Proceedings of the

ASME/STLE International

Joint Tribology Conference

- 2009 -

nanotribology

biotribology

engineered surfaces (tribomaterials)

lubricants and additives

elastohydrodynamic lubrication

hydrodynam1c lubrication and fluid film bearings

machine components tribology

(rolling element bearings; engine tribology)

contact mechanics

magnetic storage tribology

track and symposium

manufacturing/metalworking tribology

herbert s. cheng symposium

wind turbine tribology

presented at

2009 ASME/STLE INTERNATIONAL JOINT TRIBOLOGY CONFERENCE

OCTOBER 19-21, 2009

MEMPHIS, TENNESSEE USA

sponsored byTRIBOLOGY DIVISION, ASME

SOCIETY OF TRIBOLOGISTS AND LUBRICATION ENGINEERS (STLE)

ASME

Three Park Avenue New York, N.Y. 10016

CONTENTS

NAIMOTRIBOLOGY

IJTC2009-15076 1

Characterization of Nano Crystalline Lubricating Coatings for Tribological and

Nano-Mechanical PropertiesNorm Gitis and Vishal Khosla

IJTC2009-15083 5

Tribological Characteristics of Carbon Nanotube Thermoplastic Resin CompositesYouichi Kawakubo, Masaki Nagata, Takashi Yokoyama, Yoshitaka Hayashi, and

Masahiro Arai

IJTC2009-15095 9

Solid Lubricant Nanoparticles as Wear-Reducing Additives in Sheet Metal Forming Fluids

M. Mosleh, N. D. Atnafu, and J. H. Be!k

UTC2009-15120 13

Analysis of Topographical Changes and Adhesion Failures in Gold-to-Gold Metal RF MEMS

Switches With Cycling

Seung Min Yeo, Spyros I. Tseregounis, Andreas A. Polycarpou, Adam Fruehling, and

Dimitrios Peroulis

IJTC2009-15140 17

From Wear to Self Healing in Nanostructured Biological and Technical SurfacesMichael Nosonovsky

IJTC2009-15184 21

A Model and Simulation of the Actuation of a CNT-Based fSlanoswitch

Yu-Chiao Wu and George G. Adams

IJTC2009-15192 25

Tribology Issues in the Operation of a Microswitch: A Tutorial

George G. Adams

IJTC2009-15205 27

A Multi-Physics Computational Framework to Predict Dishing and Erosion in

Patterned Wafers

Jeremiah N. Mpagazehe, Geo A. Thukalil, and C. Fred Higgs III

IJTC2009-15210 31

Energy Harvesting With Piezoelectric Nanobrushes: Analysis and Design PrinciplesCarmel Majidi, Mikko Haataja, and David J. Srolovitz

IJTC2009-15212 35

Adhesive Contact Between Atomistic Surfaces Using a Continuum AnalysisSimon Medina, Daniele Dini, and Andrew V. Olver

IJTC2009-15241 39

Quantification of Friction Force for Dual-Axis Probe Friction Force MicroscopeHiroaki Amakawa, Kenji Fukuzawa, Mitsuhiro Shikida, Hedong Zhang, and Shintaro Itoh

ix

BIOTRIBOLOGY

IJTC2009-15075 43UHMWPE Composites for Orthopaedic Applications: A New Paradigm

Kevin G. Plumlee and Christian J. Schwartz

IJTC2009-15134 47

Surface Chemical Patterning for Controlled Cell Adhesion

Q. Cheng and K. Komvopoulos

IJTC2009-1S169 51

A Model on the Motion of Wear Particles in the Synovial Fluid of an Artificial Hip Joint

Sunny M. Jhurani and C. Fred Higgs III

IJTC2009-15174 55

Influence of Surface Treatment of High Carbon Steel on the Reciprocating Wear in

Comparison With the 316 Stainless Steel

U. D. Gulhane, Manish Roy, S. G. Sapate, S. B. Mishra, and P. K, Mishra

IJTC2009-15251 59

Film Thickness Study of Lubricated, Compliant Contacts

C. Myant and H. A. Spikes

ENGINEERED SURFACES (TRIBOMATERIALS)

