Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods

The paper presents a comparison between various methods of mode I critical stress intensity factor KIC calculations of beech wood in the TL configuration. The first method is the stress intensity factor extrapolation to the distance of 0 mm from the crack tip; the second method is the use of the J i...

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Autor principal:	Miran Merhar, Dominika Gornik Bučar, Bojan Buča
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2013
Materias:	fracture toughness mode I critical stress intensity factor fracture mechanics beech wood Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/25f226bcebdb4f7d99806e1d6880ec19
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spelling	oai:doaj.org-article:25f226bcebdb4f7d99806e1d6880ec192021-12-02T02:21:22ZMode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods10.5552/drind.2013.12530012-67721847-1153https://doaj.org/article/25f226bcebdb4f7d99806e1d6880ec192013-09-01T00:00:00Zhttp://hrcak.srce.hr/file/159336https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153The paper presents a comparison between various methods of mode I critical stress intensity factor KIC calculations of beech wood in the TL configuration. The first method is the stress intensity factor extrapolation to the distance of 0 mm from the crack tip; the second method is the use of the J integral; and the third method is based on the differences in deformation energies from which the strain energy release rate per unit of crack propagation length was obtained. The fourth method is the calculation of material deformation around the crack or the displacement of the triangle element node; and the fifth method uses a generally known equation for the CT specimen for plane-strain conditions in isotropic material. Using the finite element method, it was found that the J integral was least sensitive to the size and shape of the elements. It was used to calculate the critical stress intensity factor KIC for beech wood in a TL configuration. The average value is 0.56 MPa√m with a standard deviation of 0.047 MPa√m.Miran Merhar, Dominika Gornik Bučar, Bojan BučaMiran Merhar, Dominika Gornik Bučar, Bojan BučaMiran Merhar, Dominika Gornik Bučar, Bojan BučaUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticlefracture toughnessmode I critical stress intensity factorfracture mechanicsbeech woodForestrySD1-669.5ENDrvna Industrija, Vol 64, Iss 3, Pp 221-229 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	fracture toughness mode I critical stress intensity factor fracture mechanics beech wood Forestry SD1-669.5
spellingShingle	fracture toughness mode I critical stress intensity factor fracture mechanics beech wood Forestry SD1-669.5 Miran Merhar, Dominika Gornik Bučar, Bojan Buča Miran Merhar, Dominika Gornik Bučar, Bojan Buča Miran Merhar, Dominika Gornik Bučar, Bojan Buča Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods
description	The paper presents a comparison between various methods of mode I critical stress intensity factor KIC calculations of beech wood in the TL configuration. The first method is the stress intensity factor extrapolation to the distance of 0 mm from the crack tip; the second method is the use of the J integral; and the third method is based on the differences in deformation energies from which the strain energy release rate per unit of crack propagation length was obtained. The fourth method is the calculation of material deformation around the crack or the displacement of the triangle element node; and the fifth method uses a generally known equation for the CT specimen for plane-strain conditions in isotropic material. Using the finite element method, it was found that the J integral was least sensitive to the size and shape of the elements. It was used to calculate the critical stress intensity factor KIC for beech wood in a TL configuration. The average value is 0.56 MPa√m with a standard deviation of 0.047 MPa√m.
format	article
author	Miran Merhar, Dominika Gornik Bučar, Bojan Buča Miran Merhar, Dominika Gornik Bučar, Bojan Buča Miran Merhar, Dominika Gornik Bučar, Bojan Buča
author_facet	Miran Merhar, Dominika Gornik Bučar, Bojan Buča Miran Merhar, Dominika Gornik Bučar, Bojan Buča Miran Merhar, Dominika Gornik Bučar, Bojan Buča
author_sort	Miran Merhar, Dominika Gornik Bučar, Bojan Buča
title	Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods
title_short	Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods
title_full	Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods
title_fullStr	Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods
title_full_unstemmed	Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods
title_sort	mode i critical stress intensity factor of beech wood (fagus sylvatica) in a tl configuration: a comparison of different methods
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2013
url	https://doaj.org/article/25f226bcebdb4f7d99806e1d6880ec19
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Mode I Critical Stress Intensity Factor of Beech Wood (Fagus Sylvatica) in a TL Configuration: A Comparison of Different Methods

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