人造板剖面密度检测所用X射线能量的探讨  

Discussion on x-ray energy in measuring vertical density profile of wood-based panel

作　　者：尹大勇[1] 潘斌[1] 程放[1] 

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091

出　　处：《木材加工机械》2008年第6期1-5,20,共6页Wood Processing Machinery

基　　金：中央级公益性科研院所基本科研业务费专项资金(CAFINT2007K03)

摘　　要：通过计算分析刨花板对20～100keV的X射线的质量衰减系数得出,用X射线吸收法检测密度在0.4～0.9g/cm3之间、长宽尺寸为50mm×50mm的人造板试件的剖面密度时,射线能量在20～50keV之间时可获得最佳的检测灵敏度;含水率和树种这两个因素对质量衰减系数影响极显著;当射线能量在20～40keV之间时,施胶量的影响由极显著变为显著,当射线能量达到50keV时,施胶量的影响已不显著。The mass attenuation coefficients of particleboards were analysed when they were penetrated by x-rays of 20～100keV using x-ray absorptiometry,if x-ray among 20～50keV was used in measuring the vertical density profile of wood-based panel samples,whose density was among 0.4～0.9g/cm3 and dimension was 50mm×50mm,the best sensitivity would be got,and the effect of the two factors-moisture content and wood species of the panel on the mass attenuation coefficient were both extremely significant;if x-ray among 20～4...

关 键 词：人造板 剖面密度 质量衰减系数 X射线吸收法 

分 类 号：TS653[轻工技术与工程]