화학공학소재연구정보센터
Materials Science Forum, Vol.404-7, 509-514, 2002
A summary of past contributions on residual stresses
In past one and half decades we have presented our work in 24 specialized papers for a variety of configurations of residual stress measurements. A technique, often referred to as the "crack compliance method", was first developed using the solutions of linear fracture mechanics, which uses a thin cut of increasing depth to release residual stress incrementally on the plane of measurement. Later developments have greatly expanded its application to near surface measurement and through-thickness measurement in many complex geometries. Another technique, which we refer to as the single slice method, is recently developed for measurement of the residual axial stress in plane strain. An important feature of the technique is that it allows the original stresses to be measured from a fractured part. This summary will cover the basic concepts and applications of the techniques.