MEASUREMENT OF THE DISC-PAD FRICTION COEFFICIENT FOR MECHANICAL BRAKES USING DIRECT AND INDIRECT METHODS

KIM, Y.-G.; KIM, S.-W.; PARK, C.-K.; PARK, T.-W.; KIM, Y.-M.

doi:2011.12.1.51

International Journal of Automotive Technology > Volume 12(1); 2011 > Article

Automobile Chassis & Vehicle Dynamic

International Journal of Automotive Technology 2011;12(1): 51-58.
doi: https://doi.org/10.1007/s12239-011-0007-y

MEASUREMENT OF THE DISC-PAD FRICTION COEFFICIENT FOR MECHANICAL BRAKES USING DIRECT AND INDIRECT METHODS

Y.-G. KIM¹, S.-W. KIM¹, C.-K. PARK¹, T.-W. PARK², Y.-M. KIM²

¹Korea Railroad Research Institute
²Ajou University

ABSTRACT

It is necessary to guarantee the proper brake force to stop a train safely in a limited distance and o adjust its speed. Currently, most trains are run by electrical power and have a combined electrical and mechanical (friction) braking system. The mechanical brake force is determined by many parameters, such as the friction coefficient of the brake disc and pad, the pressure in the brake cylinder, the brake cylinder

Key Words: Disc brake, Friction coefficient, Brake force, Clapping force, Gradient resistance, Korean high-speed train (HSR-350x).

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