Invited Guest Speakers
Dr. Seong Kwan Rhee - SKR Consulting LLC
Influence of Brake Rotors on Friction, Wear and NVH
Brake friction, wear and NVH are influenced by friction materials, rotors, calipers, brake system assembly and humidity. The influence of friction materials on brake friction, wear and NVH has been widely studied and reported. However, the influence of the rotors has not been well studied and reported in spite of the fact that the rotor can wear at the same rate as friction materials, measured in weight. This presentation will address the influence of rotor metallurgy and design on friction, wear, NVH and brake emissions.
Dr. Rhee received his Ph.D. degree in Materials Science from the University of Cincinnati. He is also currently Executive Technical Advisor (Brake/friction materials), Hyundai Mobis R&D, KBAutosys, Korea and other companies around the world. During the span of his career he held several key senior management positions in R&D/Engineering, product development, commercialization, plant operations and general management; expertise in friction materials (pioneer of asbestos-free friction materials; inventor of Friction Materials Formulation Guidelines), brakes and brake NVH. To his credit he held 15 US patents, inventor of Semi-met, published over 90 scientific/technical papers, co-edited 3 books.
Prof. Dr. George Ostermeyer - Head of Institute of Dynamics and Vibrations, University of Braunschweig, Germany
On the origin of friction in brakes
Independent of type, size and complexity of brake systems the friction force is generated in the interface of brake pads and their frictional counterpart, usually a disc. This frictional contact is often characterized by a Coulomb like mu-value for the computational design for brake performances and NVH. But in the last decades this frictional interface dynamics came into the focus of research and development of the break industry. This interface generates time- and history dependent friction forces, wear and wear dust dynamics with an essential influence on the computational generated results on brake dynamics and stability, NVH, performance and lifetime. In the pad industry the friction interface engineering starts to be a powerful tool for generating smooth, calm and clean friction couples in brakes.
- 1984 : PhD- thesis on unilateral constraints in mechanics
- 1988 : Habilitation (postdoctoral lecture qualification) on rail- wheel contact
- 1988 – 1992 : Chief engineer at Volkswagen AG, Wolfsburg
- 1992 – 2000 : Professor of mechanics and friction physics at University of Berlin
- 2000 – present : Professor of dynamics and vibration, head of Institute of Dynamics and Vibrations (IDS), University of Braunschweig
Special Research Areas : Green Brake Technologies, Tribology of High load friction pairs
Harald Abendroth - Chairman, EuroBrake
Status Report ISO Sub-working Group "Brake Linings and Friction Couples"
Brake / friction material testing consumes a major part of development costs and time. The global character of car business requires global test specifications. An overview will be given on new standardization projects and existing standards under review.
Activitities equally relate to passenger car and commercial vehicle brakes, discs and drums. New activities pay specific attention to regions which were not sufficiently integrated in previous standardization efforts like Asea and South America.
About 40 years of experience in brake/ friction engineering. Development of worldwide standard test equipment and test procedures. Numerous presentations /publications at international conferences. Cosultant, chair of EuroBrake 2016 , chair of ISO Sub-working Group “Brake Linings and Friction Couples”
Prof. Dr. John David Fieldhouse - Visiting Professor, the University of Bradford
Looking at Brake Design and Squeal Issues.
The presentation compares disc brake designs – small car to heavy commercial - and shows that there is little difference in the overall principal characteristics related to noise propensity. It concentrates on common noise issues and the similarity of design features. Disc/pad interface geometry is introduced and as a result it demonstrates how, and why, chamfers do influence noise propensity. In addition the pad “center of pressure” is considered, its leading position being another common occurrence during braking and a source of noise generation.
John is an apprentice trained engineer with 19 years industrial experience as a design and development engineer. He obtained his first degree at the University of Leeds and after leaving industry for an academic life completed his PhD at the University of Huddersfield. His Thesis title was “The Investigation of Brake Noise Using Holographic Interferometry”. His responsibilities at Huddersfield included design and automotive engineering development. He established what was recognized as one of the best academic engineering design studios in the UK and was awarded National Teaching Fellowship status. He also established an automotive engineering teaching and research laboratory, which included an internationally recognized braking research laboratory, and in 2010 he was appointed Professor of Automotive Engineering.
He has published over 150 conference and journal articles related to brake noise & judder, the teaching of engineering design and the education of automotive engineering “fit for purpose”.
After retiring from Huddersfield he joined the University of Bradford where he is active in developing their brake research laboratory.
His current interests continue with brake noise related problems but his growing passion is encouraging industry to become more involved in the international education of automotive engineers.
He is a core member of FISITA Education Committee where he introduced, and is responsible for the organisation of, their technical sessions and discussion forums at FISITA Congress (in Busan, South Korea in 2016) – their focus being industry/academic partnership and best practice in teaching. He is also an active member of the IMechE Automotive Division Committee where he represents FISITA and again promotes the education of automotive engineers. He is also on the Advisory Boards of the SAE Brake Colloquium and also EuroBrake.
Eros Sales - Global friction application director, ITT Motion Technologies
OEM quality requirement for friction material and influence of rotor composition on friction material characteristics
An increased numbers and types of control and requirements from development phase to normal production have been introduced in OE friction material to improve the level of quality. Capability and reduction of the tolerances are requested more and more by OEM and caliper makers. But several characteristics of friction material are influenced by other brake system components as for example rotors and the introduction of their more deep control and their more strict tolerances can reduce the risk of warranty return from the market.
ITT has developed a protocol for rotor characterization and the analysis of different localized production of rotors used in the same platform have put in evidence big differences in Eigen frequency, chemical composition, hardness, coefficient of friction… as consequence an increase of market complain
Degree in chemistry Since 1986 working in itt friction (closed to 30 years experience in friction development) in r&d departement First as compounder, followed as global project mangement director and now as friction global application director. I am living in italy closed to the alpes and I like Climbing and nordic sky
