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Proceedings Papers

Non-Newtonian Lubrication With the Second Order Fluid

W. Gregory Sawyer, John A. Tichy

Proc. ASME. IMECE97, Rheology and Fluid Mechanics of Nonlinear Materials, 7-13, November 16–21, 1997

Paper No: IMECE1997-0468

DOI: https://doi.org/10.1115/IMECE1997-0468

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Topics: Fluids, Lubrication, Lubricants, Boundary-value problems, Pressure, Tensors, Viscoelasticity

Journal Articles

Superlubricity in Gemini Hydrogels

Angela A. Pitenis, Juan Manuel Urueña, Andrew C. Cooper, Thomas E. Angelini, W. Gregory Sawyer

J. Tribol. October 2016, 138(4): 042103.

Paper No: TRIB-15-1294

DOI: https://doi.org/10.1115/1.4032890

Published Online: July 26, 2016

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Topics: Friction, Hydrogels, Tribology

Journal Articles

Lubricity from Entangled Polymer Networks on Hydrogels

Angela A. Pitenis, Juan Manuel Urueña, Ryan M. Nixon, Tapomoy Bhattacharjee, Brandon A. Krick, Alison C. Dunn, Thomas E. Angelini, W. Gregory Sawyer

J. Tribol. October 2016, 138(4): 042102.

Paper No: TRIB-15-1253

DOI: https://doi.org/10.1115/1.4032889

Published Online: July 26, 2016

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Topics: Friction, Hydrogels, Polymers, Polymerization

Proceedings Papers

Mechanical Characterization of Contact Lenses by Microindentation: Constant Velocity and Relaxation Testing

Sung Jin Lee, Gerald R. Bourne, Xiaoming Chen, W. Gregory Sawyer, Malisa Sarntinoranont

Proc. ASME. SBC2008, ASME 2008 Summer Bioengineering Conference, Parts A and B, 387-388, June 25–29, 2008

Paper No: SBC2008-192640

DOI: https://doi.org/10.1115/SBC2008-192640

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Topics: Relaxation (Physics), Testing, Fluids, Hydrogels, Materials properties, Design, Electrical conductance, Finite element analysis, Fittings, Lenses (Optics)

Proceedings Papers

Microindentation Testing of Rat Brain Tissue Slices

James S. Wu, Alison C. Dunn, Sung J. Lee, W. Gregory Sawyer, Malisa Sarntinoranont

Proc. ASME. SBC2007, ASME 2007 Summer Bioengineering Conference, 897-898, June 20–24, 2007

Paper No: SBC2007-176235

DOI: https://doi.org/10.1115/SBC2007-176235

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Topics: Biological tissues, Brain, Testing, Mechanical properties, Nondestructive evaluation

Proceedings Papers

Evaluation of Contact Force and Elastic Foundation Models for Wear Analysis of Multibody Systems

Saad M. Mukras, Nam Ho Kim, Tony L. Schmitz, W. Gregory Sawyer

Proc. ASME. IDETC-CIE2010, Volume 2: 34th Annual Mechanisms and Robotics Conference, Parts A and B, 1565-1577, August 15–18, 2010

Paper No: DETC2010-28750

DOI: https://doi.org/10.1115/DETC2010-28750

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Topics: Multibody systems, Wear, Finite element methods, Clearances (Engineering), Damping, Dynamic analysis, Pressure, Dynamics (Mechanics), Shapes, Waste-to-energy

Journal Articles

Comparison Between Elastic Foundation and Contact Force Models in Wear Analysis of Planar Multibody System

Saad Mukras, Nam H. Kim, Nathan A. Mauntler, Tony Schmitz, W. Gregory Sawyer

J. Tribol. July 2010, 132(3): 031604.

DOI: https://doi.org/10.1115/1.4001786

Published Online: July 21, 2010

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Topics: Multibody systems, Waste-to-energy, Wear, Bushings, Clearances (Engineering)

Proceedings Papers

Dynamic Modeling of a Slider-Crank Mechanism Under Joint Wear

Saad Mukras, Nate Mauntler, Nam Ho Kim, Tony Schmitz, W. Gregory Sawyer

Proc. ASME. IDETC-CIE2008, Volume 2: 32nd Mechanisms and Robotics Conference, Parts A and B, 443-452, August 3–6, 2008

