The relationship between macroscopic strain and crystal lattice strain in wood under uniaxial stress in the fiber direction
The relationship between macroscopic strain and crystal lattice strain in wood under uniaxial stress in the fiber direction
复制标题
纤维方向单轴应力下木材宏观应变与晶格应变的关系
DOI：
10.1007/s10086-005-0697-8
复制
发表时间：
2005
影响因子：
2.9
通讯作者：
T. Nakao
中科院分区：
文献类型：
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作者：
T. Nakai;Hiroyuki Yamamoto;T. Nakao
木材是一种主要由纤维素和非纤维素基体组成的天然复合材料。形成骨架的天然天然纤维素包含约一半的组分（结晶度：约50%-60%）。虽然天然纤维素可能对木材的动态行为有很大的影响，但关于木材中的结晶区和非结晶区对小透明试样的宏观和半微观动态行为的影响的报道很少。在本研究中，通过在纤维方向上对试样施加单轴压缩应力和拉伸应力来进行X射线应力测量。详细研究了试样中晶格应变与宏观应变（以下简称表面应变）之间的关系。采用经向（004）衍射计算晶格应变。由于认为纤维的取向对动态行为的影响很大，因此考虑到试验片的微原纤倾斜角（MFA，通过Cave方法）进行实验。
Wood, a natural composite material, is composed mainly of cellulose and noncellulose matrix. The native natural cellulose that forms the skeleton comprises about half of the components (crystallinity: about 50%–60%). Although it is probable that natural cellulose greatly affects the dynamic behavior of wood, there have been few reports1–3 on the effects of the crystalline and noncrystalline regions in wood on the macroscopic and semi-microdynamic behaviors in small clear specimens. In the present study, X-ray stress measurements were performed by applying uniaxial compression stress and tensile stress to test specimens in the direction of the fibers. The relationship between the crystal lattice strain and the macroscopic strain in the test specimens (hereafter referred to as the surface strain) was investigated in detail. Meridional (004) diffraction was used to calculate the crystal lattice strain. The experiment was carried out taking into account the microfibril inclination angle (MFA, by Cave’s method) of the test piece, because it is thought that the orientation of the fibers greatly affects the dynamic behavior.
木材结晶区的力学行为和拉伸试验中木材的压电响应
DOI：
--
发表时间：
2005
期刊：
Wood Science and Technology, published online (DOI 10.1007/s00226-004-0285-x). 38
影响因子：
--
作者：
Nakai;T.;Yamamoto H.;Nakao;T.;Hamatake;M.
通讯作者：
M.