IJTC2009-15005 63

Tribological Properties of Cast AI6061-Si3l\l4 Composite

C. S. Ramesh, R. Keshavamurthy, and B. H. Channabasappa

IJTC2009-15044 67

An Energy Approach for Helping the Selection of Solid Lubrication Coatings Under

Fretting Conditions

D. B. Luo, V. Fridrici, Ph. Kapsa, M. Taillandier, and C. Prud'homme

IJTC2009-15061 71

Tribological Characteristics of the Aluminum-Silicon Alloy Impregnated Graphite

Composite Under Insufficiently Lubricated Reciprocating Sliding Conditions

Hozumi Goto and Claudiu Valentin Suciu

IJTC2009 15090 75

Characterization and Design of Laser Textured Surfaces

B. Podgornik, M. Sedlacek, L Vilhena, and J. Vizintin

IJTC2009-15098 79

Frictional Behavior of Boundary Lubricated Contacts: Effect of Tribochemical Surface Films

C. Lorenzo-Martin, O. O. Ajayi, JungKyu Lee, and Andreas A. Polycarpou

IJTC2009-1514183

Including Friction and Spin Rules in the Lattice-Based Cellular Automata Approach to Model

Granular Flows

Martin C. MarinackJr., Venkata K. Jasti, and C. Fred Higgs III

x

IJTC2G09-15143 87

An Experimental Study of the Effect of Global Solid Fraction and Surface Material on

Couette Granular Flow

Martin C. MarinackJr., Venkata K. Jasti, and C. Fred Higgs III

IJTC2009-15162 91

Investigation Into the Wear Films Formed on Certain Superalloys Between 20 and 600°C

During Rotation in an Unlubricated BearingP. D. Wood, H. E. Evans, and C. B. Ponton

IJTC2009-15177 95

Influence of Surface Finishing Operations on Reciprocating Sliding Friction and

Wear Response of WC Based Cemented Carbides

K. Bonny, P. De Baets, Y. Perez, S. Van Autreve, J. Van Wittenberghe, B. Lauwers,J. Vleugels, and O. Van der Biest

IJTC2009-15182 99

High Wear-Resistant and Ultra-Hard Nanocrystalline Diamond Films

M. Wiora, K. Bruhne, P. Gluche, T. M. Willey, S. O, Kucheyev, J. Biener, and H.-J. Fecht

IJTC2009-15185 103

Abrasive Wear Behavior of Permanent Moulded Toughened Austempered Ductile Iron

7. R. Uma, J. B. Simha, and K. Narasimha Murthy

IJTC2009-15186 107

Response of D-Gun Sprayed Alumina-Zirconia Ceramic Composite to Particle Erosion and

Sliding WearS. Rajakumar, L Vijayaraghavan, and M. M. Mayuram

IJTC2009-15187, 111

Tribological Properties of Si3N4 Sliding Against Bearing Steel Under Different Conditions

Yongxing Tong and Liqin Wang

1JTC2009-15189 115Effect of Cu Content on the Tribological Performance of Cr-N Coatings at

High Temperatures (840°C)Kyriaki Polychronopoulou, Claus Rebholz, Nicholaos G. Demas, Andreas A. Polycarpou,

and P. N. Gibson

IJTC2009-15190 119

Tribological Performance of Polymer Coatings in Carbon Dioxide Refrigerant Environment

Emerson Escobar Nunez and Andreas A. Polycarpou

IJTC2009-15215 123

Explicit Finite Element Simulation of Granular Flow in an Annular Shear Cell

M. A. Kabir, C. F. Higgs III, M. R. Lovell, V. Jasti, and M. C. Marinack

LUBRICANTS AND ADDITIVES

IJTC2009-15049 127

Tribological Properties and Applicability of Thermo-Reversible Gel-Lubricants

Nobuyoshi Ohno, Sobahan Mia, Kazuo Masuhara, Kentaro Sonoda, Yuji Yamashita,Yoshitaka Tamura, Shigeki Morita, and Yuji Shitara

xi

IJTC2009-15093 131

Synergistic Antioxidation Properties of Tin Dialkyldithiocarbamate with

DialkyldiphenylalmineJian-Qiang Hu, Ke-Yi Gao, and Da-Wei Liu

1JTC2009-15130 135

Analysis of the Benard Ceil-Like Worn Surface Type Occurred During Oil-Lubricated

Sliding Contact

Jen Fin Lin and Hsiao Yeh Chu

IJTC2009-15157 139

Tribological Film Formation on Hydrogenated DLC/Steel Contacts From Fully Formulated

Automotive Lubricants

B. L Papke and P. P. Parthasarathy

IJTC2009-15253 143

Film Forming Characteristics of Oil-in-Water Emulsions in Elastohydrodynamic Contacts

