Abstract
It was discovered that there is a new characteristic in the relationship between residual stress and its source, inherent strain. Based on this characteristic, a method for measuring three-dimensional residual stress and a method for predicting residual stress and deformation of large structures were developed. This is the new inherent strain method, which is described here. The basic theory of these methods was developed on the condition that an inverse analysis of the relationship between residual stress and intrinsic strain holds. To this end, it is important to distinguish between effective and noneffective inherent strains. The basic equations for these methods are derived using a simple three-bar model. The results are general formulae that work up to 3D problems. These are also explained.
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