単一の接触点の接触抵抗と刑磨紙の粒度の関係に関する考察

摘要

Behavioral phenomena of bridges have been investigated in order to resolve the phenomena in separating contacts. First of all, contact voltages have been measured under stationary contacts to know the initial state from which the phenomena start. In this paper, the relationship between the contact resistance of the single contact spot and the granularity of the emery paper will be investigated. The contact resistance of the single contact spot will be estimated from the difference of the contact voltage view point. The contact resistance will be calculated as the sum of the bridge resistance due to the asperity and the constriction resistance, and it will be compared to the estimated value of the contact resistance. The contact resistance due to the single contact spot depended on the granularity of the emery paper. It was the tendency that the estimated contact resistance of the single contact spot became small as the big value of the granularity of the emery paper was used to polish the contact surface.%これまで、コンタクト開離時の現象を明らかにするために、ブリッジの挙動を調べてきた。そのためには、ブリッジの初期状態を調べる必要があると考えて、接触時のコンタクトの接触電圧を測定してきた。本論文は、単一の接触点の接触抵抗とコンタクトの研磨に用いた研磨紙の粒度の関係を調べるものである。接触電圧の変化量から単一の接触点の接触抵抗を推定する。突起部（ブリッジ）による抵抗と集中抵抗の和から接触抵抗を計算し、実験によって推定した接触抵抗と比較する。個々の接触点の接触抵抗が研磨紙の粒度に依存し、研磨紙の粒度が大きくなると単一の接触点の接触抵抗が小さくなるという傾向がみられた。