Measurements of ice-ice friction coefficients

Abstract

Friction experiments were done to measure the kinetic friction coefficient between ice and ice at velocities from 10^-4 to 10^-1 m/s and temperatures from-1 to-27°C. It was found that at all temperatures tested, the ice-ice friction coefficient increased with the decrease in velocity;e.g., from 0.01 at 10^-1m/s to 0.15 at 10^-4m/s at -12°C, and that the friction coefficient showed minimum values at -5°C. The stick-slip phenomenon was observed at lower velocities than 5×10^-4m/s(-12°C)and 10^-3 m/s(-27°C). No dependence on the load, that is the normal stress applied between ice and ice, was noted in the range tested in the experiment, 2.9 to 6.7 kPa. Most of the obtained results can be explained by the theory of lubrication of water produced by frictional heating.