Abstract
In a recent study of the sliding frictional tests between sphere(SUJ2) and plane(S45C) under dry coditions, it has been confirmed that the static friction force increases under no relative slip, the static friction force is smaller than the kinematic friction force, and relative slip is observed before the maximum friction force. Moreover, the adheasion tests between sphere(SUJ2) and plane(S45C) were performed to elucidate the cause of increasing static friction force under no relative slip, by using a press testing machine designed newly. However, it was difficult to measure the adhesion force. In this study, the adhesion test similar to the above tests were made between plane(S45C) and plane(S45C), as the results, the existence of the adhesion force of 0.2g〜0.8g were recognized.
