Abstract
An ultrasonic technique was developed to study the characteristic for abrasion pattern of a rubber surface during stick slip motion and to demonstrate its applicability to the precisely contact pressure measurement utilizing Wigner distribution. Experiments were conducted using short cylindrical acril specimens pressed onto the rubber sheet bonded on a rotating disk. It was found that the contact pressure may be nearly zero soon after the locally high contact pressure area moves to the leading edge. In addition, the experimental results showed that the formation mechanism of the abrasion pattern observed on the rubber surface has close relation to locally sudden variation in the contact pressure due to a stick-slip phenomenon.
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