2023 TFC/E-Mobility Conference Keynote Speakers

Monday, November 13, 2023
All times represent US Central Time
Plenary Session #1
8:00 am – 9:00 am
Salon EFGH | Cleveland Marriott Downtown at Key Tower Salon

Surfaces in Lubrication: A Multiscale Analysis
Juliette Cayer-Barrioz, CNRS Research Director, STMS/LTDS, Ecole Centrale de Lyon (USA)

Reducing friction dissipations is a promising way to contribute to the global welfare. To do so, the first approach is to use low-viscosity fluids—leading to thinner and thinner filmsand the second is to modify the surfaces in contact. We illustrate here the combined approach consisting in investigating the surface effects on friction in contacts lubricated with low-viscosity fluids over all the lubrication regimes. We first present the IMOTEP research platform that allows us to carry out a multiscale analysis of lubricated contacts from full-film lubrication regimes to boundary friction regimes. Covering 11 decades of sliding velocities and contact pressure from 10-10 to 10 m/s and up to few GPa [1-4], it combines simultaneous measurements of contact forces with film thickness distribution for controlled contact kinematics. Surface modification is addressed in terms of topography as well as physico-chemistry.

The first part of this keynote presentation shows how surface roughness bridges the friction scale gap from molecular to multi-asperity contacts. For a simple frictional system exclusively undergoing structural aging, we explained how the macroscopic friction response resulted from the interplay between the contact roughness via the formation of contact junctions, and the molecular motion within adsorbed monolayers on the surface, through coupled experimental and computational approaches with a unified theoretical model [5]. We were able to provide insights on the friction force decay, after the stiction peak, at the onset of sliding to a steady-state value over a few nanometers of sliding distance. The evolution of number of cross-surface attractive physical links, within contact junctions, was correlated to this memory distance.

The second part deals with the tribological behavior of adsorbed polymer layers on surfaces over all the lubrication regimes. The interactions between the metallic surface and the polymer additive induced the formation of a nanometer thick boundary layer, highly elastic with a shear elastic modulus of 90 MPa under a 50 MPa contact pressure [6]. Interferogram analysis showed that patches of adsorbed film well covered the surface at low velocity. At high velocity, the film thickness followed the elastohydrodynamic prediction. The existence of this boundary film resulted in friction reduction, shifting the mixed/EHL regime transition towards lower velocities. In hydrodynamic lubrication regime, two regimesthermal versus non-thermalcompeted depending on the kinematics. The role of non-Newtonian fluid rheology under high shear was also investigated [7].

Speaker Bio
Juliette Cayer-Barrioz, graduated with degrees in physics and mechanical engineering from the University of Grenoble in 1998 and Ecole Centrale de Lyon (ECL) in 2000, respectively, before obtaining her Ph.D. in materials science from ECL in 2003 and her Habilitation in Mechanics in 2011. Since 2005, she has been associated with the CNRS. Her research activities at the Laboratoire de Tribologie et Dynamique des Systèmes (LTDS) in Ecole Centrale de Lyon focus on surface phenomena and dynamics of confined lubricated interfaces. Her multidisciplinary approach—based on unique experimental devices developed at the LTDS—combines physics, interfacial chemistry and mechanics, rheology and friction. After an eight-year contribution to the Laboratoire d’Excellence Manutech-Sise, she is now a member of the French National Committee of the CNRS in mechanics and serves as one of four editors of the STLE-affiliated Tribology Letters journal. Her teaching activities at ECL, and beyond, address the physics and chemistry of interfaces and the rheology of complex media.

Plenary Session #2
1:00 pm – 2:00 pm
Salon D | Cleveland Marriott Downtown at Key Tower Salon

STLE Trends Report: Opportunities in the Future
Neil Canter, President, Chemical Solutions (USA)

This presentation focuses on the recent release of STLE’s 2023 Report on Emerging Issues and Trends in Tribology and Lubrication Engineering and discusses key trends that are and will be impacting the tribology and lubrication field including supply chain, sustainability, electrification, manufacturing, medical/health and government regulations. These issues portend a future that will be full of opportunities, particularly for those individuals just entering the field. Sustainability will be prominently discussed in this presentation because it is impacting how end-users of lubricants are operating. Electrification is a term that defines the move towards decarbonization—encompassing applications beyond just electric vehicles. Manufacturing focuses on the benefits tribology can provide through efficiency improvements that reduce emissions and boost sustainability. Medical/health includes ways tribology is in use to help improve the way patients deal with health issues. Government regulations continues to be an important factor in determining what lubricants can be used and how they should be used. The case will be made that the future for tribology is bright and demand will increase for tribologists because of the growing need to improve productivity and efficiency through reducing emissions and saving energy.

