Table 8.
Comparison of the NENSIF values obtained from the fracture tests on notched polymeric samples with those predicted by the VO-MTS criterion.
| ρ (mm) | Loading Angle, β (°) |
Mean Experimental NENSIF | Predicted NENSIF | Discrepancy (%) |
|---|---|---|---|---|
| 1 | 0 (mode I) | 1 | 1 | 0 |
| 40 | 1.04 | 1.0 | 3.8 | |
| 65 | 1.09 | 1.0 | 8.4 | |
| 72 | 1.14 | 1.0 | 11.6 | |
| 90 (mode III) | 1.40 | 1.37 | 2.7 | |
| Avg.: 6.6 | ||||
| 2 | 0 (mode I) | 1 | 1 | 0 |
| 40 | 1.09 | 1.0 | 8.0 | |
| 65 | 1.18 | 1.01 | 13.9 | |
| 72 | 1.08 | 1.03 | 4.7 | |
| 90 (mode III) | 1.52 | 1.44 | 5.1 | |
| Avg.: 7.9 | ||||
| 4 | 0 (mode I) | 1 | 1 | 0 |
| 40 | 1.04 | 1.0 | 3.8 | |
| 65 | 1.19 | 1.02 | 14.2 | |
| 72 | 1.24 | 1.04 | 15.7 | |
| 90 (mode III) | 1.54 | 1.49 | 4.0 | |
| Avg.: 9.4 | ||||
| Avg.: 8.0 |