文献类型：期刊文献

英文题名：RELATIONSHIP ANALYSIS BETWEEN TOMOGRAMS AND HARDNESS MAPS IN DETERMINING INTERNAL DEFECTS IN EUPHRATES POPLAR

作者：Liang, Shanqing[1] Fu, Feng[1]

第一作者：梁善庆

通信作者：Fu, F[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2012

卷号：57

期号：2

起止页码：221-230

外文期刊名：WOOD RESEARCH

收录：;EI(收录号：20123115299988);Scopus(收录号：2-s2.0-84864362127);WOS:【SCI-EXPANDED(收录号:WOS:000306442200004)】；

基金：The authors are grateful acknowledge financial support from the project of Wood-inorganic Restoration Material which from Technique Introduction and Innovation of Bio-macromolecule New Material of Introducing Overseas Advanced Forest Technology Important Program of China (2006-4-C03). We also greatly appreciate Mr. James H. Muehl for his comprehensive review and suggestions for enhancing this paper.

语种：英文

外文关键词：Stress wave; tomogram; wood; defect detection; hardness

摘要：Eight Euphrates poplar (Populus euphratica Oliv.) disks were investigated in the laboratory using acoustic tomography (ARBOTOM (R) impulse tomography) and evaluating the defects with tomograms. Hardness was measured on the top surface of all disks to construct two and three dimensional hardness maps using Matlab software. The potential relationship between the tomograms and hardness maps was discussed quantitatively for improving the acoustic tomography interpretation. This study showed that acoustic tomography effectively assessed the position of defects, but tended to underestimate the size of the decay and the holes and overestimated lateral cracks in disks. A positive relationship between velocity and hardness in the radial direction was found by quantitative analysis allowing a comparison between hardness maps and tomograms. Results from this study offer an insight into the relationship between stress waves and mechanical properties in wood and may provide in-depth information to correct errors found in tomogram images.