J. Hili, T. Reddyhoff, A. V. Olver, C. Peiietier, and L. Jacobs

ELASTOHYDRODYNAMIC LUBRICATION

IJTC2009-15091 147

Thermoelastohydrodynamic Analysis of Journal Bearings With Non-Newtonian

Carreau Fluids

M. Mongkolwongrojn and C. Aiumpornsin

IJTC2009-15094 151

Development of an Interferometric Technique to be Used in Measuring Micron Level

Clearances Filled With a Lubricant

Murat Yildirim, Zafer Dursunkaya, and Tuba Okutucu

IJTC2009-15101 155

Application of the Lobatto Quadrature Within Probabilistic Thermal Mixed EHL

Laurentiu Moraru and Theo G. Keith, Jr.

IJTC2009-15110 159

The Role of Fragility in EHL EntrapmentAshlie Martini and Scott Bair

HYDRODYNAMIC LUBRICATION AND FLUID FILM BEARINGS

IJTC2009-15023 163

Comparison of Air Ingestion vs. Dimensionless Parameters in Squeeze Film Dampers

Jorge E. Torres and Sergio E. Diaz

IJTC2009-15056 167

Stresses in Bearing Liner of Misaligned Hydrodynamically Lubricated Journal BearingsAbdallah A. Elsharkawy and Khaled J. Al-Fadhalah

IJTC2009-15057 171

Experimental Investigation of the Effect of Angular Misalignment on the Instability of

Plain Journal Bearings

Aly El-Shafei, Sameh H. Tawfick, and Mokhtar O. A. Mokhtar

xii

IJTC2009-15066

FDM Based Analysis of Gas Lubricated Foil Journal BearingsMakwana Nikita

175

IJTC2009-15068 179

Water Lubricated Marine Stern Tube Bearings: Attempt at Estimating

Hydrodynamic CapacityWojciech Litwin

IJTC2009-15070 183

Application of Computational Fluid Dynamics and Fluid-Solid-lnteraction Method to

Rotor-Bearing System

Huiping Liu, Hua Xu, Peter Ellison, and Zhongmin Jin

IJTC2009-15082 187

Evaluation of Oil Bearing Supported Rotors Coupled by Flexible Coupling

Choong Hyun Kim, Kyeong Soo Lee, and Yong-Bok Lee

IJTC2009-15084 189

The Static Characteristics of Bump Foil Thrust Bearing Considering Tilting Condition

Tae-Young Kim, Dong-Jin Park, and Yong-Bok Lee

IJTC2009-15128 193

Evaluation of the Dynamic Properties of Fluid Film Bearing Elastic SupportsNicoleta M. Ene, Florin Dimofte, Laurentiu E. Moraru, and Abdollah A. Afjeh

IJTC2009-15132 -197

A Study of a Dual Clearance Squeeze Film Damper

L. Moraru, T. G. Keith, Jr., F. Dimofte, S. Cioc, and D. P. Fleming

IJTC2009-15144 201

Thermohydrodynamic Lubrication Analysis of Slider Bearings With Steps on

Bearing Surface

Hideki Ogata

IJTC2009-15151 ,205

Numerical Analysis on Dynamic Characteristics of Flying Magnetic Head With

Ultra Thin SpacingHua-ping Yao, Yang-zhi Chen, and Huang Ping

IJTC2009-15188 209

Experimental Structural Stiffness and Damping in a 2nd Generation Foil Bearing for

Increasing Shaft TemperaturesLuis San Andres and Keun Ryu

MASS COMPONENTS TRIBOLOGY (ROLLING ELEMENT BEARINGS;

ENGINE TRIBOLOGY)IJTC2009-15027

Influence of Turbocharger Imbalance on Subsynchronous Vibration AmplitudeR. Gordon Kirk, John Sterling, William Sawyers, Mitchell Saville, T. Bradley McNiff, and

Lauren Wilvert

xiii

IJTC2009-15032 217

Optimized Logarithmic Roller Crowning Design of Cylindrical Roller Bearings and its

Experimental Demonstration

Hiroki Fujiwara, Tatsuo Kawase, Takuji Kobayashi, and Kazuto Yamauchi

IJTC2009-15037 221

Development of a High-Temperature Repetitive-Impact Apparatus for Exhaust Valve

Material TestingPeter J. Blau and Brian C. Jolly

IJTC2009-15Q55 225

Nickel-Titanium Alloys for Oil-Lubricated Bearing and Mechanical Component ApplicationsC. DellaCorte

