Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method

Wood welding technique is a newer way of connecting wooden parts without using glue with the temperature usually achieved by friction of elements that are connected. During the welding process, due to the influence of pressure and temperature, the surface wood layer (lignin and polyoses) is melted....

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Autores principales:	Ivica Župčić, Marko Mijaković, Ivica Grbac
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2011
Materias:	beech welding of solid and modified wood strength of welded joints longitudinal bonding Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/220c1770a4e74cfba7bb9ad45f7fe7cd
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spelling	oai:doaj.org-article:220c1770a4e74cfba7bb9ad45f7fe7cd2021-12-02T02:30:01ZInfluence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method0012-67721847-1153https://doaj.org/article/220c1770a4e74cfba7bb9ad45f7fe7cd2011-03-01T00:00:00Zhttp://hrcak.srce.hr/file/98487https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153Wood welding technique is a newer way of connecting wooden parts without using glue with the temperature usually achieved by friction of elements that are connected. During the welding process, due to the influence of pressure and temperature, the surface wood layer (lignin and polyoses) is melted. The research is based on an examination of the influence of thermal modification and the impact of water (room temperature) on the strength of welded joints. Test samples were longitudinally connected turned elements made of solid beech wood. Thermally modified wood can be successfully welded. The results showed that increasing the temperature of thermal modifi cation and immersing the samples in cold water (20 °C) cause the decrease of embedded force and tensile strength, respectively. The research has also shown that the increase in weight loss during thermal modification reduces the tensile forces. With samples immersed in cold water, the highest joint strength was recorded in welding thermally modified wood at 140 °C and the lowest joint strength was recorded in welding thermally modified wood at 180 °C.Ivica ŽupčićMarko MijakovićIvica GrbacUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticlebeechwelding of solid and modified woodstrength of welded jointslongitudinal bondingForestrySD1-669.5ENDrvna Industrija, Vol 62, Iss 1, Pp 9-17 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	beech welding of solid and modified wood strength of welded joints longitudinal bonding Forestry SD1-669.5
spellingShingle	beech welding of solid and modified wood strength of welded joints longitudinal bonding Forestry SD1-669.5 Ivica Župčić Marko Mijaković Ivica Grbac Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method
description	Wood welding technique is a newer way of connecting wooden parts without using glue with the temperature usually achieved by friction of elements that are connected. During the welding process, due to the influence of pressure and temperature, the surface wood layer (lignin and polyoses) is melted. The research is based on an examination of the influence of thermal modification and the impact of water (room temperature) on the strength of welded joints. Test samples were longitudinally connected turned elements made of solid beech wood. Thermally modified wood can be successfully welded. The results showed that increasing the temperature of thermal modifi cation and immersing the samples in cold water (20 °C) cause the decrease of embedded force and tensile strength, respectively. The research has also shown that the increase in weight loss during thermal modification reduces the tensile forces. With samples immersed in cold water, the highest joint strength was recorded in welding thermally modified wood at 140 °C and the lowest joint strength was recorded in welding thermally modified wood at 180 °C.
format	article
author	Ivica Župčić Marko Mijaković Ivica Grbac
author_facet	Ivica Župčić Marko Mijaković Ivica Grbac
author_sort	Ivica Župčić
title	Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method
title_short	Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method
title_full	Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method
title_fullStr	Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method
title_full_unstemmed	Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method
title_sort	influence of thermal modification of beech on the strength of longitudinally connected turned elements by rotational welding method
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2011
url	https://doaj.org/article/220c1770a4e74cfba7bb9ad45f7fe7cd
work_keys_str_mv	AT ivicazupcic influenceofthermalmodificationofbeechonthestrengthoflongitudinallyconnectedturnedelementsbyrotationalweldingmethod AT markomijakovic influenceofthermalmodificationofbeechonthestrengthoflongitudinallyconnectedturnedelementsbyrotationalweldingmethod AT ivicagrbac influenceofthermalmodificationofbeechonthestrengthoflongitudinallyconnectedturnedelementsbyrotationalweldingmethod
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Influence of Thermal Modification of Beech on the Strength of Longitudinally Connected Turned Elements by Rotational Welding Method

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