【作者】 罗菊英； 杨学春；

【Author】 Luo Juying Yang Xuechun (Key Laboratory of Forest Sustainable Management and Environmental Microorganism Engineering of Heilongjiang Province,Northeast Forestry University Harbin 150040)

【机构】 森林持续经营与环境微生物工程黑龙江省重点实验室(东北林业大学)；

【摘要】 通过Arbotom和Fakopp应力波测试仪对无缺陷杨树和落叶松原木试件进行检测试验,研究了应力波在这两种原木试件中径向传播时间、纵向传播速度及动弹性模量同试件的含水率、密度和直径之间的关系。试验结果表明,在这两种树种中,应力波径向传播时间和含水率呈正相关;纵向传播速度同含水率和直径都呈负相关,且受含水率和直径的综合影响要更显著一些,动弹性模量受含水率、密度和直径的综合影响比较显著。更多还原

【Abstract】 The testing experiments to poplar and larch logs samplings were conducted by using Arbotom and Fakopp stress wave testing instrument. The relationships between radial propagation time,longitudinal propagation velocity as well as dynamic modulus of elasticity of stress wave and moisture content,density and diameter were studied in the two logs samplings. The results indicated that,in the both species,the radial propagation time of stress wave had positive correlation with moisture content,and the longitudinal propagation velocity had negative correlation with moisture content and diameter,and the dynamic modulus of elasticity was influenced markedly by the combined of moisture content,density and diameter.更多还原