PSI - Issue 46

Saurabh Gairola et al. / Procedia Structural Integrity 46 (2023) 182–188 Saurabh Gairola et al. / Structural Integrity Procedia 00 (2021) 000–000

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Fig. 7. Fatigue crack growth of Al 2024 in (a) CCT (Saeed, 2015) (b) SENT (Hudson, 1969)

3.3. Fatigue life Total fatigue life is calculated into two phases. The first phase, i.e., the crack initiation phase, was calculated using the stress life equation in Abaqus and Fe-Safe software; the second phase or the crack propagation phase was predicted using AFGROW. Total life obtained predicted using center cracked specimen gives better results compared to the single edge cracked specimen as shown in Fig. 8(a-b). The absolute average error in center cracked and edged cracked specimens is observed to be 39 and 46%, respectively.

Fig. 8. Fatigue life; (a) Best fit of experimental data (Mazlan et al., 2020) (b) Total life using center cracked and edge cracked specimen

4. Conclusion In current study, the fatigue and fracture behavior of Al 2024 in T3 condition was simulated using the experimental data, and following conclusions were made:  The fracture toughness of CT specimen was simulated using the XFEM technique in ABAQUS software, and the results obtained are in good correspondence with the experimental data. The fracture toughness predicted was 86 MPa. m 0.5 , which was within 1% of the experimental data from the literature.