early career posters

EARLY CAREER POSTERS

Influences of Adsorbed Water on the InterfacialTribological Phenomena in the Early Stage of SlidingZ.A. Subhi, Malaysia-Japan International Institute of Technology, Kuala Lumpur, Malaysia

Surfaces are covered by adsorbed water layer due to ambienthumidity. In the tribology of micro contacts, frictional andadhesive properties are sensitive to the adsorbed water becausesurface phenomena become more dominant than volumetricphenomena and therefore the influences of adsorbed water onadhesion become dominant. This study aimed to explore themechanism of humidity changes to influence the adhesion by theobservation of the tribological behaviour during the very earlystage of sliding. In this study, a unidirectional ball-on-ballconfiguration tribo-contact simulator (T-CS) along withatmospheric humidity controller, were used to simulate the micro-sliding between two asperities. Results have suggested that themedium rate of relative humidity can be a critical condition forthe tribo-contact due to the effect of liquid assisted adhesion.This critical condition is perhaps caused by the negative Laplacepressure of the meniscus bridge formed between the adsorbedwater layer.

Molecular Dynamics Simulation of Drag Reductionby Nanobubble Clusters as Affected by SurfaceMorphologyY. Lu, Wuhan University of Technology, Wuhan, China

The investigations of natural superhydrophobic surfaces of plantsand animals showed that the wettability property is governed bythe nanostructure characteristics of the surface. As a result of theimproved surface hydrophobic by morphology, the trapping ofgas is promoted on surface cavities to induce friction dragreduction, but gas cushion cannot stably exist. Nanoscopic gasbubbles that exhibit along lifetime and considerable stability mayhelp improve the situation. In this study, molecular dynamicssimulations are performed to analyze the formation behavior ofnanobubble and the effect of nanobubble flow on thenanochannel with various surface morphologies. Results showthat the existence of gaseous nanobubbles can be trapped by the

surface cavities, which replace the dense and orderly absorbedliquid layer in non-bubble flow. Therefore, introducing surfacemorphology can further improve the effect on drag reduction.

Tribological Properties of Additive ManufacturedTi6Al4V Against Tungsten Carbide Under Dry ConditionX. Liang, Tsinghua University, Beijing, China

With the development of additive manufacturing (AM technology,titanium alloy manufactured by AM is widely used in aviationmanufacturing. Although AM can achieve near net shape, thenecessary machining is inevitable. In this paper, the tribologicalbehaviors and wear mechanism of additive manufactured Ti6Al4Vagainst tungsten carbide under dry friction condition are studied.The influence of normal load and temperature on frictioncoefficient were studied. The results show that the effect of loadand temperature on friction coefficient is not obvious. Wecalculated the wear rate and found that the wear rate increasedwith the increase of load but decreased significantly with theincrease of temperature. EDS analysis on the surface of the frictionpair shows that tungsten oxide is generated on the friction surfaceat high temperature. Because tungsten oxide has lubricationproperties, it reduces the wear rate at high temperature.

STUDENT POSTERS

Synergistic Effect of Combining TiO2 and MontmorilloniteClay Nanoparticles as Lubricant Additives for MillingProcessesM.G. Flores, C.S. Rico, G.E. Gonzalez, Universidad de Monterrey, San Pedro Garza García,Mexico

In this work, nanoparticles of TiO2 and montmorillonite claywere mixed with varying proportions and added to a cuttingfluid for milling of an AISI 4340 steel. Due to its semi-sphericalshape and small size nano TiO2 fill surface valleys reducing friction;montmorillonite, being a multilayer flake-like nanomaterial mayreduce friction and wear through exfoliation of their weakly-bonded layers. Laboratory experiments were performed in afour-ball tribotester to determine the best proportions of TiO2 and

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montmorillonite clay that provided a synergistic effect. Millingexperiments were performed in a CNC equipment with varyingfeed rate, depth of cut and cutting speed. Plates of AISI 4340 steelwere milled with cutting inserts of cemented carbides. A BoxBehnken experimental design was performed in order to optimizethe milling input parameters and nanoparticle combinationsthat provided the lowest surface roughness of steel plates, spindleload and wear of cutting inserts.

