The discontact ratio in sliding friction is markedly influenced by kinetic factors; mass distribution, elasticity, applied load, sliding velocity, etc.
Friction, which is one of the factors, is known to be very much dependent on the surface characteristics of materials. For-this reason, the discontact ratio should be de-pendent to a marked degree on the character-istics of the sliding materials.
To confirm the above supposition, the dis-contact ratio was measured under same sliding conditions for two different sets of materials. The results have shown that the sliding characteristic of materials has a marked in-fluence on discontact ratio. The better the sliding contact, the smaller the discontact ratio.
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