期刊论文

中文

林业科学

1001-7488

2010

46

2

122-127

30871983:国家自然科学基金 209089:教育部人文社会科学研究项目 088090:湖南省优秀青年项目

本校为第一机构

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、测垦精度高的特点,为木材含水率的动态检...

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%,the maximum difference of measure...