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木材の長時間引張試驗
https://jaxa.repo.nii.ac.jp/records/36573
https://jaxa.repo.nii.ac.jp/records/365739576b8ca-1f33-49f4-bd2e-82445d9c57bd
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA4433898.pdf (1.5 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||||
| タイトル | ||||||||||
| タイトル | 木材の長時間引張試驗 | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| その他のタイトル（英） | ||||||||||
| その他のタイトル | Tensile Creep Tests on Woods | |||||||||
| 著者 |
南, 義夫
× 南, 義夫
× Minami, Y.
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| 出版者 | ||||||||||
| 出版者 | 東京帝國大學航空研究所 | |||||||||
| 書誌情報 |
東京帝國大學航空研究所彙報 巻 174, p. 23-37, 発行日 1939-02 |
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| 抄録（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | In the previous paper the auther dealt with the problem of the relation between the time and the deflection in the bending test of wood. In the present one, the auther made a study of, in the tensile test of wood, (1) the effect of time on the strain under the constant load, and (2) the relation between the applied load and the time required to rupture. The materials used are "Hinoki" (Chamaecyparis obtusa S. et Z.) and Sitka Spruce. General conclusions are as follows: - (1) Even at stresses of amount 15～20% of the ultimate tensile strength, the strain increases gradually with time, and the strain-time curves obtained under various constant loads are analogous to the creep curves of the metals. (2) The strain-time curves can be expressed approximately by the formula e=e_1+klogt (t>1) where t, the time, e_1 and e, the strain at times t=1 and t=t and k is the function of the applied load. (3) The strain-time relation curves are influenced by the temperature and humidity and it appears that in general the effect of the latter is more predominant than of the former. (4) Under the stresses up to the amount about 500kg/cm^2, the wood fibres extend or contract in accordance with the increase or diminution of the moisture content produced by the variation of humidity. (5) Apparent increase in tensile strain with time under the constant load is partly elastic and partly plastic. (6) The time required to rupture under the constant load at first gradually and then sharply increases with the decrease in load applied. | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN00162779 | |||||||||
| 資料番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 資料番号: SA4433898000 | |||||||||
