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Minimum gap coordinate above the tribometer pin compared to R p as a function of the disc velocity.

Minimum gap coordinate above the tribometer pin compared to R p as a function of the disc velocity.

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A considerable number of surface texture investigations is based on pin-on-disc tribometers. This work shows that a crucial role in the reproducibility of the results, e.g. Stribeck curves, is played by the geometry of the pin surface. The investigation is based on an elastohydrodynamic model of a pin-on-disc tribometer which is validated with expe...

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... the transition point of the purely EHL to the mixed lubrication regime can be defined as the critical disc velocity U c at which the minimum gap coordinate above the pin min (h 0 ( x)) is equal to R p . This is visualized in Figure 9 with the results of the meltdown gap height method. ...

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