含水率对落叶松材动态弹性模量的影响  

Influence of moisture content on the dynamic MOE of Larchwood

作　　者：司慧[1] 鹿振友 王立昌[2] 

机构地区：[1]北京林业大学工学院机械系,北京100083 [2]北京林业大学材料学院木工系,北京100083

出　　处：《木材加工机械》2007年第1期16-19,共4页Wood Processing Machinery

摘　　要：在不同含水率下,利用应力波、纵波共振和横向弯曲振动三种方法对落叶松材试件进行了检测试验,研究了木材含水率对动态弹性模量等的影响,不同含水率下测试参数和动态弹性模量之间关系以及三种测试方法所得动态弹性模量之间的相关性。结果表明,含水率对动态测试结果影响显著;含水率对各测试参数和动态弹性模量之间的相关性影响不大;所得到的三个动态弹性模量之间相关程度相当高。The testing experiments to Larchwood samplings were conducted in different moisture content by using stress wave, longitudinal resonance and transverse resonance. Studying the impact of the moisture content in Larchwood on the dynamic testing parameter and the MOE, the relationship between testing parameters and in different moisture content and the coefficient of correlation between the dynamic modulus of elasticity by three testing methods were studied. The results indicated that moisture content is significant effect on measuring results; there are little effect of it on coefficient of correlation between tested parameters and the dynamic moduli of elasticity and there are significant coefficients of correlation between the three obtained dynamic moduli of elasticity.

关 键 词：含水率 动态弹性模量 应力波 纵波共振 横向共振 

分 类 号：S781.23[农业科学—木材科学与技术]