Prediction of the mechanical properties of lumber by stress-wave velocity and Pilodyn penetration of 36-year-old Japanese larch trees
Prediction of the mechanical properties of lumber by stress-wave velocity and Pilodyn penetration of 36-year-old
Japanese larch trees
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通过 36 年树龄日本落叶松的应力波速度和 Pilodyn 穿透力预测木材的力学性能
DOI：
10.1007/s00107-008-0251-7
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
N. Yoshizawa
中科院分区：
文献类型：
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作者：
F. Ishiguri;Ryusei Matsui;K. Iizuka;S. Yokota;N. Yoshizawa
本研究的目的是获得的基础知识，日本落叶松木材（日本落叶松）的力学性能预测的基础上，树的属性，如应力波速度（SWV）和Pilodyn渗透值（Py）。立木的SWV和原木的动态杨氏模量（DMOE），这是在不同的高度获得之间的相关系数的值，随着木材采样高度的增加，逐渐下降，表明一棵树的SWV是受木材性质的影响在测量位置。木材的SWV与木材的平均弹性模量（莫伊）呈显著正相关（r= 0.834）。木材的Py值与木材的平均抗折强度（莫尔）呈显著负相关（r=-0.859）。当一棵树的SWV和Py都用于评估木材的平均莫伊或莫尔时，发现所获得的回归曲线的决定系数很高。这些结果表明，可以用日本落叶松的SWV和Py来预测木材的平均莫伊和莫尔。
The objective of this study was to obtain basic knowledge for the prediction of the mechanical properties of Japanese larch lumber (Larix kaempferi) on the basis of tree properties, such as the stress-wave velocity (SWV) and Pilodyn penetration value (Py). The values of the correlation coefficient between the SWV of a standing tree and the dynamic Young’s modulus (DMOE) of logs, which were obtained at various heights, gradually decreased with an increase in the log sampling height, indicating that the SWV of a tree is affected by wood properties at the measuring position. A significant correlation between the SWV of trees and the average modulus of elasticity (MOE) of lumber was found (r= 0.834). A significant negative correlation between the Py of a tree and the average modulus of rupture (MOR) of lumber was also found (r=− 0.859). A high coefficient of determination for an obtained regression curve was found when both the SWV and Py of a tree were used for evaluating the average MOE or MOR of lumber. These results indicate that the average MOE and MOR of lumber can be predicted by using the SWV and Py of the Japanese larch tree.