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《Journal of Beijing Forestry University》 2011-04
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Fractal characteristics of macroscopic and microscopic cell-piled structure patterns of wood

SONG Sha-sha;ZHAO Guang-jie.College of Materials Science and Technology,Beijing Forestry University,100083,P.R.China.  
In the paper,we aim to provide a quantitative description of apparent characteristics of the macroscopic and microscopic cell-piled structure patterns of wood and acquire further information relating to wood structure,which cannot be described quantitatively.Based on the fractal analysis of differential box-counting dimension on macroscopic tangential section and microscopic tri-sectional structure photos of 18 species of wood in northeast China,results show that:1) macroscopic structural texture and microscopic structural patterns of the cell-piled wood both have fractal features,and they have very good characteristics of macroscopic and microscopic structural texture and patterns of roughness and order;2) compared with softwood,the macroscopic tangential section and microscopic tri-sectional patterns of hardwood have higher fractal dimensions,which shows that macroscopic and microscopic cell-piled structure patterns of hardwood are more rough and its order is more complicated;3) the general rule for the microscopic tri-sectional structure pattern of fractal dimension of softwood and hardwood trees is:transverse section tangential section radial section;4) when some types of cells are substituted,the existence of resin,vessels and wood parenchyma can influence the fractal dimension changes of the microscopic structural patterns of wood to various degrees.
【Fund】: 国家自然科学基金项目(30871967)
【CateGory Index】: S781.2
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