Innovative 2-Disk Test Instrument to Study Friction Under Slip Rolling Conditions

Highly concentrated slip-rolling contacts face demands for light-weight design and friction reduction. FZG or FE8 are well-established test rigs for slip rolling, but deliver results for single tribological quantities. The tribological profile of a tribocouple established in one endu¬¬rance slip-rolling 2Disk? test of ten million cycles are composed of different simultaneously recorded properties: a) Evolution of coefficients of friction evtl. visualizing running-in, b) Proving slip-rolling resistance against fatigue, c) Wear coefficients under a pre-selected Hertzian contact stress, d) Load-carrying capacity of the tribocouple, when endurance tested at different Hertzian contact pressure (P0max= 2.25; 2.91; 3.8; 4.2 GPa) and/or tribofilm formation through electrical contact resistance.

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