Abstract
The birefringent coating method is one of the effective experimental method for the analysis two dimensional elastic-plastic problems. In this method, using epoxy polymer which is adhered to the surface of the metal specimen, stress distribution of the metal can be calculated with the isochromatic fringe patterns by the reflection of polalized light. On the contrary, numerical simulation is also important and the finite element method is now familiar to the elastic-plastic problem. In this study, the numerical calculation of the thin plate with a central thin defect subjected to uniaxial tension is conducted using FEM software LUSAS. Quasi-isochromatic fringes obtained by FEM are compared with experimental results.
