| 无损检测技术评估规格材的性质 |
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| 引用本文： | 安源,殷亚方,王喜平,R. J. Ross,吕建雄,姜笑梅.无损检测技术评估规格材的性质[J].木材工业,2009,23(4). |
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| 作者姓名： | 安源 殷亚方 王喜平 R. J. Ross 吕建雄 姜笑梅 |
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| 作者单位： | 1. 中国林科院木材工业研究所;国家林业局木材科学与技术重点实验室,北京,100091
2. USDA,Forest Products Laboratory,Madison 53726-2398,WI,USA |
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| 摘 要： | 采用两种应力波设备对北美黄杉规格材进行抗弯强度性质的预测，分析规格材破坏模式，并讨论木材节子对规格材强度的影响。测试结果表明，动态与静态测试结果之间的相关程度较高。结构材的破坏模式主要为纹理断裂和脆性断裂;在规格材中间部位节子较多，且节子在规格材横断面上投影面积较大时，易发生脆性断裂。
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| 关 键 词： | 规格材 应力波 无损检测 节子 破坏模式 |
Evaluation of Bending Performance of Structural Lumber Using Nondestructive Methods |
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| AN Yuan,YIN Ya-fang,WANG Xi-ping,R. J. Ross,LU Jian-xiong,JIANG Xiao-mei.Evaluation of Bending Performance of Structural Lumber Using Nondestructive Methods[J].China Wood Industry,2009,23(4). |
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| Authors: | AN Yuan YIN Ya-fang WANG Xi-ping R J Ross LU Jian-xiong JIANG Xiao-mei |
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| Institution: | 1. Research Institute of Wood Industry;Chinese Academy of Forestry;Key Lab of Wood Science and Technology of State Forestry Administration;Beijing 100091;China;2. USDA;Forest Products Laboratory;Madison 53726-2398;WI;USA |
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| Abstract: | A study was conducted to evaluate the bending performance of Douglas-fir structural lumber based on two different types of stress wave equipment.The dynamic performance,based on the stress wave tests,was compared to the result from the static bending test.The failure modes of structural lumber,and the impact that knots had on the static test,were analyzed.It was found that the correlation between the dynamic and static test results was high.Fibrous tension and brash tension were the two main failure modes.W... |
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| Keywords: | structural lumber stress wave NDT knots failure modes |
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