WOOD FRACTURE PATTERN DURING THE WATER DESORPTION PROCESS
WOOD FRACTURE PATTERN DURING THE WATER DESORPTION PROCESS
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水分解吸过程中木材的断裂模式
DOI：
10.1515/hf.2003.096
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发表时间：
2003
期刊：
影响因子：
2.4
通讯作者：
Zhen Lu
中科院分区：
文献类型：
--
作者：
Liyu Wang;Guang;Zhen Lu
木材是一种吸湿性材料，其力学性能随纤维饱和点以下的含水率而变化。木材的断裂特性是木材最重要的力学性能之一，作为一种工程结构材料，木材的断裂特性往往被视为重要的安全设计因素。本文旨在研究含水率变化对白桦木材断裂性能的影响，重点研究不同裂纹方向白桦木材的断裂行为和形态。和白皮松在两种不同的解吸过程中。这两个脱附过程分别是从纤维饱和点到20oC下对应82.4%RH的平衡含水率和在20oC从82.4%RH到35.2%RH的平衡含水率。
Wood is a hygroscopic material and its mechanical properties change with moisture content below the fiber saturation point. Fracture characteristic is one of most important mechanical properties of wood and often is taken as an important safety design factor for wood as an engineered structural material. The aim of this paper is to investigate the effect of moisture content changes on wood fracture properties, focusing on fracture behavior and patterns with different crack orientations of Betula platyphylla Suk. and Pinus bungeana in two different desorption processes. These two desorption processes were, respectively, from fiber saturation point to an equilibrium moisture content corresponding to 82.4%RH at 20oC and from 82.4%RH to 35.2%RH at the same temperature of 20oC.