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| 干燥过程中木材内部含水率检测的X射线扫描方法 | |
| 引用本文： | 李贤军,蔡智勇,傅峰.干燥过程中木材内部含水率检测的X射线扫描方法[J].林业科学,2010,46(2). |
| 作者姓名： | 李贤军 蔡智勇 傅峰 |
| 作者单位： | 1. 中南林业科技大学材料科学与工程学院,长沙,410004 2. 美国林产品研究所,麦迪逊,53726-2398 3. 中国林业科学研究院木材工业研究所,北京,100091 |
| 基金项目： | 国家自然科学基金(30871983);;教育部重点项目基金(209089);;湖南省优秀青年基金(08B090) |
| 摘 要： | 以红橡和黑胡桃木材为研究对象,采用X射线扫描方法测量常规热风干燥过程中木材厚度方向含水率分布和平均含水率的可行性。结果表明:采用X射线扫描无损检测方法可以实现干燥过程中同一木材试件含水率分布和平均含水率的动态检测;与称重法含水率测量值相比,在8%～68%的较宽含水率范围内,不论是在高含水率阶段还是在低含水率阶段,采用X射线扫描法测量木材含水率时,都具有较高的测量精度,测量值偏差最大不超过3%;在热风干燥过程中,所有试件含水率的称重法测定值与X射线扫描法测定值之间相关系数的平方都在0.97以上;X射线扫描方法具有扫描速度快、设备费用较低、测量精度高的特点,为木材含水率的动态检测提供了一种很好的技术手段。 |
| 关 键 词： | X射线扫描 含水率 含水率分布 木材干燥 |
A New X-Ray Scanning Method for Measuring the Internal Moisture Content in Wood Drying |
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| Li Xianjun,Cai Zhiyong,Fu Feng.A New X-Ray Scanning Method for Measuring the Internal Moisture Content in Wood Drying[J].Scientia Silvae Sinicae,2010,46(2). | |
| Authors: | Li Xianjun Cai Zhiyong Fu Feng |
| Institution: | 1. School of Material Science and Engineering/a>;Central South University of Forestry and Technology Changsha 410004/a>;2. Forest Products Laboratory/a>;USDA Forest Service Madison/a>;WI 53726-2398/a>;3. Research Institute of Wood Industry/a>;CAF Beijing 100091 |
| Abstract: | Nondestructive X-ray scanning method was used to determine moisture content profile and mean moisture content of red oak (Quercus rubra) and walnut (Juglans nigra) samples during hot air drying. The moisture content measured by the nondestructive X-ray scanning method was compared with the corresponding ones measured by the traditional weighting method. It was found that the two methods were highly correlated with the correlation coefficient over 0.97. Within the range of moisture content between 8% and 68%... |
| Keywords: | X-ray scanning moisture content moisture content profile wood drying |
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