IJTC2009-15089 229

Effects of Texture Modification on Bearing RCF Life

Young Sup Kang, Carl H. Hager, Dongbu Cao, and Ryan D. Evans

IJTC2009-15096 233

Effect of High Pressure Hydrogen on Wear of PTFE and PTFE CompositeY. Sawae, K. Nakashima, S. Doi, T. Murakami, and J. Sugimura

IJTC2009-15097 237

Influence of Ball Wedging Behavior in Ball Screws on Lost Motion of its Mechanism

Masahiro Ueda and Hirokazu Shimoda

UTC2009-15107 241

Fretting Wear of CMSX4 at Blade Tip Interface With and Without CoatingM. Lavella, D. Botto, and M. M. Gola

IJTC2009-15112 245

The Effect of Machining Induced White Layer on Frictional and Wear Performance at

Dry and Lubricated Sliding Contact

R. A. Waikar and Y. B. Guo

IJTC2009-15158 249

Multibody Dynamics of Rolling Element Bearings With Faults

Mohsen Nakhaeinejad and Michael D. Bryant

IJTC2009-15166 253

End Effect Attenuation in Tapered Roller Contacts

Emanuel Diaconescu

IJTC2009-15193 257

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

S. Li and A. Kahraman

IJTC2009-15201 261

Frictional Characteristics of IF-WS2 Nanoparticles in Simulated Engine Conditions

Burak Gullac and Ozgen Akalin

xiv

IJTC2009-15209 265

Wear Performance of Titanium and Niobium Added M0S2 Coatings Under

Isobutane ExposureMahmut F. Aksit, Huseyin Kizil, Ihsan Efeoglu, and Kemal Sariibrahimoglu

IJTC2009 15252 269

A Coupled Approach for Modelling Rolling Contact Fatigue Cracks Under

Elastohydrodyanmic Lubrication

R. Balcombe, M. T. Fowell, A. V. Olver, and D. Dini

CONTACT MECHANICS

UTC2009-15009 273

Contact Area Variation in Elastic Indentation Problems

Roman Riznychuk

IJTC2009-15018 277

Adhesion Due to Micro Menisci During Separation of Contact Surfaces

Shaobiao Cai, Yongli Zhao, and Bharat Bhushan

IJTC2009-15031 281

Very Early Stage of Elastic-Plastic Spherical Contact FrettingAndrey Ovcharenko and Izhak Etsion

UTC2009-15043 285

Nanoindentation of a Deformable Substrate Covered by Patterned Nanodot Asperities

Hengyu Wang, Min Zou, Robert L. Jackson, Preston R. Larson, and Matthew B. Johnson

IJTC2009 15051 289

Shakedown Response to Periodic Loading With Coulomb Friction

Young Ju Ahn

IJTC2009-15052,

293

Impact of a Compound Pendulum With a Surface Using a Nonlinear Contact Force

Eliza A. Banu, Dan Marghitu, and Robert L Jackson

UTC2009-15054 297

Revisiting the Cattaneo-Mindlin Concept of Interfacial Slip in Tangentially Loaded

Compliant Bodies

Izhak Etsion

IJTC2009-15099 301

A Study of Real Area of Contact for Tire/Road Interface

Jeremy J. Dawkins, Sameer G. Shah, and Robert L Jackson

IJTC2009-15104 305

Finite Element Analysis of Structural and Electromagnetic Effects on Asperity Contacts

David Noyes and Itzhak Green

IJTC2009-15106 309

An FFT Deterministic Simulation of Elastic Rough Surfaces in Three-Dimensional Contact

and Model AnalysisRobert L. Jackson and Itzhak Green

xv

IJTC2009-15109 313Effects of Lattice Orientation and Size on Molecular Asperity Contact Models

J. Robert Polchow, Wei Huang, and Robert L. Jackson

IJTC2009-15115 3! 7

An Improved Elastic Contact Model Accounting for Asperity Interaction and Bulk

Substrate Deformation

Jungkyu Lee, Chang-Dong Yeo, and Andreas A. Polycarpou

1JTC2009-15121 321

An Abrasive Wear Model of Fractal Surfaces Based on the Slip-Line Theory of PlasticityX. Yin and K. Komvopoulos

IJTC2009-15122 325

Spherical Indentation of an Elastic-Perfectly Plastic Half-Space: Deformation Map and

