木材の老化に関する研究(第IX報) : 横圧縮彈性係数の変化

概要

論文の詳細を見る
In this experiment the young's modulus in a right angle to grain of old timbers were tested to research the influence of age on the elasticity of wood.The samples were taken from some old Japanese Buddhist temples and they have passed about 300,350,700,730,900,1200 and 1300 years respectively.The species used in this test were all HINOKI (Chamaecyparis obtusa ENDLICHER).The results obtained by this test are as follows.(1) The change of elasticity with the passage of time is shown in fig. 1.(2) The change of stress in compression parallel to grain with the passage of time is shown in fig. 2.(3) The increase or decrease of components of wood with the passage of time is shown in fig. 5.(4) The change of cristallized region of Holocellulore with the passage of time is shown in fig. 6.
日本森林学会の論文
1954-12-25