Table 2 Quasi-static and high rate off-axis tension and transverse tension properties
Fiber angle \(\varvec{\theta }\) (\(^\circ \)) | Ultimate strength (MPa) | Shear angle d\(\varvec{\theta }\) (\(^\circ \)) | Axial strain rate \(\varvec{{\dot{\varepsilon }}_{xx}\; (\mathrm {s^{-1}})}\) | Shear strain rate \(\varvec{{\dot{\gamma }}_{12}\; (\mathrm {s^{-1}})}\) | ||
|---|---|---|---|---|---|---|
Quasi-static | 15 | Mean | 364 | 1.56 | 2.1\(\cdot 10^{-4}\) | 7.8\(\cdot 10^{-4}\) |
STDV | 27.7 | 0.32 | 2.8\(\cdot 10^{-5}\) | 1.8\(\cdot 10^{-4}\) | ||
CV (%) | 7.6 | 20.5 | 13.3 | 15.3 | ||
30 | Mean | 175 | 0.82 | 2.9\(\cdot 10^{-4}\) | 6.0\(\cdot 10^{-4}\) | |
STDV | 12.5 | 0.09 | 7.7\(\cdot 10^{-6}\) | 4.2\(\cdot 10^{-5}\) | ||
CV (%) | 7.2 | 11.0 | 2.7 | 7.0 | ||
45 | Mean | 114 | 0.35 | 2.6\(\cdot 10^{-4}\) | 3.8\(\cdot 10^{-4}\) | |
STDV | 9.5 | 0.03 | 2.9\(\cdot 10^{-5}\) | 3.3\(\cdot 10^{-5}\) | ||
CV (%) | 8.3 | 8.6 | 11.3 | 8.6 | ||
90 | Mean | 62 | – | 2.8\(\cdot 10^{-4}\) | – | |
STDV | 14.0 | – | 1.7\(\cdot 10^{-5}\) | – | ||
CV (%) | 22.6 | – | 5.9 | – | ||
High rate | 15 | Mean | 503 | 1.45 | 113 | 358 |
STDV | 10.7 | 0.20 | 19 | 51 | ||
CV (%) | 2.1 | 13.8 | 16.8 | 14.2 | ||
30 | Mean | 223 | 0.71 | 177 | 337 | |
STDV | 3.3 | 0.05 | 10 | 10 | ||
CV (%) | 1.4 | 7.0 | 5.6 | 3.0 | ||
45 | Mean | 148 | 0.34 | 300 | 410 | |
STDV | 16.7 | 0.04 | 44 | 64 | ||
CV (%) | 11.3 | 11.8 | 14.7 | 15.6 | ||
90 | Mean | 79 | – | 271 | – | |
STDV | 11.9 | – | 13 | – | ||
CV (%) | 15.1 | – | 4.8 | – |