Load (kgf) | 10 | 20 | 30 | 50 | |
Crack parameters | a | 56.3 | 77.6 | 97.5 | 124.5 |
c | 148.2 | 210.4 | 243.3 | 327.3 | |
c/a | 2.63 | 2.71 | 2.50 | 2.63 |