PSI - Issue 61

Jignesh Nakrani et al. / Procedia Structural Integrity 61 (2024) 188–194 Jignesh Nakrani et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 2. FCGR test setup.

3. Results and discussion 3.1. Tensile Properties

Table 2 provides a summary of the tensile test results for both the base materials and the FSW joint. Notably, the yield strength of the FSW joints align closely with that of Al5083. Additionally, the Young’s modulus of the FSW joint falls between those of Al5083 and SS304.

Table 2. Tensile properties Specimen

Yield Strength (in MPa)

Young’s modulus (in GPa)

SS304 Al5083

317 ± 2 159 ± 14 160 ± 3

164 ± 4 64 ± 1 97 ± 1

FSW Joint

3.2. Fatigue Crack Growth Rate

Fig. 3. da / dN vs. ∆ K

Fig. 3 represents variation in da / dN (crack growth rate) with ∆ K (stress intensity factor range) in a logarithmic scale, for both the base materials and the FSW joint cases. Stress intensity factor range, ∆ K (for CT specimen) was assessed as per the procedure outlined in ASTM E647 standard, using Eq (1).