Surface friction testing apparatus

G - Physics – 01 – N

Patent

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G01N 19/02 (2006.01)

Patent

CA 2527925

Surface testing friction apparatus comprises a trolley (1) and an inclined ramp (15). The trolley and ramp are arranged such that a slider (12) on the trolley comes into contact with the surface (22) during a test run over a surface, the friction coefficient of which is to be determined, the mass of the trolley (1) length (L) and a height (H) of the ramp (15) are selected such that for a slider of given properties, materials and dimensions the critical film thickness for a wet surface is approximately 2~m.

Appareil permettant de déterminer une friction de surface, qui comporte un chariot (1) et une rampe inclinée (15). Le chariot et la rampe sont disposés de manière telle qu'un élément de glissement (12) monté sur le chariot vient en contact avec la surface (22) lors d'un passage d'essai de l'appareil sur une surface dont le coefficient de friction doit être déterminé. La masse du chariot (1), la longueur (L) et la hauteur (H) de la rampe (15) sont choisies de manière telle que pour un élément de glissement ayant des propriétés, une matière et des dimensions données, l'épaisseur du film critique pour une surface mouillée est d'environ 2 ?m.

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