Speaker Bio
Dr. Neil Canter is an STLE Fellow and an STLE Certified Metalworking Fluids Specialist (CMFS)™, with more than 35 years of experience working in the lubricants industry. He received his doctorate in chemistry from the University of Michigan in 1983 and his bachelor’s of science in chemistry from Brown University in 1978. Canter runs his own consulting company, Chemical Solutions, specializing in commercial development, marketing, product development and regulatory support for the lubricants industry. Canter is a member of STLE, the American Chemical Society (ACS), and the Society of Automotive Engineers (SAE). He is a contributing editor responsible for writing the monthly Tech Beat column in STLE’s TLT magazine. He is also a member of STLE’s Metalworking Fluid Education & Training Committee, STLE Education Committee, and the program chair for the STLE Philadelphia Section. Besides providing technical and commercial support, he is also the host of STLE’s podcast series: “Perfecting Motion: Tribology and the Quest for Sustainability.”

Tuesday November 14, 2023
Joint Plenary Session
8:00 am – 9:00 am
Salon EFGH | Cleveland Marriott Downtown at Key Tower


Challenges of Selecting the Correct Electric Vehicle Driveline Fluid
Troy Muransky, Lead Materials Engineer, American Axle & Manufacturing (USA)


In this new, ever-changing world of electric vehicles, the latest hardware design trends require the fluid to lubricate the gearbox while also cooling the motor and inverter. Because of these new unique requirements, the driveline fluid selection can be very difficult. Many of these new properties do not have established test methods, nor are their impacts completely understood. These properties would include high-speed durability, aeration and foaming, copper corrosion, E&M field, material compatibility, oil/water separation, oxidation stability, and dielectric strength. This keynote presentation will highlight the hardware supplier’s perspective of challenges and testing gaps associated with each property.

Speaker Bio
Troy Muransky is lead materials engineer for American Axle & Manufacturing. He received his bachelor of science degrees in chemistry and chemical engineering from the University of Michigan and Wayne State University, respectively. His 17 years in the automotive industry include various roles in Materials, Process, and Environmental Engineering, as well as Analytical Chemistry, Quality, and Laboratory Management. Troy’s technical expertise is in lubricants, surface treatments, and coatings with focus on proper material selection, testing, troubleshooting, and launch support for driveline applications. He currently serves as chair and ASTM D7452 (L-42) reviewer for the Lubricant Review Institute (LRI) SAE J2360 Gear Oil Approval Committee, and is also an active member of ASTM, SAE, and STLE.

Plenary Session
1:00 pm – 2:00 pm
Salon EFGH | Cleveland Marriott Downtown at Key Tower

Development of Power Dense and Energy Efficient Bearings to Address the Needs of Modern Machinery
Michael Kotzalas, Director of Global Customer Engineering, The Timken Company (USA)

The drive for carbon neutrality has created demand for energy efficiency in all aspects of our industrialized world. Prior generations of machine designers were more focused on reliability and performance, which is still a requirement today. However, energy efficiency and reduced carbon footprint have now become just, or even more, important in their design tradeoff studies. To address this shift in priorities, the rolling bearing industry--and industry developed over a century ago to eliminate friction and enable the first Industrial Revolution-- is in focus. Bearing designers have relied on tribology to find these solutions. This has been through studying the impact of lubricant rheology and film formation capabilities, contact surfaces geometry, and material wear characterization to meet customer requirements. These enabling technologies will be discussed during this presentation and real-world examples will be used to highlight how they have been deployed.

Speaker Bio

Michael Kotzalas is currently the Director of Global Customer Engineering for The Timken Company, responsible for the application and service engineering activities in all market segments. Working for Timken since 1999, he has worked his way through the corporate R&D, product engineering and customer engineering groups as he progressed through the company.  He received his bachelor’s, master’s, and doctorate degrees in mechanical engineering from The Pennsylvania State University and specialized in rolling element bearing technologies during his graduate work.

Mike is an active member of ASME, STLE and ABMA, where he has served as chair of the ASME Tribology Division, STLE’s Wind Energy Tribology Technical Committee, an Associate Editor for STLE’s Tribology Transactions journal, and ABMA Chair of ISO TC4/SC9 for standards involving tapered roller bearings, respectively. He has published 16 peer-reviewed papers in journals and conference proceedings and co-authored the fifth edition of the two-volume textbook, Rolling Bearing Analysis. He has received the ASME Tribology Division’s Best Paper Award, STLE’s Walter D. Hodson Award (two times), SAE/AEM’s Outstanding Young Engineer Award in the Off-Highway Industry, and Field Best Presentation at the World Tribology Congress (WTC). He also holds two U.S. patents on cylindrical roller bearing designs and has previously served as an instructor for the ABMA short courses: Advanced Concepts of Bearing Technology and Essential Concepts of Bearing Technology.