Official Journal of the Japan Wood Research Society
Table 6 Measured elastic properties of N-finity bamboo (layout is adopted from [14])
From: Mechanical properties of laminated bamboo lumber N-finity according to ISO 23478-2022
Groups | Constants (\(E\) and \(G\)) in GPa | Specimen no. | Mean | STD | COV | ||||
|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | % | ||||
Group (a) | \({E}_{11}\) | 6.685 | 8.626 | 11.373 | 7.895 | 9.170 | 8.75 | 1.55 | 17.75 |
\({\nu }_{12}\) | 0.181 | 0.185 | 0.221 | 0.211 | 0.373 | 0.23 | 0.07 | 30.33 | |
\({\nu }_{13}\) | 0.257 | 0.429 | 0.221 | 0.315 | 0.362 | 0.32 | 0.07 | 23.36 | |
Group (b) | \({E}_{22}\) | 1.979 | 2.203 | 2.185 | 2.279 | 2.305 | 2.19 | 0.11 | 5.24 |
\({\nu }_{21}\) | 0.051 | 0.061 | 0.047 | 0.035 | 0.039 | 0.05 | 0.01 | 19.65 | |
\({\nu }_{23}\) | 0.654 | 0.107 | 0.871 | 0.594 | 0.409 | 0.53 | 0.25 | 48.70 | |
Group (c) | \({E}_{33}\) | 1.107 | 1.524 | 0.999 | 1.050 | 0.888 | 1.11 | 0.21 | 19.53 |
\({\nu }_{31}\) | 0.048 | 0.045 | 0.052 | 0.095 | 0.031 | 0.05 | 0.02 | 39.83 | |
\({\nu }_{32}\) | 0.466 | 0.842 | 0.541 | 0.51 | 0.425 | 0.55 | 0.15 | 26.56 | |
Calculated | \({G}_{12}\) | 1.97 | – | – | |||||
\({G}_{13}\) | 1.38 | – | – | ||||||
\({G}_{23}\) | 0.51 | – | – | ||||||