PSI - Issue 47

Hachimi Taoufik et al. / Procedia Structural Integrity 47 (2023) 711 – 722 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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The calculation code does not have a direct method to determine the crack's evolution as a time function. Therefore, various images at different time increments were taken and measured, as shown in Fig.10.

a=5mm

a=7mm

a=9.5mm

a=14.5mm

a=16.5mm

a=20mm

Fig. 10. Visual Analysis: Crack evolution measurement through the increments.

Fig.11 represents the evolution of crack length in the function of life fraction for the experimental tensile test, and the simulated one for specimen SENT with 0.4 thickness (2 layers). As the figures show in the beginning, the crack spreads slowly, and the crack growth is controllable. After 0.7, the crack's behavior increases rapidly and diverges to an uncontrollable zone.

Fig. 11. The crack length evolution as a function of life fraction.

Using the simulation data, Fig. 12 presents a comparative study between the simulation data and the experimental ones in the form of a life fraction for the crack length. The crack length is described by the transition from the stable zone to the unstable one. The life fraction is the instance time divided by the total time used for the simulation.