Stress Distribution around a Screw Dislocation in a Thin Crystal

Abstract

This paper presents the result of calculations on the stress distribution around a screw dislocation in a thin foil-crystal calculated by use of the IBM digital computer. In an infinite medium, it is well known that a screw dislocation makes a stress field with one stress component τθz, where z is the direction of the Burgers vector. In a thin foil-crystal, it was found that a screw dislocation makes a stress field with not only τθz which vanishes at free surface but τγθ which concentrates at the surface.