Comparative Studies of the Tread Brake Dynamometer Between Dry and Wet Conditions

초록

This paper discuss comparative strudies of the tread brake dynamometer between dry and wet conditions. The brake dynamometers are widely used to evaluate the performance of brake systems and test the brake parts under various environments (weight, velocity, brake force, wet-dry conditions). In the process of the brake stops, the friction coefficients between dry and wet conditions must not deviate from each other by more than 15% under the same conditions. Experiments on the brake dynamometer for the high speed train are shown to illustrate the comparative studies of the tread brake dynamometer between dry and wet conditions with initial vehicle speed at 200 [km/h] considering the 920 [mm] wheel diameter.