13th International Conference on Fracture June 16–21, 2013, Beijing, China -6- length a are 75 mm, 32 mm, and 20 mm respectively. Figure 6. Fracture test using second set-up Load Line Displacement (mm) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Load(kN) 0 2 4 6 8 10 12 Mode-I Mode-II Figure 7. Load vs LLD at -20oC Table 2. Average experimental results for mode-I and mode-II loading Mode of loading ( ) P kN cr Critical stress intensity factor . ) (MPa m Pure mode-I 5.3 1.03 Pure mode-II 11.2 1.3
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