13th International Conference on Fracture June 16–21, 2013, Beijing, China -5- (a) CHS: 50 mm/min (ε ≈ 2.8×10−2 s−1) (b) CHS: 1 mm/min (ε ≈ 5.6×10−4 s−1) (c) CHS: 0.02 mm/min (ε ≈ 1.1×10−5 s−1) Figure 6. SEM micrographs at the central part of the fracture surfaces (CHS: Crosshead speed)
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