文献类型：期刊文献

中文题名：木材断口分形的初步研究

英文题名：An Approach to Study the Fractal Character of Wood Fracture

作者：费本华[1] 覃道春[1] 杨忠[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：2006

卷号：42

期号：3

起止页码：104-107

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】；

基金：国家自然科学基金资助项目(30170748)

语种：中文

中文关键词：木材;断口;分形;截面变化维数

外文关键词：wood; fracture ; fractal ; section variation dimension

分类号：S781.2

摘要：It is very difficult to characterize the fracture surface of wood with traditional way because of its irregularity and complexity. This paper, inspired from slit island method (SIM) and mass fractal method, proposes a new method, by which the change of sectional area with spatial location in wood fractures can be determined, to quantify the character of fracture surfaces. The experiment is done by continuously microtoming a fractured sample embedded with paraffin at intervals of hundreds micron along the longitudinal axis from tip to end of fracture. The results indicate there exists a linear correlation between the area and the corresponding location in a double logarithm coordinate. The slope, here termed as section variation dimension (D-L), is located between 2.23 to 2.75 with the D-L of pressed zone being smaller than that of tensile zone for a wood fractured by static bending, and D-L can be used to describe quantitatively the complexity of fracture surface of wood.
It is very difficult to characterize the fracture surface of wood with traditional way because of its irregularity and complexity. This paper, inspired from slit island method （SIM） and mass fractal method, proposes a new method, by which the change of sectional area with spatial location in wood fractures can be determined, to quantify the character of fracture surfaces. The experiment is done by continuously micretoming a fractured sample embedded with paraffin at intervals of hundreds micron along the longitudinal axis from tip to end of fracture. The results indicate there exists a linear correlation between the area and the corresponding location in a double logarithm coordinate. The slope, here termed as section variation dimension （ DL ）, is located between 2.23 to 2.75 with the DL of pressed zone being smaller than that of tensile zone for a wood fractured by static bending, and DL can be used to describe quantitatively the complexity of fracture surface of wood.