Paper No: DETC2008-49244

DOI: https://doi.org/10.1115/DETC2008-49244

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Topics: Dynamic modeling, Wear, Kinematics, Dynamic models, Instrumentation, Modeling

Proceedings Papers

Environmental Performance Limits of Ultrananocrystalline Diamond Films

Matthew A. Hamilton, Andrew R. Konicek, David S. Grierson, A. V. Sumant, Orlando Auciello, W. Gregory Sawyer, Robert W. Carpick

Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 9-10, October 20–22, 2008

Paper No: IJTC2008-71198

DOI: https://doi.org/10.1115/IJTC2008-71198

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Topics: Diamond films, Diamonds, Friction, Carbon, Grain size, Mechanical properties, Nitrogen, Rendering, Temperature, Tribology

Journal Articles

Material Property Identification and Sensitivity Analysis Using Micro-Indentation

Long Ge, Nam H. Kim, Gerald R. Bourne, W. Gregory Sawyer

J. Tribol. July 2009, 131(3): 031402.

DOI: https://doi.org/10.1115/1.3142902

Published Online: June 1, 2009

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Topics: Materials properties, Sensitivity analysis, Geometry, Simulation, Optimization, Response surface methodology

Journal Articles

Temperature and Water Vapor Pressure Effects on the Friction Coefficient of Hydrogenated Diamondlike Carbon Films

Pamela L. Dickrell, N. Argibay, Osman L. Eryilmaz, Ali Erdemir, W. Gregory Sawyer

J. Tribol. July 2009, 131(3): 032102.

DOI: https://doi.org/10.1115/1.3139047

Published Online: May 27, 2009

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Topics: Friction, Pressure, Temperature, Water vapor, Carbon films, Desorption

Proceedings Papers

Tribological Investigation of a Low Friction, Low Wear Polymer/Polymer Composite

David L. Burris, W. Gregory Sawyer

Proc. ASME. WTC2005, World Tribology Congress III, Volume 2, 921-922, September 12–16, 2005

Paper No: WTC2005-63524

DOI: https://doi.org/10.1115/WTC2005-63524

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Topics: Friction, Polymer composites, Polymers, Tribology, Wear, Composite materials, Fillers (Materials), Lubricants, Nanoparticles, Particulate matter

Proceedings Papers

Nano-Tribology of a Polytetrafluoroethylene Transfer Films Using Molecular Dynamics Simulation and Microtribometry

Inkook Jang, Pamela L. Dickrell, David L. Burris, W. Gregory Sawyer, Simon R. Phillpot, Susan B. Sinnott

Proc. ASME. WTC2005, World Tribology Congress III, Volume 2, 933-934, September 12–16, 2005

Paper No: WTC2005-63881

DOI: https://doi.org/10.1115/WTC2005-63881

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Topics: Chain, Engineering simulation, Lubricants, Molecular dynamics, Molecular dynamics simulation, Nanotribology, Polymer nanocomposites, Polymers, Simulation, Tribology

Proceedings Papers

Material Property Identification and Sensitivity Analysis Using Indentation and FEM

Long Ge, Nam Ho Kim, Gerald R. Bourne, W. Gregory Sawyer

Proc. ASME. IDETC-CIE2006, Volume 1: 32nd Design Automation Conference, Parts A and B, 481-489, September 10–13, 2006

Paper No: DETC2006-99329

DOI: https://doi.org/10.1115/DETC2006-99329

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Topics: Finite element methods, Finite element model, Materials properties, Sensitivity analysis, Mechanical properties, Bulk solids, Coatings, Finite element analysis, Geometry, Manufacturing

Proceedings Papers

The Pigskin Professor: Video Presentations of Engineering Fundamentals

Tony L. Schmitz, W. Gregory Sawyer, Arturo Sinclair

Proc. ASME. IMECE2004, Innovations in Engineering Education: Mechanical Engineering Education, Mechanical Engineering/Mechanical Engineering Technology Department Heads, 53-57, November 13–19, 2004

Paper No: IMECE2004-60539

DOI: https://doi.org/10.1115/IMECE2004-60539

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Topics: Engineering fundamentals, Engineering teachers, Aerospace engineering, Collaboration, Engineering education, Fans

Journal Articles

Predicting Knee Replacement Damage in a Simulator Machine Using a Computational Model With a Consistent Wear Factor

Dong Zhao, Hideyuki Sakoda, W. Gregory Sawyer, Scott A. Banks, Benjamin J. Fregly

J Biomech Eng. February 2008, 130(1): 011004.

