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Proceedings Papers

Evolution of Transferred Lubricant Distributions on the Slider Surface Under Ambient and Laser-Heating Conditions

Ryan W. Hetzel, Shao Wang, Jonathon R. Lawry, Ahmed H. Alsafwani
Proc. ASME. ISPS2019, ASME 2019 28th Conference on Information Storage and Processing Systems, V001T03A005, June 27–28, 2019
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2019-7458
https://doi.org/10.1115/ISPS2019-7458
View Paper titled, Evolution of Transferred Lubricant Distributions on the Slider Surface Under Ambient and Laser-Heating Conditions
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Topics: Disks, Evaporation, Heating, Lasers, Lubricants
Proceedings Papers

Molecular Dynamics Simulation of the Evaporation and Transfer of the Lubricant on a Hard Disk in Heat-Assisted Magnetic Recording

M. Ashraful Haq, Shao Wang, Zhencheng Ren, Yalin Dong
Proc. ASME. ISPS-MIPE2018, ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, V001T01A004, August 29–30, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ISPS-MIPE2018-8533
https://doi.org/10.1115/ISPS-MIPE2018-8533
View Paper titled, Molecular Dynamics Simulation of the Evaporation and Transfer of the Lubricant on a Hard Disk in Heat-Assisted Magnetic Recording
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Topics: Disks, Evaporation, Heat, Lubricants, Magnetic recording, Molecular dynamics simulation, Heat flux, Boundary-value problems, Heating, Lasers
Proceedings Papers

Lubricant Evaporation and Flow due to Laser Heating With a Skewed Temperature Distribution Induced by Disk Motion

M. Ashraful Haq, Shao Wang
Proc. ASME. ISPS2017, ASME 2017 Conference on Information Storage and Processing Systems, V001T01A019, August 29–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2017-5477
https://doi.org/10.1115/ISPS2017-5477
View Paper titled, Lubricant Evaporation and Flow due to Laser Heating With a Skewed Temperature Distribution Induced by Disk Motion
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Topics: Disks, Evaporation, Flow (Dynamics), Heating, Lasers, Lubricants, Temperature distribution, Heat, Surface tension, Approximation
Proceedings Papers

A Dynamic Model of the Magnetic Head Slider With Contact and Off-Track Motion due to a Thermally Actuated Protrusion or a Moving Bump Involving Intermolecular Forces

Saurabh Pathak, Shao Wang
Proc. ASME. ISPS2016, ASME 2016 Conference on Information Storage and Processing Systems, V001T01A016, June 20–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2016-9614
https://doi.org/10.1115/ISPS2016-9614
View Paper titled, A Dynamic Model of the Magnetic Head Slider With Contact and Off-Track Motion due to a Thermally Actuated Protrusion or a Moving Bump Involving Intermolecular Forces
Open the PDF for A Dynamic Model of the Magnetic Head Slider With Contact and Off-Track Motion due to a Thermally Actuated Protrusion or a Moving Bump Involving Intermolecular Forces in another window
Topics: Dynamic models, Intermolecular forces, Magnetic heads, Displacement, Collisions (Physics), Disks, Friction, Rotating disks
Proceedings Papers

Friction Characteristics of the Curved Sidewall Surfaces of a Rotary MEMS Device in Oscillating Motion

Jie Wu, Shao Wang, Jianmin Miao
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 57-59, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71189
https://doi.org/10.1115/IJTC2008-71189
View Paper titled, Friction Characteristics of the Curved Sidewall Surfaces of a Rotary MEMS Device in Oscillating Motion
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Topics: Friction, Microelectromechanical systems, Stiction, Actuators, Bearings, Bending (Stress), Crystals, Fittings, Manufacturing, Rotation
Proceedings Papers

A Plasticity Index, a Plasticity Number, and the Distribution of the Plastic Deformation Depth Based on a Fractal-Regular Contact Model

