回転ローラ間に生ずる接触圧力測定への微小突起を有する電着銅薄膜の適用

抄録

An electrodeposited copper foil that possesses conical projections regularly is applied to measure the pressure between two rollers in contact. Before measuring the pressure, the effects of number of cycles and frequency of the pressure on the ratio of real contact surface area to bottom area of the projections are investigated using servohydraulic testing machine. The cyclic softening of the copper foil is gradually recognized after 10³ cycles and its frequency dependence is also recognized in the pulsating compression test. Namely, if the number of cycles is the same, the increase of the frequency delays the progress of cyclic softening. However, if the number of cycles is 10² cycles in which the cyclic softening hardly proceeds, the ratio of real contact surface area to bottom area of the projections doesn't depend on the frequency, and the ratio is almost same value in the static test. The pressure between two rollers is measured at 10² cycles. The mean pressure over the width direction of the roller obtained by this method is in good agreement with theoretical values obtained by load cell.