13th International Conference on Fracture June 16–21, 2013, Beijing, China -7- intensity factor cannot be neglected. For this type of thermomechanical problem it is not possible to find an analytical solution. That is the reason why computations of both the temperature field and the associated stresses and strains have been carried out by a finite element analysis. First, the temperature field is calculated with the same model presented in section 2 for the thermal source identification. The steady state temperature field is thus calculated and represented on figure 8 for a line heat source of 153Wm-1. Figure 8. Temperature field near the crack front The same type of decomposition and assumptions as presented for the previous geometry are used to calculate the stress field in the specimen. These two decompositions are detailed in figure 9 and 10. Figure 9. Decomposition of the general problem
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