The effect of surface roughness and contaminant on the dynamic friction of porcelain tile.

摘要: Abstract Surface roughness affects friction, but it is not clear what surface characteristics are better correlated with friction. The average of the maximum height above mean line in each cut-off length (Rpm) and arithmetical slope (Δa) had highest correlation dynamic friction coefficient a previous study. study was expanded to two different footwear materials four contaminants on porcelain tile current investigation. results showed that decreased as interface speed glycerol content contaminant were increased due hydrodynamic lubrication effect. Δa for most test conditions neolite. For Four S rubber, appeared have parameters related void volume at 30% content, 70 85% contents, peak valley distance 99% content. A good indicator slip resistance probably should consist representing slope, peak-to-valley coefficients determined by system parameters.