The Effect of Elastic Distortions Produced by Dislocation Loops in an Inhomogeneous and Anisotropic Medium on the Rotation Angles of Moire Fringes

The non‐uniform elastic distortions caused by the discrete elliptical Orowan loops in an inhomogeneous and anisotropic medium have been evaluated by using the equivalent inclusion method of Eshelby, and the effect of these distortions on the rotation angles of Moiré fringes has been investigated. The results are given as two line integrals, and by using the numerical method, the rotation angles of Moiré fringes are also obtained from the discrete Orowan loop surrounding an α‐Fe particle embedded in a Cu matrix. It is seen that the rotation angles, due to the elastic distortions of the discrete Orowan loop, of Moiré fringes depend on the anisotropic properties of the materials, the shape and orientation of Orowan loop, and the inhomogeneity effect, and that the inhomogeneity effect is important for both the isotropic and the anisotropic medium.