13th International Conference on Fracture June 16–21, 2013, Beijing, China -4- 0.3 (Poisson ratio), 1067 Y Mpa (yield stress), 3 7800kgm (mass density), 1 1 460 C JK kg (specific heat), 1 2 52WK m (heat conduction coefficient). The Burger vector's modulus is taken such that 10 1.8 10 b m . The radius of the specimen is supposed to be 1.5 cR mm and its height is defined by 6 L mm . The finite element analysis is performed using Cast3M a general FE computer code developed by the CEA (French Alternative Energies and Atomic Energy Commission) with linear 3D elements. 3.1 Comparison with experimental data The numerical results are compared with the experimental results obtained with two specimens. In Table 1 are given the number of cycles to failure f N , the crack parameters measured after the failure inc a and e, as well as the radius of the crack at 0 t which is defined by 0 / 0.94 inc a a as proposed by Paris 20 Table 1. Experimental parameters Test f N (cycles) inc a ( m ) e 0a ( m ) 1 7 5,25 10 10.03 0.79 10.67 2 7 4,24 10 13.80 0.83 14.68 The comparison between the measured and the computed temperature are plotted in Fig. 2 for test 1, and in Fig. 3 for test 2. These comparisons show a good agreement between the predicted and the measured values. Figure 2. Test 1: Comparison between the modeled and the experimental temperature
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