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Table 2
Sample properties, SCB testing parameters and experimental results for the estimation of the mode I fracture toughness in Aue granite and Äspö diorite.
Propriétés des échantillons, paramètres des essais SCB et résultats expérimentaux pour l’estimation de la ténacité en mode I dans le granite d’Aue et la diorite d’Äspö.
| Sample name | Porosity (%) | Radius R (mm) | Spacing s (mm) | s/D | Thickness (mm) | Notch length a (mm) | a/R | Stress Intensity Factor Y | Peak Load Fmax (kN) | KIC (MPa m1/2) |
|---|---|---|---|---|---|---|---|---|---|---|
| Aue Granite | ||||||||||
| AGR1 | 1.28 | 24.78 | 25 | 0.50 | 25.00 | 12.0 | 0.48 | 3.58 | 1.55 | 0.87 |
| AGR2 | 1.82 | 24.16 | 25 | 0.52 | 24.18 | 12.0 | 0.50 | 3.82 | 1.44 | 0.91 |
| AGR3 | 1.75 | 23.89 | 25 | 0.52 | 23.69 | 12.0 | 0.50 | 3.93 | 1.36 | 0.92 |
| AGR4 | 1.82 | 23.84 | 25 | 0.52 | 24.46 | 14.5 | 0.61 | 5.23 | 1.00 | 0.96 |
| AGR5 | 1.77 | 24.03 | 25 | 0.52 | 24.42 | 12.0 | 0.50 | 3.87 | 1.78 | 1.14 |
| AGR6 | 1.65 | 23.90 | 40 | 0.84 | 24.00 | 12.0 | 0.50 | 7.04 | 0.84 | 1.00 |
| AGR7 | 1.70 | 24.09 | 25 | 0.52 | 24.45 | 12.0 | 0.50 | 3.85 | 1.44 | 0.91 |
| AGR8 | 1.59 | 23.68 | 25 | 0.53 | 24.48 | 12.0 | 0.51 | 4.02 | 1.68 | 1.13 |
| AGR9 | 1.43 | 23.27 | 25 | 0.54 | 25.89 | 12.0 | 0.52 | 4.21 | 1.56 | 1.06 |
| AGR10 | 1.32 | 23.45 | 25 | 0.53 | 26.43 | 12.0 | 0.51 | 4.13 | 1.27 | 0.82 |
| AGR11 | 1.68 | 23.19 | 25 | 0.54 | 24.87 | 12.0 | 0.52 | 4.25 | 1.56 | 1.12 |
| AGR12 | 1.66 | 24.22 | 40 | 0.83 | 24.57 | 12.0 | 0.50 | 6.83 | 0.88 | 0.98 |
| AGR13 | 1.65 | 25.24 | 25 | 0.50 | 24.72 | 12.0 | 0.48 | 3.41 | 2.00 | 1.06 |
| Äspö Diorite | ||||||||||
| ADR1 | 0.32 | 50.06 | 50 | 0.50 | 47.78 | 22.0 | 0.44 | 3.16 | 11.26 | 1.96 |
| ADR2 | 0.38 | 50.16 | 50 | 0.50 | 55.26 | 22.0 | 0.44 | 3.15 | 12.07 | 1.80 |
| ADR3 | 0.40 | 49.35 | 50 | 0.51 | 55.08 | 22.0 | 0.45 | 3.27 | 11.70 | 1.85 |
| ADR4 | 0.44 | 49.86 | 50 | 0.50 | 48.94 | 28.0 | 0.56 | 4.35 | 7.04 | 1.86 |
| ADR5 | 0.34 | 50.26 | 50 | 0.50 | 49.28 | 22.0 | 0.44 | 3.13 | 10.45 | 1.74 |
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