| 杨树与落叶松原木中应力波的不同传播速度 |
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| 引用本文： | 杨学春,罗菊英.杨树与落叶松原木中应力波的不同传播速度[J].林业科学,2011,47(5). |
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| 作者姓名： | 杨学春 罗菊英 |
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| 作者单位： | 东北林业大学森林持续经营与环境微生物工程黑龙江省重点实验室,哈尔滨,150040 |
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| 基金项目： | 国家自然科学基金项目，哈尔滨市科技创新人才研究专项资金项目，中央高校基本科研业务费专项资金资助，东北林业大学研究生科技创新项目 |
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| 摘 要： | 通过应力波测试仪对健康的杨树和落叶松原木试件进行检测试验,研究应力波在这2种原木试件中径向、弦向和纵向(原木心材和边材)传播速度之间的关系以及径向传播速度和直径、弦向传播速度和检测角之间的相关关系.结果表明:在这2种树种中,应力波径向传播速度和原木直径呈正相关,原木纵向边材传播速度比相应心材中的要大,弦向传播速度与检测角呈现二次函数关系.通过试验分析得出应力波在原木纵向心材和边材传播速度与径向传播速度比的域值.
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| 关 键 词： | 杨树 落叶松 原木 应力波 传播速度 |
Different Propagation Velocity of Stress Wave in Poplar and Larch Logs |
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| Yang Xuechun,Luo Juying.Different Propagation Velocity of Stress Wave in Poplar and Larch Logs[J].Scientia Silvae Sinicae,2011,47(5). |
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| Authors: | Yang Xuechun Luo Juying |
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| Institution: | Yang Xuechun Luo Juying(Key Laboratory of Forest Sustainable Management and Environmental Microorganism Engineering of Heilongjiang Province Northeast Forestry University Harbin 150040) |
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| Abstract: | The experiments to poplar and larch logs samplings were done by using stress wave testing instrument.The relationships among radial,tangential and longitudinal(heartwood and sapwood) propagation velocity of stress wave in the two logs samplings were studied.Meanwhile the relations were analyzed between radial velocity and diameter,as well as tangential velocity and the detection angles.The results indicated that,in the both species,the radial velocity of stress wave had positive correlation with the diamete... |
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| Keywords: | Populus Larix logs stress wave propagation velocity |
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