13th International Conference on Fracture June 16–21, 2013, Beijing, China -7- 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 a/D a/b m=2 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 m=2 a/D a/b Figure 5. Evolution of the aspect ratio a/b with crack growth (represented by the relative crack depth a/D) for m=2, starting from different initial crack geometries under tension loading (left) and bending moment (right) 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 m=3 a/D a/b 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 m=3 a/D a/b Figure 6. Evolution of the aspect ratio a/b with crack growth (represented by the relative crack depth a/D) for m=3, starting from different initial crack geometries under tension loading (left) and bending moment (right) 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 m=4 a/D a/b 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 m=4 a/D a/b Figure 7. Evolution of the aspect ratio a/b with crack growth (represented by the relative crack depth a/D) for m=4, starting from different initial crack geometries under tension loading (left) and bending moment (right)
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