance in Aircraft Landing Gear Pin Joints

Steven Daniel Pugh, Juan Juan Zhu, Rob S. Dwyer-Joyce
Proc. ASME. IJTC2010, STLE/ASME 2010 International Joint Tribology Conference, 199-201, October 17–20, 2010
Paper No: IJTC2010-41101
DOI: https://doi.org/10.1115/IJTC2010-41101
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Topics: Aircraft, Gears, Torque, Friction, Lubrication, Cycles, Machinery, Stress, Actuators, Displacement
Proceedings Papers

Prediction of Spur Gear Mechanical Power Losses Using an EHL Model With Time-Varying Contact Parameters

S. Li, A. Kahraman
Proc. ASME. IJTC2009, ASME/STLE 2009 International Joint Tribology Conference, 257-259, October 19–21, 2009
Paper No: IJTC2009-15193
DOI: https://doi.org/10.1115/IJTC2009-15193
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Topics: Spur gears, Gears, Stress, Elastohydrodynamic lubrication, Film thickness, Physics, Pressure, Temperature effects, Transients (Dynamics)