PSI - Issue 68

P. Langourani-Kosteletou et al. / Procedia Structural Integrity 68 (2025) 112–118 P. Langourani-Kosteletou et al. / Structural Integrity Procedia 00 (2025) 000–000

115

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Fig. 2. (a) Force-Displacement Curve of the A5 test piece. The proportionality limit (P l ), the yield load (F y ), and the yield displacement (D y ) can be seen ; (b) the linear segment of the curve and the respective best-fitted linear equation. Table 1. Experimental Data for Stiffness, Proportionality Limit, Yield Load, and Yield Displacement for Group A and Group B. This table displays the experimental data obtained from the load-displacement curves of each tested construct. “NA” (not available) indicates entries where data points were excluded from the analysis due to being identified as statistical outliers.

Stiffness [N/mm]

Proportionality Limit [N] Yield Load [N]

Yield Displacement [mm]

Sample

Group A

Group B

Group A

Group B

Group A

Group B

Group A

Group B

1 2 3 4 5 6 7 8 9

NA 362 507 449 462 411 398 NA 644

798 604 NA 681 669 NA 724 818 722

NA 240 260 300 350 340 440 380 420

520 560 NA 480 520 600 520 540 460

NA 280 300 360 400 400 500 420 460

580 600 NA 560 620 660 620 620 520

NA

1.02 1.18

0.84 0.80 0.90 1.04 1.00 1.34 1.02 1.00

NA

1.16 1.22 1.08 1.18 1.14 1.10

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Fig. 3. (a) Load-displacement curves for Group A samples. The curves for samples A1 and A8 have been excluded; (b) Load-displacement curves for the Group B samples. The curves for samples B3 and B6 have been excluded.