Official Journal of the Japan Wood Research Society
Table 3 Changes in tanδ A/tanδ L during the relative humidity variation processes
From: Dynamic viscoelastic properties of Chinese fir under cyclical relative humidity variation
RH variation process | Changing sequency | Minimum (or maximum) value of tanδ A/tanδ L |
|---|---|---|
RH increasing process | 1 (58 % RH → 90 % RH) | 0.9805 |
2 (10 % RH → 90 % RH) | 0.9847 | |
3 (10 % RH → 90 % RH) | 0.9866 | |
4 (10 % RH → 90 % RH) | 0.9870 | |
5 (10 % RH → 90 % RH) | 0.9878 | |
6 (10 % RH → 90 % RH) | 0.9888 | |
7 (10 % RH → 90 % RH) | 0.9891 | |
8 (10 % RH → 58 % RH) | 0.9927 | |
RH decreasing process | 1 (90 % RH → 10 % RH) | 1.0523 |
2 (90 % RH → 10 % RH) | 1.0459 | |
3 (90 % RH → 10 % RH) | 1.0434 | |
4 (90 % RH → 10 % RH) | 1.0324 | |
5 (90 % RH → 10 % RH) | 1.0248 | |
6 (90 % RH → 10 % RH) | 1.0205 | |
7 (90 % RH → 10 % RH) | 1.0201 |