The fracture energies used to control the rate of crack growth in each cell are obtained from the experiments detailed in Delamination Properties as described below in Table 6.3: Fracture Energies and Tests From Which They May be Derived.
Table 6.3: Fracture Energies and Tests From Which They May be Derived
| Property | Experimental Test |
|---|---|
| Mode I delamination 11 - Gf11 | DCB test. |
| Gf22 | Calibrate simulation to 0° tension test. |
| Gf33 | Calibrate simulation to 0° tension test. |
| Mode II delamination 13 – Gf13 | ENF test. |
| Gf12 (same as 13 direction) | ENF test. |
| Gf23 | Assumed to be same as other shear directions. |