Wear and Corrosion Performance of Friction Stir SpotProcessed 316L Stainless Steel Deposited by HighDeposition Rate Cold Spray Additive ManufacturingProcessP.R. Kalvala, M. Daroonparvar, M. Misra, A.M. Ralls, A.K. Kasar, P. Menezes, Universityof Nevada–Reno, Reno, NV

High Deposition Rate Cold Spray (HDR-CS) is a novel solid-statemetal deposition process that uses the additive based principlesfrom additive manufacturing (AM). By rapidly accelerating metalparticles to a substrate, components can be prepared where theparticles’ intrinsic metallurgical properties are retained thusserving as an advantage over other AM-based technologies.Expanding CS to an industrial perspective, CS deposits act as aneasy and effective method to repair various parts. This is especiallytrue in marine-based industries where the combination of cyclicloading and corrosion can greatly diminish the surface materialover time. However, the synergism between the wear and corrosionof CS 316L is not well studied. In this work, friction-stir processing(FSP) has been used to enhance the CS coatings’ wear-corrosionresistance. The microstructural evolution and mechanicalproperties were then analyzed. The mechanisms for the improvedwear-corrosion resistance are discussed.

The Effect of Axisymmetric Texture Floor Profile on theLubricant Film Thickness of Textured Hard-on-SoftProsthetic Hip Implant BearingsQ. Allen, B. Raeymaekers, University of Utah, Salt Lake City, UT

Polyethylene wear debris causes osteolysis and premature failureof prosthetic hip implants. We design a pattern of texture featureson the femoral head to increase the lubricant film pressure andthickness and reduce the polyethylene wear in hard-on-softprosthetic hip implants. Specifically, we use a softelastohydrodynamic lubrication model to study the effect ofdifferent axisymmetric texture floor profiles on the lubricant filmthickness. We find the optimum texture parameters that maximizethe lubricant film thickness for each texture floor profile as afunction of bearing operating conditions. We find that flat texturefloor profiles create thicker lubricant films than curved and slopedtexture floor profiles. We compare the texture feature volumesof the optimum texture design parameters and find a linearrelationship between the texture feature volume and thecorresponding optimum lubricant film thickness that holds trueindependent of the axisymmetric texture floor profile.

The Interfacial Gradient and its Role in Ultralow WearSlidingI. Alam, D.L. Burris, University of Delaware, Newark, DE, J. Ye, J. Wei, J. Zeng, W. Sun, X. Liu,K. Liu, Hefei University of Technology, Anhui, China

In this paper, we elucidate the effects of interfacial gradientswithin the native ultralow wear PTFE composite-on-transfer filmsystem using interrupted wear tests and intermittent surfaceanalysis. As anticipated, the transition from high wear to ultralowwear was accompanied by small adherent debris, tribochemicalformation of carboxylates, increased surface energy, and increasedadhesion. Interestingly, we observed significant differences oneither side of the interface during low wear sliding; compared tothe running films on the composite surface, the transfer films onthe counterface exhibited consistently greater tribochemicaldegradation, surface energy, and adhesion to a model aluminaprobe. This interfacial gradient, we propose, is a necessary featureof the ultralow wear system and functions by setting the directionand driving force for transfer wear. In this case, the interfacialgradient stabilizes the transfer film and minimizes the driving forcefor running film wear.

Molecular Dynamics Investigation of Core-ShellNanostructuresS.E. Hughes, R. Fleming, Arkansas State University, Jonesboro, AK

Core-shell nanostructures (CSNs) are novel structures that havethe potential to exhibit unique mechanical properties.Experimentally, surfaces patterned with Al/a-Si CSNs have beenshown to have a low coefficient of friction and high durability.Molecular dynamics (MD) simulations can provide helpful insightinto the material behavior of CSNs and help garner a betterunderstanding of the physical mechanisms which enable theseunique material properties. In this study, MD simulations areperformed to investigate the role of core material and core-shellinterface on the dynamics of dislocations nucleated within thecore of CSNs during contact loading. Better understanding of theproperties of CSNs will further enable their use in tribologicalapplications, such as solid lubrication.

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Student Posters (con’t)

2020-2021 STLE BOARDOF DIRECTORS

Paul Hetherington (President)HollyFrontier Lubricants & SpecialtiesMississauga, Ontario, Canada

Ken Hope (Vice President)Chevron Phillips Chemical Co.The Woodlands, TX

Ryan D. Evans (Secretary)The Timken Co.North Canton, OH

Hong Liang (Treasurer)Texas A&M UniversityCollege Station, TX

Michael P. Duncan (Immediate PastPresident & Presidential Council Chair)Daubert Chemical Co.Chicago, IL

