Table 11 Effect of the [90°] layers insertion on the relative damage measured through the tensile test.
Specimen | Relative peak load (%) | Relative displacement corresponding to peak load (%) | Relative max. displacement (%) | Relative tensile stiffness (%) |
|---|---|---|---|---|
[Al/0°/Al] | − 49.71 | − 14.22 | − 43.5 | − 41.4 |
[Al/90°/0°/90°/Al] | − 75.45 | − 8.33 | − 20.8 | − 73.21 |
[Al/0°/0°/Al] | − 76.2 | − 42.14 | − 30.9 | − 58.5 |
[Al/0°/90°/0°/Al] | − 60.13 | 2.14 | − 35.3 | − 60.9 |