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Official Journal of the Japan Wood Research Society

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Table 1 Changes in local maximum or minimum value of free swelling–shrinkage (εα) during the cyclical relative humidity variation

From: Orthotropic hygro-mechanical behavior of Chinese fir during cyclical relative humidity variation

Local maximum or minimum value of εαOccurred sequencyLagged time (min)
LRT
\( \varepsilon^{\alpha }_{ \text{max} } \)13.802.622.22
23.532.422.02
33.012.121.92
42.722.021.87
52.691.921.85
62.601.941.82
\( \varepsilon^{\alpha }_{ \text{min} } \)14.113.022.51
23.622.792.33
33.062.422.21
43.022.292.12
53.032.142.03
62.982.112.05
  1. \( {\text{Lagged time}} = t_{{\varepsilon_{\text{max min}}^{\alpha } }} - t_{{{\text{RH}}_{\text{max min}} }} \); the RHmax min are considered as the RH after 60-min isohume conditioning, as marked in Fig. 2