熱帯産材の粘弾性(第1報) : 加熱乾燥による収縮について

島根大学農学部研究報告 1 巻 116-120 頁 1967-12 発行
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タイトル
熱帯産材の粘弾性(第1報) : 加熱乾燥による収縮について
タイトル
Rheological Properties of Tropical Wood(I) : Shrinkage of Tropical Wood in Kiln Drying
タイトル 読み
ネッタイ サン ザイ ノ ネンダンセイ ダイ1ポウ カネツ カンソウ ニヨル シュウシュク ニツイテ
著者
藤田 晋輔
高橋 徹
収録物名
島根大学農学部研究報告
Bulletin of the Faculty of Agriculture, Shimane University
1
開始ページ 116
終了ページ 120
収録物識別子
ISSN 0370940X
内容記述
抄録・要旨
It has been thought hitherto that a remarkable creep occured at some period of drying, and this was assumed to be due to the plastic nature of wood, derived from the non-equilibrium of moisture.
This report deals with the rheological properties of three tropical woods. In the present paper is discussed the shrinkage of tropical wood during drying. For the examination of this paper, there are used thin specimen(300μ thickness) of radial plane of sliced veneer of three tropical woods(Spinarl : Anisoptera thurfer, Manggasinoro : Shorea philippinensis, Makore : Minusops hecklii). The experimental temperatures were 40゜, 60゜ and 80℃. The shape and dimension of the specimens are shown in Fig. 1. Test specimens were dried from the initial moisture content of about 290% to 5%. (Fig. 2)
Experimental results are summarized as follows :
The shrinkage during drying at 40゜, 60゜ and 80℃ are shown in Fig.3, 4 and 5, and the relation between the rate of shrinkage per unit time and drying time from green condition at 40゜, 60゜ and 80℃. are shown in Fig. 6, 7 and 8.
1 ) In the drying of sliced veneer, the shrinkage is dependent on the arrangement of structure and specific gravity of wood.
2 ) The maximum value for the rate of shrinkage per unit time is hardly dependence on the temperature, but the moisture content for the maximum value of rate of shrinkage per unit time exists between 40 and 50% without regard to temperature.
言語
日本語
資源タイプ 紀要論文
出版者
島根大学農学部
発行日 1967-12
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
関連情報
[NCID] AN00108015