Jaafar, Talib Ria and Othman, Eliasidi Abu and Selamat, Mohd Asri and Kasiran, Ramlan
(2016)
On-Road Braking Performances of Semi-Metallics Brake Friction Materials Developed through Powder Metallurgy Process.
Journal of Engineering Science and Technology, 12.
pp. 27-41.
ISSN 1823-4690
Abstract
Brake system is used to slow down and finally stop a motor vehicle and friction
material is one of the components of the brake system. In this study, eight formulations of
brake friction materials were developed through powder metallurgy processes. The
samples were subjected to physical, mechanical, friction and on-road performance tests
to investigate their mechanical and tribological characteristics and on-road braking
performances. The data were then analysed to study the relationship between the
tribological characteristics and the on-road braking performance. Test results signify
that there are no simple correlations among the physical, mechanical and tribological
characteristics of semi-metallic brake friction materials. It was also noticed that there
are no simple correlations between the friction characteristics and road performance
results. Normal and hot frictions of all the eight samples comply with requirements
specified by Automotive Manufacturer Equipment Companies Agency, USA. However,
on-road performance test results show that only six out of the eight formulations do
comply with requirements of United Nation Economic Commission of Europe Regulation
13. Therefore, it could be concluded that on-road performance test is the ultimate
measure in deciding which newly-developed formulations could be used on the road.
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