文献类型：期刊文献

中文题名：应用CT技术研究木材断口形态特征

英文题名：Applying Computerized Tomography(CT) to Study the Feature of Wood Fracture

作者：费本华[1] 赵勇[1] 覃道春[1] 杨忠[1] 侯祝强[1] 赵荣军[1]

第一作者：费本华

机构：[1]中国林业科学研究院木材工业研究所

年份：2007

卷号：43

期号：4

起止页码：137-140

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：CT断层扫描;木材断口;截面变化维数

外文关键词：CT（computerized tomography） ; wood fracture; fractal dimension of section area

分类号：S781.29

摘要：This paper initially applied the non-destructive evaluation-computerized tomography and the fractal theory to research the feature of wood fracture. Pinus elliottii, Populus×canadensis cv. ‘I-214’ and Larix gmelinii were choosed as samples. The author established the logarithm-logarithm relationship between the section area of wood fracture and its location, then defined the slope-D_L regressed by the two factors above as the section variation fractal dimension of wood fracture. The results showed: the non-destructive evaluation-computerized tomography can effectively analysis the feature of wood fracture. All the samples exist an marked linear relationship between the section area of fracture and its location, D_L is a new effective parameter to quantitatively characterize the feature of wood fracture, the delta of -2 described the complexity of fracture surface of wood. Due to the anisotropy and variation of wood properties, D_L is the statistically fractal dimension. All the results are tested by the statistic software——SARS, there exists remarkable difference between the D_L from different species. The average fractal dimension of fracture surface of Pinus elliottii is 2.25, Populus×canadensis cv. ‘I-214’ is 2.46, Larix gmelinii is 2.65.
This paper initially applied the non-destructive evaluation-computerized tomography and the fractal theory to research the feature of wood fracture. Pinus elliottii, Populus × canadensis cv. ＇ 1-214＇ and Larix gmelinii were choosed as samples. The author established the logarithm-logarithm relationship between the section area of wood fracture and its location, then defined the slope-DL regressed by the two factors above as the section variation fractal dimension of wood fracture. The results showed： the non-destructive evaluation-computerized tomography can effectively analysis the feature of wood fracture. All the samples exist an marked linear relationship between the section area of fracture and its location, DL is a new effective parameter to quantitatively characterize the feature of wood fracture, the delta of -2 described the complexity of fracture surface of wood. Due to the anisotropy and variation of wood properties, DL is the statistically fractal dimension. All the results are tested by the statistic software SARS, there exists remarkable difference between the DL from different species. The average fractal dimension of fracture surface of Pinus elliottii is 2.25, Populus × canadensis cv. ＇I-214＇ is 2.46, Larix gmelinii is 2.65.