A LABORATORY METHOD TO EVALUATE OMPREHENSIVELY ABRASION,TRACTION ND ROLLING RESISTANCE OF TIRE READ COMPOUNDS

摘要

A laboratory test method has been developed,which allows the evaluation of diverse properties of tire tread compounds on the same sample.The laboratory test instrument consists of a rotating abrasive disk against which a rubber sample wheel runs under a given load,slip angle and speed.All three force components acting on the wheel during the tests are recorded.By changing the variable values over a wide range practically all severities encountered in tire wear are covered.The well-known fact that compound ratings depend on the road testing conditions is verified.Most compounds are only significantly distinguishable against a control over a limited range of testing conditions.Using a road test simulation computer program based on the laboratory data shows that not only ratings correspond to practical experience but also calculated absolute tire lives do.