Fracture Behavior of Wood Under Mode I Loading in Tangential Direction

The aim of this study was to determine the fracture behavior of southern yellow pine (Pinus taeda L.) and red oak (Quercus falcata) wood under mode I loading in the tangential-radial and tangential-longitudinal crack propagation systems by a compact tension test method. The results of the study indi...

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Main Author: Arif Caglar Konukcu
Format: Article
Language:English
Published: University of Zagreb, Faculty of Forestry and Wood Technology 2022-01-01
Series:Drvna Industrija
Subjects:
Online Access:https://hrcak.srce.hr/file/413537
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author Arif Caglar Konukcu
author_facet Arif Caglar Konukcu
author_sort Arif Caglar Konukcu
collection DOAJ
description The aim of this study was to determine the fracture behavior of southern yellow pine (Pinus taeda L.) and red oak (Quercus falcata) wood under mode I loading in the tangential-radial and tangential-longitudinal crack propagation systems by a compact tension test method. The results of the study indicated that, in general, red oak had a significantly different fracture behavior than southern yellow pine for each of the two crack propagation systems. The fracture toughness was higher in the tangential-radial crack propagation system than that in the tangential-longitudinal crack system, but there was no significant difference between the two crack propagation systems for southern yellow pine. The specific fracture energy of the tangential-longitudinal crack propagation system for both wood species was significantly lower than that of the tangential-radial crack propagation system. It means that more energy per unit area for the tangential-radial crack propagation system was needed to separate a wood sample into two halves. The difference in the fracture behavior of wood by the crack propagation system can be explained by the structural features of the tested samples since the crack propagation of the tangentialradial system crosses the annual ring and wood fibers can bridge the crack surface.
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spelling doaj.art-d02f739e99a94736a808371c5a3af23e2022-12-22T04:14:39ZengUniversity of Zagreb, Faculty of Forestry and Wood TechnologyDrvna Industrija0012-67721847-11532022-01-0173444545210.5552/drvind.2022.213515Fracture Behavior of Wood Under Mode I Loading in Tangential DirectionArif Caglar Konukcu0Izmir Katip Celebi University, Faculty of Forestry, Department of Forest Industrial Engineering, Izmir, TurkeyThe aim of this study was to determine the fracture behavior of southern yellow pine (Pinus taeda L.) and red oak (Quercus falcata) wood under mode I loading in the tangential-radial and tangential-longitudinal crack propagation systems by a compact tension test method. The results of the study indicated that, in general, red oak had a significantly different fracture behavior than southern yellow pine for each of the two crack propagation systems. The fracture toughness was higher in the tangential-radial crack propagation system than that in the tangential-longitudinal crack system, but there was no significant difference between the two crack propagation systems for southern yellow pine. The specific fracture energy of the tangential-longitudinal crack propagation system for both wood species was significantly lower than that of the tangential-radial crack propagation system. It means that more energy per unit area for the tangential-radial crack propagation system was needed to separate a wood sample into two halves. The difference in the fracture behavior of wood by the crack propagation system can be explained by the structural features of the tested samples since the crack propagation of the tangentialradial system crosses the annual ring and wood fibers can bridge the crack surface.https://hrcak.srce.hr/file/413537fracturefracture toughnesssouthern yellow pinered oakspecific fracture energy
spellingShingle Arif Caglar Konukcu
Fracture Behavior of Wood Under Mode I Loading in Tangential Direction
Drvna Industrija
fracture
fracture toughness
southern yellow pine
red oak
specific fracture energy
title Fracture Behavior of Wood Under Mode I Loading in Tangential Direction
title_full Fracture Behavior of Wood Under Mode I Loading in Tangential Direction
title_fullStr Fracture Behavior of Wood Under Mode I Loading in Tangential Direction
title_full_unstemmed Fracture Behavior of Wood Under Mode I Loading in Tangential Direction
title_short Fracture Behavior of Wood Under Mode I Loading in Tangential Direction
title_sort fracture behavior of wood under mode i loading in tangential direction
topic fracture
fracture toughness
southern yellow pine
red oak
specific fracture energy
url https://hrcak.srce.hr/file/413537
work_keys_str_mv AT arifcaglarkonukcu fracturebehaviorofwoodundermodeiloadingintangentialdirection