From the early tribological studies of Leonardo da Vinci to Amontons’ law, friction has been shown to increase with increasing normal load. This trend continues to hold at the nanoscale, where ...

This video demonstrates the ASTM D1894 coefficient of friction test on an ADMET eP2 controller. ASTM D1894 is a testing standard employed for determining the friction of plastic film and sheeting.

Figure 1: Fiber displacement due to insufficient adhesion force (left) and simplified force equilibrium on winding surface (right). Photo Credit, all images: IVW Leibniz-Institut für Verbundwerkstoffe ...

Tests of a proposed friction-factor equation have shown it to be accurate for calculating pressure loss in turbulent flow for a pipeline transporting a non-Newtonian fluid, such as most crude oils and ...

A new equation for accurate approximation of the Moody friction factor in the general gas-flow equation better approximates a wide range of Reynolds numbers than previously published equations. Other, ...