Issue 77

N. A. Alang et al., Fracture and Structural Integrity, 77 (2026) 340-361; DOI: 10.3221/IGF-ESIS.77.20

by the FE image shown in Fig. 15 to Fig. 16, where the specimen experiences localized plastic deformation before fracture. Furthermore, the scanning electron microscopy (SEM) images of the half-sliced specimens are also shown in Fig. 17 to Fig. 20. These figures further confirm the occurrence of thinning and a limited degree of necking. It is worth noting that no clear damage such as voids or cavities was found in the material, neither at the thinnest thickness nor the area adjacent to the fracture surface.

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(c) Figure 17: Fracture of as-received specimen: (a) FE simulation, (b) SPT and (c) half-sliced specimen under SEM.

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(c) Figure 18: Fracture of 4% pre-strained specimen: (a) FE simulation, (b) SPT and (c) half-sliced specimen under SEM.

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