2024-03-29T01:12:00Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02016544
2022-02-22T06:16:40Z
1642838163960:1642838253200:1642838253649:1642838257201
1642838403551:1642838412624
[報文]散孔材4樹種の相対湿度の変動による寸法変化
[ORIGINALS]Dimensional changes of four diffuse porous woods due to relative humidity
林, 弘也
HAYASHI, Hiroya
open access
南方資源利用技術研究会
Equilibrium moisture content
Adsorption
Desorption
Shrinkage
Swelling
Diffuse porous wood
平衡含水率
吸着
脱着
乾縮
膨潤
散孔材
Variation of relative humidity induced dimensional changes in tangential direction of four diffuse porous hard woods; normal and straight grain woods of ISUNOKI (Cercidiphyllum japonicum), KATSURA (Distylium recmosum), TABUNOKI (Persea thunbergii), and EGONOKI (Styrax japonicum). The Investigated range of relative humidity was the range of the moisture content of wood from 8% at surface absorbed water to 30% at fiber saturation point. By static conditioning method with many steps in relative humidity, woods swelled in a desorption process and shrank in an adsorption process at a limited humidity condition. This was provided on the condition that a conditioning process was changed from desorption process and vice versa. At this condition, wood equilibrium moisture content in an adsorption process was a lower than that in a desorption process in spite of increasing relative humidity. And woods shrinkage at a higher relative humidity in an adsorption process was greater than that at a lower relative humidity in a desorption process.
論文
南方資源利用技術研究会
The Society of Tropical Resources Technologists
jpn
journal article
VoR
http://hdl.handle.net/20.500.12000/0002016544
https://u-ryukyu.repo.nii.ac.jp/records/2016544
0912-9588
AN10236281
南方資源利用技術研究会誌 = Journal of the society tropical resources technologists
7
1
1
5
https://u-ryukyu.repo.nii.ac.jp/record/2016544/files/Vol7No1p1.pdf