Edward P. Salek, CAE (ExecutiveDirector)STLE HeadquartersPark Ridge, IL

William AndersonAfton Chemical Corp.Richmond, VA

Nicolas ArgibaySandia National LaboratoriesAlbuquerque, NM

Steffen BotsLubeServBrannenburg, Germany

Michel FillonUniversite de PoitiersFuturoscope Chasseneuil, Cedex, France

Aaron GrecoArgonne National LaboratoryLemont, IL

Karen HarringtonFuchs Lubricants Co.Harvey, IL

Brian M. HoltkampNye LubricantsLibertyville, IL

Brian HovikViking EngineeringLeavenworth, WA

Robert JacksonAuburn UniversityAuburn, AL

Peter LeeSouthwest Research InstituteSan Antonio, TX

Mandi McElwainUnivar SolutionsPhiladelphia, PA

Kuldeep MistryThe Timken Co.North Canton, OH

Farrukh QureshiThe Lubrizol Corp.Wickliffe, OH

Thomas ScharfUniversity of North TexasDenton, TX

Raj ShahKoehler Instrument Co., Inc.Holtsville, NY

David TurnerCITGO Petroleum Corp.Houston, TX

Evan ZabawskiTestOilCalgary, Alberta, Canada

Min ZouUniversity of ArkansasFayetteville, AK

COMMITTEES ANDINDUSTRY COUNCILS

Annual Meeting Program Committee

Min Zou (Chair)University of ArkansasFayetteville, AK

Robert Jackson (Vice Chair)Auburn UniversityAuburn, AL

Gareth Fish (Secretary)The Lubrizol CorporationWickliffe, OH

Ashlie MartiniUniversity of California, MercedMerced, CA

Azzedine DadoucheNational Research Council CanadaOttawa, ON, Canada

Jun QuOak Ridge National LaboratoryOak Ridge, TN

Alison C. DunnUniversity of Illinois at Urbana-ChampaignUrbana, IL

Annual Meeting Education CourseCommittee

Scott Howard (Chair)Hy-Pro FiltrationVirginia Beach, VA

Anil AgiralThe Lubrizol CorporationWickliffe, OH

Brian HovikViking EngineeringLeavenworth, WA

Babak LoftiExxonMobil Chemical CompanyBaytown, TX

Alex MannionBASF CorporationFlorham Park, NJ

Yvette TrzcinskiHolly FrontierWaukesha, WI


2021 STLE Virtual Annual Meeting & ExhibitionCOMMITTEES AND COUNCILS


Awards Committee

Nicolas Argibay (Chair)Sandia National LaboratoriesAlbuquerque, NM

Ankur Ashtekar (Vice Chair)Sentient Science CorporationBuffalo, NY

John BomidiBaker HughesThe Woodlands, TX

Nicholaos DemasArgonne National LaboratoryLemont, IL

Kuldeep MistryThe Timken Co.North Canton, OH

Carlos SanchezSouthwest Research InstituteSan Antonio, TX

Qian (Beth) ZouOakland UniversityRochester, MI

Education Committee

Ramoun Mourhatch (Chair)Chevron Oronite Co. LLCRichmond, CA

Scott Howard (Vice Chair)Hy-Pro FiltrationVirginia Beach, VA

Richard ButlerDuBois ChemicalsBedford Park, IL

Neil CanterChemical SolutionsWillow Grove, PA

Charles CoeGrease Technology Solutions, LLCRound Hill, VA

Greg CroceChevron Products Co.Richmond, CA

Karen HarringtonFuchs Lubricants CompanyHarvey, IL

Lawrence Ludwig, Jr.Schaeffer Manufacturing CompanySt. Louis, MO

Frederick J. PassmanBCA, Inc.Princeton, NJ

Michael StapelsKao Chemicals GmbHEmmerich, Germany

Fellows Committee

Michael T. Dugger (Chair)Sandia National LaboratoriesAlbuquerque, NM

Daniel Nelias (Vice Chair)LaMCoS INSA De LyonVilleubanne, Cedex, France

Gary DollUniversity of AkronAkron, OH

Raj ShahKoehler Instrument Co., Inc.Holtsville, NY

Min ZouUniversity of ArkansasFayetteville, AK

Jeffrey StreatorGeorgia Institute of TechnologyAtlanta, GA

Frederick J. PassmanBCA, Inc.Princeton, NJ

Biotribology Technical Committee

Gagan Srivastava (Chair)Dow Chemical CompanyFreeport, TX

Dipankar Choudhury (Vice Chair)University of ArkansasFayetteville, AR

Kurt Beschorner (Secretary)University of PittsburghPittsburgh, PA

Angela Pitenis (PSC)University of California, Santa BarbaraSanta Barbara, CA

Alison C. Dunn (Vice PSC)University of Illinois at Urbana-ChampaignUrbana, IL

Alison C. Dunn (PSC for Tribology ofBiomaterials: Materials & BiotribologyJoint Session)University of Illinois at Urbana-ChampaignUrbana, IL

