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作者

Robert T. Eckenrode;Gregory A. Dahle;E. Thomas Smiley;David DeVallance;Iwona Cynk-Dahle;Matthew Walker

来源

URBAN FORESTRY & URBAN GREENING,Vol.73,Issue1,Article 127591

语言

英文

关键字

Digital image correlation;Strain;Biomechanics, static loading;Branch attachment

作者单位

Davis College, Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, USA;Bartlett Tree Research Laboratories, 13768 Hamilton Rd., Charlotte, NC, USA;InnoRenew CoE, Izola, Slovenia and University of Primorska, Koper, Slovenia;North Elementary School, Morgantown, WV, USA;Davis College, Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, USA;Bartlett Tree Research Laboratories, 13768 Hamilton Rd., Charlotte, NC, USA;InnoRenew CoE, Izola, Slovenia and University of Primorska, Koper, Slovenia;North Elementary School, Morgantown, WV, USA

摘要

Branch failure resulting from static loading events can be caused by ice, snow, or a climbing arborist aloft in a tree and can cause power outages, road blockages, costly property damage, or personal injury. In previous studies, researchers calculated bending stress to investigate the load-bearing capacity of branches. Yet, these calculations require geometric measurement of the wood that may not always be readily measure post failure. As stress and strain are linearly related, this study used static loading trials and digital image correlation to measure strain, tissue displacement, to gain insight on how loads move through the branch union zone. The results indicate that strain is located distally in the branches and diminishes through the branch union zone, suggesting that branch unions may serve a role in the damping of loads in trees.