Abstract
A method for evaluating stress components from interferometrically measured isopachics around a hole in a plate is proposed in this study. A Poisson equation that represents the relationship between the sum of principal stresses and an Airy stress function is solved using a finite element method. The Dirichlet boundary condition for solving the Poisson equation is determined by the approximation of an assumed Airy stress function along the boundary of the model. Therefore, the distribution of the Airy stress function is obtained from the measured isopachic contours. Then, the stresses are obtained from the computed Airy stress function. The effectiveness of the proposed method is validated by a simulation and an experiment. Results show that the stress separation of isopachics around a hole is possible by the proposed method.
