Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom

Physical and mechanical properties of beech wood (Fagus sylvatica L.) from trees fallen in ice storm were determined. The properties were studied in parallel green and dried beech-wood samples, systematically collected along the radius and at different height levels of the stem. The stiffne...

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Autores principales:	Željko Gorišek, Denis Plavčak, Dominika Gornik Bučar, Maks Merela, Katarina Čufar, Aleš Straže
Formato:	article
Lenguaje:	DE EN ES FR SL
Publicado:	Slovenian Forestry Institute 2017
Materias:	Forestry SD1-669.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/6cfb2c69949a4436a1f358d958d83305
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spelling	oai:doaj.org-article:6cfb2c69949a4436a1f358d958d833052021-11-15T12:34:37ZFizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom2335-31122335-395310.20315/ASetL.112.2https://doaj.org/article/6cfb2c69949a4436a1f358d958d833052017-01-01T00:00:00Zhttp://dirros.openscience.si/IzpisGradiva.php?id=6408https://doaj.org/toc/2335-3112https://doaj.org/toc/2335-3953 Physical and mechanical properties of beech wood (Fagus sylvatica L.) from trees fallen in ice storm were determined. The properties were studied in parallel green and dried beech-wood samples, systematically collected along the radius and at different height levels of the stem. The stiffness of the timber was comparatively tested with static 4-point bending and non-destructively by measuring the speed of ultrasound, and by determining the frequency response. The bending and shear strengths were additionally determined along the grain, as well as compression strength in all anatomical directions of wood. In blown down trees with still partly preserved root system, active crown and sufficient capillary water flow, we could not detect any reduction of mechanical properties due to deterioration. The density and mechanical properties, except transverse compression strength, increased with increasing height in the tree and radially from the pith to the cambium. They were always better in dried than in green wood. The reliability of non-destructive methods was greater in the evaluation of dried wood. We recommend visual wood characterisation in addition to the use of non-destructive methods for strength assessment of wood.Željko GorišekDenis PlavčakDominika Gornik BučarMaks MerelaKatarina ČufarAleš StražeSlovenian Forestry InstitutearticleForestrySD1-669.5Environmental sciencesGE1-350DEENESFRSLActa Silvae et Ligni, Vol 112, Pp 7-20 (2017)
institution	DOAJ
collection	DOAJ
language	DE EN ES FR SL
topic	Forestry SD1-669.5 Environmental sciences GE1-350
spellingShingle	Forestry SD1-669.5 Environmental sciences GE1-350 Željko Gorišek Denis Plavčak Dominika Gornik Bučar Maks Merela Katarina Čufar Aleš Straže Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
description	Physical and mechanical properties of beech wood (Fagus sylvatica L.) from trees fallen in ice storm were determined. The properties were studied in parallel green and dried beech-wood samples, systematically collected along the radius and at different height levels of the stem. The stiffness of the timber was comparatively tested with static 4-point bending and non-destructively by measuring the speed of ultrasound, and by determining the frequency response. The bending and shear strengths were additionally determined along the grain, as well as compression strength in all anatomical directions of wood. In blown down trees with still partly preserved root system, active crown and sufficient capillary water flow, we could not detect any reduction of mechanical properties due to deterioration. The density and mechanical properties, except transverse compression strength, increased with increasing height in the tree and radially from the pith to the cambium. They were always better in dried than in green wood. The reliability of non-destructive methods was greater in the evaluation of dried wood. We recommend visual wood characterisation in addition to the use of non-destructive methods for strength assessment of wood.
format	article
author	Željko Gorišek Denis Plavčak Dominika Gornik Bučar Maks Merela Katarina Čufar Aleš Straže
author_facet	Željko Gorišek Denis Plavčak Dominika Gornik Bučar Maks Merela Katarina Čufar Aleš Straže
author_sort	Željko Gorišek
title	Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
title_short	Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
title_full	Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
title_fullStr	Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
title_full_unstemmed	Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
title_sort	fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom
publisher	Slovenian Forestry Institute
publishDate	2017
url	https://doaj.org/article/6cfb2c69949a4436a1f358d958d83305
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Fizikalne in mehanske lastnosti svežega in osušenega lesa v bukovih deblih, izruvanih med žledolomom

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