Eddy Currents in Finite Conducting Sheets

Abstract

This paper deals with eddy currents in bounded plane conductors. Specifically, we are concerned with the semi-infinite plane sheet and a conducting disk. The eddy-current distribution in a perfectly conducting sheet or disk due to a magnetic monopole source is obtained by a technique due to Sommerfeld. Sommerfeld's analysis for the disk is incomplete, but we have completed the derivation for this geometry. The eddy-current decay in a semi-infinite sheet of finite conductivity is solved by an approximate technique. The results are used to calculate lift, drag, and transverse forces on a magnetic monopole moving parallel to the edge of a semi-infinite sheet of finite conductivity.