### 6.3.2. Softening Properties

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.

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