13th International Conference on Fracture June 16–21, 2013, Beijing, China -6- Figure 6: ANSYS non-linear FE results (stress field and plastic zone on the front surface) at 500℃ considered. However, there are different exists in the second row, where the load is the maximum value before fracture in Figure 6 and the value under which the last clear moiré fringe is obtained in Figure 7. Based on Figures 6 and 7, numerical results apparently agree well with the experimental data. The displacement fields on the specimen surface by the moiré interferometry are invalid due to the existence of crack tip plasticity and out-plane deformation. As an amendment, the 3D FE simulation is a powerful auxiliary tool in the computation during late loading period, and the corresponding details will be described in future work. The hybrid experimental-numerical procedure [29] is believed to be an effective technique in the fracture analysis and prediction area. Figure 7: Corresponding experimental results (displacement field and plastic zone on the front surface)
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