State criterion of rubber abrasion

In general, the number of revolutions corresponding with the critical point to transform the wear state from unsteady to steady, is a constant under otherwise identical conditions. Hence, it can be considered as a state criterion of rubber abrasion, then... 

Figure 11. State criterion of rubber abrasion plotted against...

The number of revolutions transformed the wear state from unsteady to steady can be regarded as a state criterion of rubber abrasion to estimate the wear characteristics of rubber under identical r jnning conditions. It was found to be proportional to a negative exponent of the tensile rupture ratio. 

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