The University of Trento is placed in a location which has always been the connecting point between the Mediterranean world and Central Europe. It has always paid attention to joining forces and creating complementarities with Italian and foreign institutions and organizations.
In little more than 50 years of history, the University has been characterized by the intense mobility of students and lecturers, aimed at a constant improvement of research and didactics. The international dimension can be considered one of the features through which the University of Trento can reach prominent positions in Italian university ranking.
16,000 students, 670 people between lecturers and researchers and 500 people in the non-academic staff: these numbers reflect the situation of a University able to offer an ideal study and research environment aiming at meeting the wishes of each person. In Trento everything is within reach: libraries, university canteens, laboratories, cultural activities and specialized services.
Students who decide to study at the University of Trento can enjoy the benefits of an area characterized by a high quality of life, a widespread welfare and a beautiful, natural environment where visitors can have a good time in every season.
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EB2021-EBS-005
Poster + Pitch
Detail
Ms. Ana Paula Gomes Nogueira, University of Trento, ITALY
Mr. Stefano Candeo, University of Trento, ITALY
Dr. Eng. Mara Leonardi, Brembo, ITALY
Prof. Dr. Giovanni Straffelini, University of Trento, ITALY
Tribological transitions are frequent when two new surfaces are placed in contact under load and sliding conditions. These transitions usually occur not only by the changes on the surface roughness, but also by the characteristics of the third body formed between the mating surfaces. The present work investigates the tribological behavior and the related airborne particles emissions of a Cu-free brake friction material during the initial stage of braking (bedding), starting from a virgin material. The tribo-tests have been conducted using a reduced-scale dynamometer, and the number distribution of the airborne particles was simultaneously measured by an Optical Particle Sizer (OPS). The tests were stopped with 25, 50, 100 and 130 brake events in order to analyze the surface of the friction material. Bedding showed two distinct stages regarding the friction and emissions behaviors. The first is characterized by a pronounced increase in both friction coefficient and particles emissions, achieving the highest value around 35 brake events. Successively, a smooth decrease is observed until reach the steady-stage of the friction coefficient. The friction layer formed on the surface of friction material seems to be correlated with the tribological and emissions results; in which the achievement of the state-state on the friction coefficient is coincident with the progressive compaction and area-increase of the secondary plateaus.
EuroBrake 2021
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