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http://dx.doi.org/10.9725/kstle.2014.30.4.240

Influence of Disk Mass with regard to Frictional Characteristics of Brake Disk for Rolling Stock  

Jung, Jong Rok (Graduate School of Railroaod, Seoul National University of Science and Technology)
Ko, Eun Sung (Graduate School of Railroaod, Seoul National University of Science and Technology)
Lee, Hi Sung (Graduate School of Railroaod, Seoul National University of Science and Technology)
Publication Information
Tribology and Lubricants / v.30, no.4, 2014 , pp. 240-245 More about this Journal
Abstract
Low alloy heat resistant brake disk and sintered brake pad are applied to mechanical brake system for the speed-up of urban rapid transit. In this research, we analyzed how the frictional characteristics between brake disk and pad are influenced by the disk mass. At a high disk mass, the friction stability was the lower value as a result of the lack of tribofilm formation at the disk surface. Wear rates of friction materials showed the higher value at a low disk mass and wear rates of 10 mm and 15 mm showed the similar level. Average friction coefficient was the lower value at the 10 mm disk thickness and range of variation of average friction coefficient was also the smaller value at the 10 mm disk thickness. However, there were no significant changes in the friction coefficients under any of test conditions. Surface roughness of a disk showed the highest value at the 5 mm disk and surface roughnesses of 10 mm and 15 mm showed the similar level. As a result, friction characteristics of disk mass influenced the friction stability, as well as the wear rate of friction pad and disk, but not the friction coefficient.
Keywords
brake disk; pad; frictional characteristics; disk mass;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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