文献类型：期刊文献

英文题名：STRENGTH LOSS AND HAZARD ASSESSMENT OF EUPHRATES POPLAR USING STRESS WAVE TOMOGRAPHY

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：44

期号：1

起止页码：54-62

外文期刊名：WOOD AND FIBER SCIENCE

收录：;EI(收录号：20120314702634);Scopus(收录号：2-s2.0-84855872020);WOS:【SCI-EXPANDED(收录号:WOS:000299404400007)】；

基金：The authors gratefully acknowledge financial support from the project Wood-inorganic Restoration Material (No. 2006-4-C03) in State Forestry Administration, P.R. China. We also greatly appreciate Mr. James H. Muehl for his comprehensive review, which enhanced this article.

语种：英文

外文关键词：Stress wave tomography; defect; strength loss; hazard assessment

摘要：Stress wave tomography is a noninvasive testing method for diagnosing defects in standing or cut trees. For this study, the technique was used to diagnose defects on 15 disks of Euphrates poplar (Poulus euphratica Oliv.) cross-sections. Two-dimensional tomograms were generated and used to estimate strength loss and assess potential tree stem failures. Results found that stress wave tomograms can effectively locate decay and void dimensions and that there was a logarithmic significant relationship (r = 0.9679) between real tomographic defect areas and visual defect areas indicated by the tomograms. This regression relationship could improve accuracy of hazard assessment in historic trees when using stress wave tomography. Strength loss was calculated based on Wagener, Coder, and Mattheck's equations. These three equations can provide effective internal tree stem weakness assessment. However, strength loss between tomographic defect areas in cross-sections and real visual defect area had a significant 0.05 statistical difference. The results of this study provided insight into defect diagnosis and hazard assessment for trees in China, especially those with historical significance.