DOI: https://doi.org/10.1115/1.2838030

Published Online: February 5, 2008

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Topics: Cycles, Damage, Knee joint prostheses, Machinery, Wear, Simulation, Cylinders, Geometry

Proceedings Papers

Metallic Glass Surface Patterning by Micro-Molding

Jeffrey Bardt, Nathan Mauntler, Gerald Bourne, Tony L. Schmitz, John C. Ziegert, W. Gregory Sawyer

Proc. ASME. IMECE2005, Manufacturing Engineering and Materials Handling, Parts A and B, 1123-1129, November 5–11, 2005

Paper No: IMECE2005-81099

DOI: https://doi.org/10.1115/IMECE2005-81099

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Topics: Metallic glasses, Molding, Crystallization, Geometry, Glass transition, Metals, Reactive-ion etching, Semiconductor wafers, Temperature

Journal Articles

A Biphasic Model for Micro-Indentation of a Hydrogel-Based Contact Lens

Xiaoming Chen, Alison C. Dunn, W. Gregory Sawyer, Malisa Sarntinoranont

J Biomech Eng. April 2007, 129(2): 156–163.

DOI: https://doi.org/10.1115/1.2472373

Published Online: September 13, 2006

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Topics: Finite element methods, Finite element model, Fluids, Hydrogels, Lenses (Optics), Permeability, Young's modulus, Displacement, Fittings, Testing

Journal Articles

The Difficulty of Measuring Low Friction: Uncertainty Analysis for Friction Coefficient Measurements

Tony L. Schmitz,, Jason E. Action,, John C. Ziegert, and, W. Gregory Sawyer

J. Tribol. July 2005, 127(3): 673–678.

DOI: https://doi.org/10.1115/1.1843853

Published Online: June 13, 2005

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Topics: Friction, Uncertainty, Transducers, Uncertainty analysis, Tribometers, Calibration

Journal Articles

Wear-Rate Uncertainty Analysis

Tony L. Schmitz, Jason E. Action, David L. Burris, John C. Ziegert, W. Gregory Sawyer

J. Tribol. October 2004, 126(4): 802–808.

DOI: https://doi.org/10.1115/1.1792675

Published Online: November 9, 2004

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Topics: Uncertainty, Wear, Uncertainty analysis

Journal citation

NARROW

Non-Newtonian Lubrication With the Second Order Fluid

Superlubricity in Gemini Hydrogels

Lubricity from Entangled Polymer Networks on Hydrogels

Mechanical Characterization of Contact Lenses by Microindentation: Constant Velocity and Relaxation Testing

Microindentation Testing of Rat Brain Tissue Slices

Evaluation of Contact Force and Elastic Foundation Models for Wear Analysis of Multibody Systems

Comparison Between Elastic Foundation and Contact Force Models in Wear Analysis of Planar Multibody System

Dynamic Modeling of a Slider-Crank Mechanism Under Joint Wear

Environmental Performance Limits of Ultrananocrystalline Diamond Films

Material Property Identification and Sensitivity Analysis Using Micro-Indentation

Temperature and Water Vapor Pressure Effects on the Friction Coefficient of Hydrogenated Diamondlike Carbon Films

Tribological Investigation of a Low Friction, Low Wear Polymer/Polymer Composite

Nano-Tribology of a Polytetrafluoroethylene Transfer Films Using Molecular Dynamics Simulation and Microtribometry

Material Property Identification and Sensitivity Analysis Using Indentation and FEM

The Pigskin Professor: Video Presentations of Engineering Fundamentals

Predicting Knee Replacement Damage in a Simulator Machine Using a Computational Model With a Consistent Wear Factor

Metallic Glass Surface Patterning by Micro-Molding

A Biphasic Model for Micro-Indentation of a Hydrogel-Based Contact Lens

The Difficulty of Measuring Low Friction: Uncertainty Analysis for Friction Coefficient Measurements

Wear-Rate Uncertainty Analysis

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