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林业科学 ›› 2014, Vol. 50 ›› Issue (7): 138-142.doi: 10.11707/j.1001-7488.20140719

• 论文与研究报告 • 上一篇    下一篇

基于三维扫描技术的木材断口分形特征

张绍群1, 花军1, 许威1, 陈光伟1, 刘龙1, Cai Liping2   

  1. 1. 东北林业大学机电工程学院 哈尔滨 150040;
    2. Dept. of Mechanical & Energy Engineering, University of North Texas TX 76207
  • 收稿日期:2013-09-25 修回日期:2013-12-24 出版日期:2014-07-25 发布日期:2014-07-04
  • 基金资助:

    国家自然科学基金面上项目“连续动载作用解离木纤维的分形机理与建模研究”(31070499)。

Fractal Feature of Wood Fracture with 3D Scanning Technologies

Zhang Shaoqun1, Hua Jun1, Xu Wei1, Chen Guangwei1, Liu Long1, Cai Liping2   

  1. 1. College of Mechanical and Electrical Engineering, Northeast Forestry University Harbin 150040;
    2. Dept. of Mechanical & Energy Engineering, University of North Texas, TX, 76207, USA
  • Received:2013-09-25 Revised:2013-12-24 Online:2014-07-25 Published:2014-07-04
  • Contact: 花军

摘要:

以杉松和银白杨为试验材料,利用三维扫描技术研究木材断口的分形特征。结果表明:三维扫描技术可以有效地分析木材断口分形特征;木材断口截面面积与其距离零点的距离的对数之间具有明显的线性关系;木材断口最高点与剪切工作截面之间断口部分的分形维数随剪切工作截面向断口底部移动而逐渐减小;不同树种木材断口分形维数之间存在具有统计意义的显著性差异,杉松和银白杨断口分形维数均值分别为2.050和2.091。

关键词: 三维扫描技术, 木材断口, 分形特征, 分形维数

Abstract:

This paper presents a new method to study the fractal feature of wood fractures implementing the 3D scanning technology. Abies holophylla and Populus alba were chosen as the materials. The results indicated that the 3D scanning technology could be used effectively in analyzing the fractal feature of wood fractures. It revealed a strong linear correlation between the cross section area of the wood fracture and the logarithm of its distance to the origin. Further, the study showed that the fractal dimensions on the fracture section between the highest point of the wood fracture and the cross section decreases gradually as the cross section moving to the bottom of the fracture. Finally statistically significant differences were discovered among different wood types in fractal dimensions of wood fractures. The mean fractal dimensions of Abies holophylla and Populus alba wood fracture were 2.050 and 2.091.

Key words: 3D scanning technologies, wood fracture, fractal feature, fractal dimension

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