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. 2025 Jul 25;17(15):2027. doi: 10.3390/polym17152027

Table 5.

Ductility index and toughness of the tested beams.

Beam Δ1 (mm) Δ2 (mm) DI = Δ12 A (kN·m) A/Acontrol
0B01-C
B02-C
70
26.5
48.3 ± 30.8 8.0
5.1
6.6 ± 2.1 7.4 11.03
3.29
7.2 ± 5.5 1.00
B03-GF
B04-GF
26.7
33.1
29.9 ± 4.5 6
7.6
6.8 ± 1.1 4.4 2.52
3.37
2.9 ± 0.6 0.41
B05-BF
B06-BF
20.5
20
20.3 ± 0.4 4.5
8.4
6.5 ± 2.8 3.1 2.11
1.22
1.7 ± 0.63 0.23
B07-GF-ST
B08-GF-ST
36.8
49.8
43.3 ± 9.2 4.6
6.2
5.4 ± 1.1 8.0 3.29
5.92
4.6 ± 1.9 0.64
B09-BF-ST
B10-BF-ST
22.4
23.8
23.1 ± 1.0 3.7
6.2
5.0 ± 1.8 4.7 2.91
3.02
2.9 ± 0.1 0.41
B11-GF-BF
B12-GF-BF
23.8
23.7
23.8 ± 0.07 5.1
6.5
5.8 ± 1.0 4.1 2.16
4.38
3.3 ± 1.6 0.45