Brandon Krick (PSC for Tribology ofBiomaterials: Materials & BiotribologyJoint Session)Florida State University, Tallahassee, FL

Condition Monitoring/PredictiveMaintenance Technical Committee

Daniel Walsh (Chair)Spectro ScientificChelmsford, MA

Michael Plumley (Vice Chair)US Coast Guard AcademyNew London, CT

Kemberlee Snelling (PSC)Trico CorporationDavison, MI

Jatin Mehta (Vice PSC)Fluitec InternationalJersey City, NJ

Contact Mechanics TechnicalCommittee

Kyle D. Schulze (Chair)Auburn UniversityAuburn, AL

Ali Beheshti (Vice Chair)George Mason UniversityFairfax, VA

Rohit Voothaluru (Secretary)The Timken CompanyNorth Canton, OH

Hamid Ghaednia (PSC)Harvard UniversityMassachusetts General HospitalBoston, MA

Morgan R. Jones (Vice PSC)Sandia National LaboratoriesAlbuquerque, NM

Matthew Brake (Award Chair)Rice UniversityHouston, TX




Engine and Drivetrain TechnicalCommittee

William Anderson (Chair)Afton Chemical CorporationRichmond, VA

Raj Chandramohanan (Vice Chair)Borg WarnerArden, NC

Cole Hudson (Secretary)Southwest Research InstituteSan Antonio, TX

Carlos Sanchez (PSC)Southwest Research InstituteSan Antonio, TX

Hamed Ghaednia (Vice PSC)GehringLivonia, MI

Environmentally Friendly FluidsTechnical Committee

Selim M. Erhan (Chair)Oil Process IndustriesDecatur, IL

Brajendra K. Sharma (Vice Chair)Illinois Sustainable Technology Center,University of Illinois at Urbana-ChampaignChampaign, IL

Daniel B. Garbark (Secretary)BattelleColumbus, OH

Helen L. Ngo (PSC)Eastern Regional Research CenterAgricultural Research Service, USDAWyndmoor, PA

Fluid Film Bearings TechnicalCommittee

Troy Snyder (Chair)The University of AkronAkron, OH

Balint Pap (Vice Chair & Secretary)Safran Transmission SystemsColombes, France

Bruce Fabijonas (PSC)Kingsbury Inc.Philadelphia, PA

Xuan Ma (Vice PSC)Harbin Engineering UniversityHarbin, Heilongjian Province China

Gears and Gear LubricationTechnical Committee

Jeffrey Ewin (Chair)Naval Air Systems CommandPatuxent River, MD

Weixue Tian (Vice Chair)ExxonMobil Research and EngineeringAnnandale, NJ

Nikhil Murthy (PSC)US Army Research LaboratoryAberdeen Proving Ground, MD

Grease Technical Committee

Wenyang Zhang (Chair)Tesla, Inc.Sunnyvale, CA

Cindy Liu (Vice Chair)Klüber LubricationLondonderry, NH

H. Scott Crawford (PSC)Primrose Oil CompanyDallas, TX

Lubrication FundamentalsTechnical Committee

Mihir Patel (Chair)Chevron LubricantsRichmond, CA

Jodie Nelson (Vice Chair)American Refining Group, Inc.Bradford, PA

Nicole Döerr (PSC)AC2T research GmbHWiener Neustadt, Austria

Brendan Miller (Vice PSC)Chevron Oronite Company, LLCRichmond, CA

Materials Tribology TechnicalCommittee

Brandon Krick (Chair)Florida State UniversityTallahassee, FL

Tevis Jacobs (Vice Chair)University of PittsburghPittsburgh, PA

John F. Curry (PSC for MaterialsTribology)Sandia National LaboratoriesAlbuquerque, NM

Mark A. Sidebottom (PSC forTribochemistry – Materials &Nanotribology Joint Session)Miami UniversityOxford, OH

Mary Makowiec (PSC for 2D Materials –Materials & Nanotribology JointSession)Pratt & WhitneyEast Hartford, CT

Alison C. Dunn (PSC for Tribology ofBiomaterials – Materials &Biotribology Joint Session)University of Illinois at Urbana-ChampaignUrbana, IL

Brandon Krick (PSC for Tribology ofBiomaterials – Materials &Biotribology Joint Session)Florida State University Tallahassee, FL