Evolution of PlasticityZ. Song and K. Komvopoulos

IJTC2009-15123 329

Contact Mechanics Analysis of a Rubber Piece on a Smooth Plate

Kyosuke Ono

IJTC2009-15126 333

Numerical Analysis of a Spherical Shell Compressed by a Rigid Flat

Longqiu Li, Izhak Etsion, Andrey Ovcharenko, and Frank Talke

IJTC2009-15138 337

Stress Field induced by a Stringer of Inhomogeneities in a Half SpaceKun Zhou, Leon M. Keer, Q. Jane Wang, Xiaolan Ai, Krich Sawamiphakdi, and

Peter Glaws

IJTC2009-15156 341

A Semi-Analytical Plastic-Damage Model Using the Equivalent Inclusion Problem

Benjamin Fulleringer, Timothy C. Ovaert, and Daniel Nelias

IJTC2009-15165 343

Effect of Body Lateral Extension Upon the Elastic Contact

Marilena Glovnea and Emanuel Diaconescu

IJTC2009-15167 347

Circular Contact of Incompressible, Nonlinear-Elastic Bodies

Emanuel Diaconescu, Marilena Glovnea, and Filip Ciutac

IJTC2009-15168 351

Contact Stress State in Elastic Layers

Sergiu Spinu and Emanuel Diaconescu

IJTC2009-15179 355

Analytical Results for the Resolution-Dependent Progression of Contact Area in a

Multi-Scale Contact Model

A. Goedecke, R. L. Jackson, and R. Mock

xvi

IJTC2009-15219 359

An Analytical Model for Predicting Contact Stress and Sliding Wear of a Three-Dimensional

Textured Surface

Elon J. Terrell and C. Fred Higgs III

IJTC2009-15221 363

Hysteresis Damping in Vibration Response of a Block in Elastic-Plastic RoughSurface Contact

A. Sepehri and K. Farhang

1JTC2009-15225 367

An Indirect Boundary Element Formulation for the Solution of Coupled 2D

Contact Problems

Angelos Zografos and Daniele Dini

IJTC2009-15229 371

Voltage Saturation in Electrical Contacts

Dinesh G. Bansal and Jeffrey L Streator

IJTC2009-15231 375

A FEM Based Multiple Asperity Deterministic Contact Model

A. Megalingam and M. M. Mayuram

IJTC2009-15234 379

Friction Characteristics of Porous Rubber Under Wet Conditions

Yutaro Kosugi, Tomoaki Iwai, Yutaka Shokaku, and Naoya Amino

IJTC2009-15237 383

ELISA Analysis of Latex Allergens on Wear Particles of Natural Rubber During Rolling

Sliding Contact

Yuki Yamamura, Tomoaki Iwai, and Yutaka Shokaku

IJTC2009-15244 387

Frictional Shakedown in Contact Problems of Layered SystemsSaverio Reina and Daniele Dini

MAGNETIC STORAGE TRIBOLOGY TRACK AND SYMPOSIUM

IJTC2009-15025 391

Effects of Surface Roughness on the Fly-Ability of a Thermal Protrusion Air Bearing Slider

Wei Hua, Bo Liu, Shengkai Yu, Weidong Zhou, and Leonard Gonzaga

IJTC2009-15034 395

Tribological Characteristics of Thin-Film Disks With and Without Mobile Lubricant

Youichi Kawakubo, Takahiro Hayakawa, Yusuke Sugawara, Koji Ikeda, andOsamu Kitamura

IJTC2009-15079 399

Design of Damped Air Bearings at Head Disk Interface

Jianhua Li, Junguo Xu, Yuki Shimizu, Masayuki Honchi, and Kyosuke Ono

xvii

1JTC2009-15118 403Effects of Altitude on the Thermal Flying Height Actuation

Jinglin Zheng, David B. Bogy, Shuyu Zhang, and Wentao Yan

IJTC2009-15119 407

Experimental and FEA Scratch Correlation of Magnetic Signal Degradation in MagneticStorage Thin-Film Disks

Raja Ft. Katta, Andreas A. Polycarpou, Sung-Chang Lee, and Mike Suk

IJTC2009-15124 41<|

Transient Thermomechanical Contact Between a Sphere and a Moving Flat

Andrey Ovcharenko, Min Yang, Kaynam Chun, and Frank E. Talke

IJTC2009-15127 415

Partial Contact Head-Disk Interface With Thermal Protrusion

Du Chen and David B. Bogy

IJTC2009-15137 419

Performance Optimization of Thermal Nano-Actuator for Fly Height Control in Disk Drives

Haisan Tan, Bo Liu, Mingsheng Zhang, and Shengkai Yu

IJTC2009-15172 423

Study on Lubricant Depletion Induced by Laser Heating in Thermally Assisted Magnetic

Recording Systems: Effect of Lubricant Thickness

.