Shao Wang, Huyi Wang
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 597-599, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71199
https://doi.org/10.1115/IJTC2008-71199
View Paper titled, A Plasticity Index, a Plasticity Number, and the Distribution of the Plastic Deformation Depth Based on a Fractal-Regular Contact Model
Open the PDF for A Plasticity Index, a Plasticity Number, and the Distribution of the Plastic Deformation Depth Based on a Fractal-Regular Contact Model in another window
Topics: Deformation, Fractals, Plasticity, Density, Stress, Surface roughness
Proceedings Papers

A Performance Surface Method for Characterizing the Nonlinear Air Bearing Forces and Moments With Application to the Unloading Process

Yan Liu, Shao Wang
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 701-703, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71193
https://doi.org/10.1115/IJTC2008-71193
View Paper titled, A Performance Surface Method for Characterizing the Nonlinear Air Bearing Forces and Moments With Application to the Unloading Process
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Topics: Air bearings, Computation, Dynamics (Mechanics), Magnetic heads, Stiffness, Surface fitting
Proceedings Papers

A Simplified Dynamic Model for the Analysis of the Slider Off-Track Motion Due to Head-Disk Interactions

Yanhui Yuan, Shao Wang
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 673-675, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44194
https://doi.org/10.1115/IJTC2007-44194
View Paper titled, A Simplified Dynamic Model for the Analysis of the Slider Off-Track Motion Due to Head-Disk Interactions
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Topics: Disks, Dynamic models, Displacement, Excitation, Actuators, Impulse (Physics), Steady state
Proceedings Papers

Fractal-Regular Surface Characterization Based on Experimental Data From Atomic Force Microscopy of Hard Disks

Anne Sasikanth, Shao Wang
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 585-587, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44356
https://doi.org/10.1115/IJTC2007-44356
View Paper titled, Fractal-Regular Surface Characterization Based on Experimental Data From Atomic Force Microscopy of Hard Disks
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Topics: Atomic force microscopy, Disks, Fractals, Surface characterization, Spectral energy distribution, Shapes, Dimensions
Proceedings Papers

A MEMS Device for Studying the Friction Behavior of Sidewall Surfaces

Jie Wu, Shao Wang, Jianmin Miao
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 849-851, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44237
https://doi.org/10.1115/IJTC2007-44237
View Paper titled, A MEMS Device for Studying the Friction Behavior of Sidewall Surfaces
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Topics: Friction, Microelectromechanical systems, Actuators, Sensors, Displacement, Silicon, Crystals, Image processing, Plates (structures), Sliding friction
Proceedings Papers

Experimental and Theoretical Studies of the Fractal Scaling Parameter and the Lateral Scale Dependence of the Asperity Interference

Shao Wang, Yi Hui Leong
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 553-555, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44154
https://doi.org/10.1115/IJTC2007-44154
View Paper titled, Experimental and Theoretical Studies of the Fractal Scaling Parameter and the Lateral Scale Dependence of the Asperity Interference
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Topics: Fractals, Spectral energy distribution, Fast Fourier transforms, Modeling
Journal Articles

A Simplified Dynamic Model for the Analysis of the Slider Off-Track Motion Due to Head-Disk Interactions

Yanhui Yuan, Shao Wang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2009, 131(2): 021902.
https://doi.org/10.1115/1.3063808
Published Online: March 3, 2009
View Article titled, A Simplified Dynamic Model for the Analysis of the Slider Off-Track Motion Due to Head-Disk Interactions
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Topics: Disks, Displacement, Friction, Actuators, Stiffness
Proceedings Papers

Development of Theoretical Contact Width Formulas and a Numerical Model for Curved Rough Surfaces

Shao Wang
Proc. ASME. TRIB2004, ASME/STLE 2004 International Joint Tribology Conference, Parts A and B, 1225-1235, October 24–27, 2004
Publisher: American Society of Mechanical Engineers
Paper No: TRIB2004-64120
https://doi.org/10.1115/TRIB2004-64120
View Paper titled, Development of Theoretical Contact Width Formulas and a Numerical Model for Curved Rough Surfaces
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Topics: Computer simulation, Surface roughness, Stress, Deformation, Fractals, Dimensions, Pressure
Proceedings Papers

Experimental Observation of Fractal-Regular Surfaces and a Transformation Scheme for Extracting Fractal Parameters

