期刊论文

中文

中南林业科技大学学报

1673-923X

2012

32

1

43-47

10.14067/j.cnki.1673-923x.2012.01.024

30825034:国家自然科学基金 :中南林业科技大学木材科学与技术国家重点学科建设项目

本校为第一机构

以杉木Cunninghamia lanceolata为研究对象,采用X射线扫描和称重法测量了恒温恒湿干燥过程中杉木平均含水率的变化规律,探讨了采用X射线法动态检测干燥过程中木材平均含水率的可行性,并进一步研究了纹理方向对X射线扫描法测量木材含水率精度的影响规律。结果表明:采用X射线扫描法测量干燥过程中木材平均含水率是切实可行的,其测量值与用称重法得到的含水率测量值十分接近,两者之间相关的决定系数在0.99以上,绝对偏差在2%以内;沿着木材径向和纵向扫描时,平均含水率的测量精度略高于沿着弦向扫描时的含水率测量精度,但其偏差不大,在实际测量中可以忽略不计;在实际生产中,采用X射线扫描法测量木材内...

In order to explore the feasibility of using X-ray to measure moisture content m the drying process and have a mrther study on the effect of precision of moisture content when scanning through different grain directions, X-ray scanning method and weighting method were used to measure average moisture content of Cunninghamia lanceolata during hot air drying. The results show that the moisture content values of two methods were very close to one another, the determination coefficients of both were highly correlated with a valueover 0.99, and the absolute deviation was below 2%; when scanning alo...