Title Transcription
オウリョク オ ウケテイル モクザイ ノ シュウシュク ボウジュン 2 ヒッパリ オウリョク
Title Alternative
The Shrinking and Swelling of Wood under Stress(2) : Tensile Stress
File
language
jpn
Author
Okusa, Katsumi
Hayashi, Shozo
Kosako, Yoshihiko
Description
In this work, the effect of dead tensile stress on the shrinking and the swelling of wood was examined and the following results being obtained: the coefficient of shrinking (α) becomes smaller and the coefficient of swelling (β) becomes larger in proportion to the increase of stress. This means that wood became set in the stretched condition caused by the tensile stress.
Generally speaking, if wood is stretched below its proportional limit, it regains the original dimention when the load is removed. However, wood may act as a plastic material under prolonged strain, and as a result a permanent deformation may form, even though the load were never great enough to strain the wood beyond its proportional limit. And hence, we investigated that permanent deformation of wood in moisture-equilibrium state which is caused by the dead tensile stress. The value obtained was negligible even under maximum stress (15kg / <cm>^2) used in the firstly-mentioned examination.
Journal Title
島根農科大学研究報告
Volume
4
Start Page
93
End Page
96
ISSN
05598311
Published Date
1956-05-30
NCID
AN00108241
Publisher
島根農科大学
Publisher Aalternative
The Shimane Agricultural College
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
Remark
A,Bを含む