Norio Tagawa, Hideki Andoh, and Hiroshi Tani

IJTC2O09-15176 427

A Three-Dimensional Stochastic Analysis of the Lapping Process Used for Magnetic

Recording Heads

H. Xu and K. Komvopoulos

IJTC2009-15207 431

Particle Contamination on a Thermal Flying-Height Control Slider

Nan Liu and David B. Bogy

IJTC2009-15208435

Fretting Wear Between a Hollow Sphere and Flat Surface

Bart Raeymaekers, Sebastian Helm, Half Brunner, Edmund B. Fanslau, and Frank E. Talke

MANUFACTURING/METALWORKING TRIBOLOGY

UTC2009-15071439

Chip Clogging in Dry Drilling: Workpiece Temperature Effects

Feng Qin, Kevin Chou, Dustin Nolen, and Raymond Thompson

IJTC2009-15072443

Nanostructured Diamond Coatings for Dry Drilling

Kevin Chou, Raymond Thompson, Feng Qin, Dustin Nolen, and Chao Miao

IJTC2009-15108 -

447

Tribologicai Performance of Additives for Water-Based Lubricants

A. Tomala, A. Karpinska, W. S. M. Werner, A. V. Olver, and H. Stori

xviii

IJTC2009-15113 451

The Effect of Micro Dent Arrays Fabricated by Laser Shock Peening on TribologyR. Caslaru and Y. B. Guo

IJTC2009-15195 455

An Explicit Finite Element Model to Study the Influence of Rake Angle on the Discontinuous

Chip Formation During Orthogonal Metal CuttingPradeep L. Menezes, Michael R. Lovell, Jeen-Shang Lin, and C. Fred Higgs III

IJTC2009-15196 459

Influence of Alloying Element Addition on Friction and Transfer Layer Formation in

Al-Mg System: Role of Surface Texture

Pradeep L. Menezes, Kishore, Satish V. Kailas, and Michael R. Lovell

IJTC2O09-15197, 463

Finite Element Modeling of Discontinuous Chip Formation During Rock CuttingPradeep L. Menezes, Michael R. Lovell, Jeen-Shang Lin, and C. Fred Higgs III

IJTC2009-15198 467

Influence of Inclination Angle and Surface Texture of the Plate on Friction and Transfer

Layer Formation

Pradeep L. Menezes, Kishore, Satish V. Kailas, and Michael R. Lovell

HERBERT S. CHENG SYMPOSIUM

IJTC2009-15038 471

Numerical Analysis of Point Contact EHL on Coated Substrates

Zhan-jiang Wang, Yuan-zhong Hu, Wen-zhong Wang, and Hui Wang

IJTC2009-15041 475

Hydrodynamic Pressure of Thrust Step BearingsShuangbiao Liu, W. Wayne Chen, and Diann Y. Hua

IJTC2009-15042 479

Recent Research and Future Challenges in the Simulation of Hydraulic Seals

Richard F. Salant, Bo Yang, and Azam Thatte

IJTC2009-15050 481

Effect of Surface Topography on Mixed Lubrication Film Under Transient Conditions

Ivan Krupka, Martin Hartl, and Petr Svoboda

IJTC2009-15173 483

A Simple Method to Calculate Contact Factor Used in Average Flow Model

F. M. Meng, Q. Jane Wang, Diann Hua, and Jordan Liu

IJTC2009-15211 487

Analytical Solution for the Stress Field of Eshelby's Inclusion of Polygonal ShapeXiaoqing Jin, Leon M. Keer, and Qian Wang

xix

WIND TURBINE TRIBOLOGY

IJTC2009-15206 491

Friction and Wear Performance of Candidate Surface Treatments for Wind Turbine

Gearbox Bearings in High Slip Contacts

Ryan D. Evans, Carl H. Hager, and Roger D. Logsdon

IJTC2009-15220 495

Current and Future Tribological Challenges in Wind Turbine Power SystemsEton J. Terrell, William M. Needelman, and Jonathan P. Kyle

IJTC2009-15255 499

Bearing Wear Due to Mechanical Stresses and Electrical Currents

S. Srinidhi, Mayank Tiwari, Rajni Buna, Hombre Gowda, and Paul A. Siemers

Author Index 503

xx