Thermal analysis and performance testing of heavy load truck composite brake linings

Abstract

One of the most important variables that determine the braking performance of heavy-duty trucks is the high temperature increases in the brake components. In this study, the effects of high temperatures in brake lining compositions were investigated using thermogravimetric analysis (TGA). Furthermore, dynamometer tests and SEM analysis were performed. Three different compositions, which are called standard, fly ash and sisal fiber mixture, were compared with existing commercial heavy-duty truck brake lining. The thermal behavior of samples analyzed in TGA machine compared to the weight losses with increasing temperatures until 900 °C. Dynamometer tests which simulated the real part production and vehicle tests were realized in brake lining supplier. Finally, with the SEM analysis, both normal and worn surfaces were analyzed and reasons for wear surfaces were investigated. The findings suggest that there is a high potential in fly ash mixture to apply in commercial trucks applications which occurs at very high temperatures and is very suitable for environment and cost reduction points. © 2022 Walter de Gruyter GmbH, Berlin/Boston.