PSI - Issue 38

15

Benaouda Abdellaoui et al. / Procedia Structural Integrity 38 (2022) 116–131 Benaouda Abdellaoui et al / Structural Integrity Procedia 00 (2021) 000 – 000

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Fig. 16. Pivot 4 facies

With SEM observations, it may be seen crack initiation sites and radial lines on figures Fig. 17 (a), Fig. 18(a), Fig. 19 (a). Cracking zone with a smooth and silky appearance may be seen in Fig. 17 (b), Fig. 18 (b), Fig. 19 (b))

Fig. 17. Pivot 2 (a) crack initiation by SEM; (b) cracking zone by SEM

Fig. 18. Pivot 3 (a) MEB of crack initiation; (b) MEB of the cracking zone

Fig. 19. Pivot 4 (a) MEB of crack initiation; (b) MEB of the cracking zone