The influence of rays on the transverse elastic anisotropy in green wood of deciduous trees

被引：54

作者：

Burget, I

Bernasconi, A

Niklas, KJ

Eckstein, D

机构：

[1] Univ Hamburg, Ordinariat Holzbiol, Inst Wood Res, D-21031 Hamburg, Germany

[2] Fed Res Ctr Forestry & Forest Prod, Inst Wood Phys & Mech Technol Wood, Hamburg, Germany

[3] Cornell Univ, Dept Plant Biol, Ithaca, NY 14853 USA

来源：

HOLZFORSCHUNG | 2001年 / 55卷 / 05期

关键词：

transverse elasticity; transverse anisotropy; deciduous trees; rays; density; green wood;

D O I：

10.1515/HF.2001.074

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

The green wood of twelve deciduous tree species was investigated regarding its radial and tangential moduli of elasticity measured in tension (E-R and E-T, respectively). In addition, the wood density and the volume fraction of rays were determined. A strong positive correlation was found between structural and stiffness properties, A simple two component model was derived for the relationship between the transverse elastic anisotropy factor (i.e., E-R/E-T) of the green wood and the relative volume fraction of the axial and ray tissues. In the radial direction of the wood, the modulus of elasticity is influenced by the wood density and the volume fraction of rays; in tangential direction only the density seems to be important. However, the comparison between the elastic anisotropy and the volume fraction of rays indicates that the rays may have an indirect influence due to their shape.

引用

页码：449 / 454

页数：6

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