湿式ペーパ摩擦材の動的真実接触挙動

抄録

In this report, dynamic behavior of real contact of paper-based wet friction material subjected to fluctuating contact pressure is investigated experimentally, and is compared with the behavior of material compression. Real contact area is measured by a contact microscope that utilizes the light characteristics of total reflection and polarization. A strobe light source is used to obtain the contact surface image at an arbitrary phase in the cycle of contact pressure change. It was observed that, in wet condition, the phase delay of real contact area to contact pressure decreased with the exciting frequency and that the tendency was similar to the phase delay of compressive strain. Also it was recognized that, in wet condition, the amplitude ratio of real contact area to contact pressure decreased with the frequency in the same manner as the amplitude ratio of compressive strain.