Research Article
Experimental Investigation of the Size Effect of the Mode I Static Fracture Toughness of Limestone
Table 3
Analysis of the equation predictions.
| | Sample number | Sample radius (mm) | Crack length (α) | Average test value (MPa·m1/2) | Predicted value (MPa·m1/2) | Relative error (%) |
| | NSCB75-1-1-3 | 75 | 0.4 | 1.255 | 1.218 | 2.94 | | NSCB75-2-1-3 | 75 | 0.5 | 1.217 | 1.237 | 1.6 | | NSCB75-3-1-3 | 75 | 0.6 | 1.163 | 1.15 | 1.11 |
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