Guest Speakers

Invited Lecturer

Prof. Dr.-Ing habil. G.P. Ostermeyer

Head of Institute of Dynamics and Vibrations, Technische Universität Braunschweig, Germany

Friction, Wear and Emissions in Brakes

Brakes are tribological high-load contacts. Such contacts are characterized by the fact that the wear provides material in the friction contact, which can generate additional tribologically active contact surfaces there. In addition to the natural contact areas, wear dust in the boundary layer forms temporary contact areas. These contribute significantly to the resulting time depending friction power.

Following investigations into friction dynamics, the demand for time-resolved predictions of wear, and in particular the wear dust load during braking is becoming increasingly important. High-precision measurements and swarm measurement devices have shown that the wear and particle emission intensity also has its own time dynamics. Cavities in der boundary layer are filled once and then emptied again. These reservoir dynamics seem to be characteristic for the output of wear dust in high load contacts in transient operations.

Prof. Dr. Peter Filip

Professor, Department of Mechanical Engineering and Energy Progresses Southern Illinois University at Carbondale, Carbondale, Illinois, USA

Friction Brake Materials

Paradigm shift towards hybrid, electric and autonomous vehicles will require adjustments in design strategies related to “new friction materials” for brakes. It is expected that the “current friction brake materials” will still be used, however, and will represent relevant share of the market. This presentation therefore addresses formulation and testing strategies relevant to both (current and new) brake material styles.

Major differences and important factors influencing their performance defined here as the friction level and stability, wear and emission of non-exhaust pollutants, as well as the propensity to vibration and noise generation will be addressed. Concentration will be focused on polymer matrix composite materials and the most relevant brake material types.

Prof. Dr. Philippe Dufrénoy

University of Lille, France

Key role of thermomechanics on friction brakes performance (wear, noise...)

Temperature is a major known parameter in the design of braking system. However, temperature cannot be dissociated from the corresponding contact localizations induced by thermomechanics. Thermal dilatations inevitably lead to contact localizations closely related to material transformation, wear, etc. Beyond the temperature, it is the knowledge of contact localization mechanisms that is important in understanding performance.

Recent improvements in numerical simulations and thermal instrumentation allow for better determination of contact localizations, at macro and meso scale, both from the point of view of observation (experimental instrumentation) and prediction (thermomechanical modeling).

Examples of applications of these improvements will be presented concerning the reduction of wear and the prediction of judder and squeal thanks to the knowledge and control of these localizations.

Consideration of thermomechanical mechanisms, at several scales, is crucial as a means of improving the performance of braking systems.

Invited Tutorial

Gregory M. Vyletel, Ph.D. - Exec. Director

Brake Engineering and Product Management First Brands Group

Fundamentals of Tribology - A Brake Engineering Perspective

Guest Speaker

Rick Kaatz

Vice President and General Manager of KBAutosys America, an OE brake pad supplier headquartered in S. Korea.

SAE Brake Linings Standards Committee Update

Rick Kaatz, chair of the Brake Linings Standards Committee, will give an update of activities lead out of the US to improve standards, tests, and requirements for brake linings and brake pad assemblies. Topics include critical dimensions, standard tests for characterizing friction output, compressibility testing, thermal growth and swell, corrosion related topics, and other areas of interest.

Krisda Utamote

President, Electric Vehicle Association of Thailand (EVAT) production of electric vehicles in the country.
Director Corporate Communications, BMW Group Thailand

EV Transition in Thailand

Today, greenhouse gases and global warming as well as PM 2.5 are a serious problem affecting the environment and people all over the world. Such phenomena cause natural disasters and destroy the lives and health of people everywhere. This is partly due to the use of internal combustion vehicles that emit pollutants. Therefore, the change relating to the use of electric vehicles is playing a major role in the transformation of the transport sector, whether it be by land, sea, or air.

As for Thailand, the National Electric Vehicle Policy Committee has been established to determine the direction of promoting electric vehicles by reducing the use of combustion engine vehicles and pushing the use of electric vehicles. The meeting was aimed at initiating a ‘Low Carbon Society’ and for Thailand to become a global production base for electric vehicles and important parts. This session aims to provide a summary of the national ZEV targets as well as an overall direction to promote the use and production of electric vehicles in the country