Shao Wang, Wai Kin Chan
Proc. ASME. WTC2005, World Tribology Congress III, Volume 1, 319-320, September 12–16, 2005
Publisher: American Society of Mechanical Engineers
Paper No: WTC2005-63585
https://doi.org/10.1115/WTC2005-63585
View Paper titled, Experimental Observation of Fractal-Regular Surfaces and a Transformation Scheme for Extracting Fractal Parameters
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Topics: Fractals, Disks, Semiconductor wafers, Dimensions, Shapes, Spectral energy distribution, Surface roughness
Proceedings Papers

Determination of the Fractal Scaling Parameter From Simulated Fractal-Regular Surface Profiles Based on the Weierstrass-Mandelbrot Function

Shao Wang, Ji Shen, Wai Kin Chan
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, 713-719, October 23–25, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2006-12068
https://doi.org/10.1115/IJTC2006-12068
View Paper titled, Determination of the Fractal Scaling Parameter From Simulated Fractal-Regular Surface Profiles Based on the Weierstrass-Mandelbrot Function
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Topics: Fractals, Dimensions, Surface roughness, Approximation, Modeling
Journal Articles

Determination of the Fractal Scaling Parameter From Simulated Fractal-Regular Surface Profiles Based on the Weierstrass-Mandelbrot Function

Shao Wang, Ji Shen, Wai Kin Chan
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. October 2007, 129(4): 952–956.
https://doi.org/10.1115/1.2768617
Published Online: April 28, 2007
View Article titled, Determination of the Fractal Scaling Parameter From Simulated Fractal-Regular Surface Profiles Based on the Weierstrass-Mandelbrot Function
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Topics: Fractals, Surface roughness
Journal Articles

Development of Theoretical Contact Width Formulas and a Numerical Model for Curved Rough Surfaces

Shao Wang
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. October 2007, 129(4): 735–742.
https://doi.org/10.1115/1.2768072
Published Online: April 28, 2007
View Article titled, Development of Theoretical Contact Width Formulas and a Numerical Model for Curved Rough Surfaces
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Topics: Computer simulation, Fractals, Pressure, Stress, Surface roughness, Gaussian distribution, Dimensions, Cylinders
Journal Articles

Real Contact Area of Fractal-Regular Surfaces and Its Implications in the Law of Friction

Shao Wang, Associate Professor, Mem. ASME
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2004, 126(1): 1–8.
https://doi.org/10.1115/1.1609493
Published Online: January 13, 2004
View Article titled, Real Contact Area of Fractal-Regular Surfaces and Its Implications in the Law of Friction
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Topics: Fractals, Stress, Friction
Journal Articles

Thermal Non-Newtonian Elastohydrodynamic Lubrication of Line Contacts Under Simple Sliding Conditions

Shao Wang, T. F. Conry, C. Cusano
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1992, 114(2): 317–327.
https://doi.org/10.1115/1.2920890
Published Online: April 1, 1992
View Article titled, Thermal Non-Newtonian Elastohydrodynamic Lubrication of Line Contacts Under Simple Sliding Conditions
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Topics: Elastohydrodynamic lubrication, Film thickness, Temperature, Temperature effects, Traction
Journal Articles

Closure to “Discussion of ‘Thermal Analysis of Elastohydrodynamic Lubrication of Line Contacts Using the Ree-Eyring Fluid Model’” (1991, ASME J. Tribol., 113, pp. 242–243)

Shao Wang, C. Cusano, T. F. Conry
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. April 1991, 113(2): 243–244.
https://doi.org/10.1115/1.2924343
Published Online: April 1, 1991
View Article titled, Closure to “Discussion of ‘Thermal Analysis of Elastohydrodynamic Lubrication of Line Contacts Using the Ree-Eyring Fluid Model’” (1991, ASME J. Tribol., 113, pp. 242–243)
Open the PDF for Closure to “Discussion of ‘Thermal Analysis of Elastohydrodynamic Lubrication of Line Contacts Using the Ree-Eyring Fluid Model’” (1991, ASME J. Tribol., 113, pp. 242–243) in another window
Topics: Elastohydrodynamic lubrication, Fluids, Thermal analysis