Metalworking Technical Committee

E. Jon Schnellbacher (Chair)Formulas & Solutions, LLCAllen Park MI

Bridget Dubbert (Vice Chair)Engineered LubricantsMaryland Heights, MO

Jill Myers (PSC)The Timken CompanyNorth Canton, OH

Nanotribology Technical Committee

Zhijiang (Justin) Ye (Chair)Miami UniversityOxford, OH

Prathima C. Nalam (Vice Chair)University of BuffaloBuffalo, NY

Mohammad Vazirisereshk (PSC)University of California, MercedMerced, CA

Nikolay Garabedian (Vice PSC)Karlsruhe Institute of TechnologyKarlsruhe, Germany



Mehmet Z. Baykara (Vice PSC)University of California, MercedMerced, CA

Nonferrous Industry Council

Joseph Cepec (Chair)Allegheny Petroleum Products CompanyWilmerding, PA

Andrea Lynn Knopp(Secretary/Treasurer)Lightstone Generation – Gavin PlantCheshire, OH

Tom Oleksiak (PSC)Quaker HoughtonConshohocken, PA

Power Generation Industry Council

Jatin Mehta (Chair)Fluitec InternationalJersey City, NJ

Peter Dufresne (Co-Chair)WLUCalgary, Alberta, Canada

Matthew Hobbs (Vice Chair & PSC)EPTCalgary, Alberta, Canada

Salvatore Rea (PSC)LANXESS CorporationPerkasie, PA

Rolling Element Bearings TechnicalCommittee

Trevor Slack (Chair)American Roller Bearing CompanyMorganton, NC

Nikhil Londhe (Vice Chair)The Timken CompanyNorth Canton, OH

Daniel Merk (Secretary)Schaeffler TechnologiesBavaria, Germany

Bryan Allison (PSC)SKF AeroengineClymer, NY

Isaac Daulton (Vice PSC)AFRL Turbine Engine DivisionEngine Mechanical Systems BranchAFRL/RQTMWPAFB, OH

Hannes Grillenberger (REB DiscussionRoundtable)Schaeffler Technologies AG & Co. KGHerzogenaurach, Germany

Seals Technical Committee

Khalid Malik (Chair)Ontario Power GenerationPickering, Ontario, Canada

Hongmei Zhao (Vice Chair)The Lubrizol CorporationWickliffe, OH

Bo Tan (Secretary & PSC)University of KentuckyLexington, KY

Surface Engineering TechnicalCommittee

Harpal Singh (Chair)Sentient Science CorporationWest Lafayette, IN

Suvrat Bhargava (Vice Chair)TE ConnectivityMiddletown, PA

Kora Farokhzadeh (PSC)Bruker Nano SurfacesSan Jose, CA

Nikhil Murthy (Vice PSC)U.S. Army Research LabAberdeen Proving Ground, MD

Auezhan Amanov (Vice PSC)Sun Moon UniversitySunmoon-ro, Asan, South Korea

Synthetic Lubricants and HydraulicsTechnical Committee

Robert Davidson (Chair)Afton Chemical CorporationRichmond, VA

Lauren Huffman (Vice Chair)The Dow Chemical CompanyMidland, MI

Ryan Fenton (PSC)BASF CorporationTarrytown, NY

Patti Cusatis (Vice PSC)BASF CorporationTarrytown, NY

Tribotesting Technical Committee

Gordon G. Krauss (Chair)Harvey Mudd CollegeClaremont, CA

Jun Xiao (Vice Chair)Rtec Instruments, Inc.San Jose, CA

Oluwaseyi Ogunsola (PSC)Shell Technology CenterHouston, TX

Pradeep Menezes (Vice PSC)University of Nevada, RenoReno, NV

Wear Technical Committee

Arnab Ghosh (Chair)EtaGenIdaho Fall, ID

Chinpei Wang (Vice Chair)Cummins, Inc.Columbus, IN

Mathieu Renouf (Secretary)CNRSUniversité De MontpellierMontpellier, France

Yan Zhou (PSC)Houghton InternationalOak Ridge, TN

Ali Beheshti (Vice PSC)George Mason UniversityFairfax, VA

Wind Energy Technical Committee

Manish Patel (Chair)NanoTech Industrial SolutionsLake Charles, LA

Ramesh Navaratnam (Vice Chair)Patech Fine ChemicalsTaipei City, Taiwan

David Pack (PSC)Pack Consulting ServicesKaty, TX

Student Posters

Azhar Vellore (Chair)University of California, MercedMerced, CA



early career posters

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