| 四种方法测木质材料动弹性模量的对比研究 |
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| 引用本文： | 齐永峰,徐华东,王立海.四种方法测木质材料动弹性模量的对比研究[J].森林工程,2011,27(1):19-22. |
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| 作者姓名： | 齐永峰 徐华东 王立海 |
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| 作者单位： | 1. 黑龙江省森林工程与环境研究所,哈尔滨,150081
2. 东北林业大学,哈尔滨,150040 |
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| 基金项目： | 黑龙江省科学技术横向合作项目 |
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| 摘 要： | 为寻找比较准确的估计木质材料静弹性模量的方法,以色木方材为例,采用纵向应力波、超声波、纵向共振和弯曲共振等4种方法检测41个无瑕疵试件的动弹性模量,采用静态载荷法测量其静弹性模量,并分析二者的相关性,采用配对t检验比较不同方法的差异。研究结果表明：四种方法测得的木质材料动弹性模量均高于其静弹性模量,但静、动弹性模量之间均呈显著的线性相关性,R2都大于0.7,因而四种方法都可以用来估计其静弹性模量。其中,弯曲共振法得到的样本试件动弹性模量与静弹性模量的差值均值最小,且相关性最高,因而运用弯曲共振法对木质材料静弹性模量进行估计最为准确,检测值也最接近静弹性模量值。
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| 关 键 词： | 木质材料 弹性模量 无损检测 |
Comparative Study on Dynamic Modulus of Elasticity of Wood Using Four Different Methods |
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| Qi Yongfeng,Xu Huadong,Wang Lihai.Comparative Study on Dynamic Modulus of Elasticity of Wood Using Four Different Methods[J].Forest Engineering,2011,27(1):19-22. |
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| Authors: | Qi Yongfeng Xu Huadong Wang Lihai |
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| Institution: | Qi Yongfeng(Institute of Forest Engineering and Environment of Heilongjiang Province,Harbin 150081),Xu Huadong,Wang Lihai,(Northeast Forestry University,Harbin 150040) |
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| Abstract: | In order to find out more accurate method for evaluating the static modulus of elasticity(MOE) of wood,the dynamic modulus of elasticity(MOEdy) of forty one small Acer mono clear wood specimens was tested via longitudinal stress wave,ultrasonic wave,edgewise vibration and flatwise vibration method respectively.Also,the static modulus of elasticity(MOEst) of all specimens was measured with traditional bending method.After then,the correlation between MOEdy and MOEst was analyzed by using SPSS software,and th... |
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| Keywords: | wood modulus of elasticity(MOE) nondestructive testing |
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