Theoretical Analysis of Ring-Core Method for Residual Stress Determination

The ring-core method is semi-destructive experimental method used for the residual stress measurement. This method depends on the calibration coefficients which need to be obtained by experiment or FE-analysis. This paper considers application of the general-purposed finite element model which is suitable for the calibration coefficients determination. The FEM model is convenient for determination of the depth varying residual stress too. The calibration coefficients are determined by the integral method.