Abstract
In general, not only an actual driving test using an automobile but also a laboratory test using a small rubber specimen are performed to study the friction and wear properties of tires. Laboratory test can be carried out easier than actual driving test. On the other hand, it is said that the result of the experiment in laboratory often differs from that of actual driving test. The differences in the experimental conditions such as contact areas, the contact shape, the mating surface, and so on are believed to cause the differences in the results. In this study, rubber specimens with various contact areas were rubbed against mating abrasive paper under same contact pressure for the basic study of the linkage between the laboratory test and the actual driving test. As a result, the friction and wear properties of rubber having different contact area differed, though the same kind of rubber was rubbed under the same contact pressure. Considering the ratio of contact area to thickness of the rubber specimen, the rubber with identical ratio showed approximately the same wear properties when the ratio is high. It seems that the specimen thickness affects the friction and wear properties of rubber.
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