PSI - Issue 68

M. Álvarez et al. / Procedia Structural Integrity 68 (2025) 272–278 M. Álvarez et al. / Structural Integrity Procedia 00 (2025) 000–000

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according to UNE-EN ISO 6892-1 [International Organization for Standardization (2010)], with its basic material properties shown in Table 1. Vickers hardness measured on polished samples is also included in Table 1.

Table 1. S355G10+M mechanical properties obtained through tensile tests. Average Standard deviation E (GPa) 217 11.46 σ y (MPa) 361 9.56 σ u (MPa) 546 8.2 HV 206 7.4

2.2. Geometry Dog-bone specimens were dimensioned according to ISO 1099 [ISO (2017)] and grinded with silicon carbide (SiC) papers before testing. As seen in Fig. 1, the specimens were extracted from a 35 mm thick plate in such a way that the loading axis was transverse to the rolling direction.

Fig. 1. Schematic illustration of specimen orientation

2.3. Specimen precorrosion Prior to CF testing, specimens were subjected to localized precorrosion, inducing the formation of a crack precursor defect near the center of the reduced section (Fig. 2). Artificial corrosion pits were generated through immersion in FeCl 3 solution for 144 hours, according to ASTM G48-11 [American Society for Testing and Materials (2020)].

Fig. 2. Precorroded defects at the reduced section of the specimens