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Investigation of Welded Joints with Linear Turned Beech Elements

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Author(s): ŽUPČIĆ, Ivica | MIJAKOVIĆ, Marko | BOGNER, Andrija | GRBAC, Ivica

Journal: Acta Silvatica & Lignaria Hungarica
ISSN 1786-691X

Volume: 6;
Start page: 195;
Date: 2010;
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Keywords: wood welding | tensile strength | beech | longitudinal bonding of turned elements

ABSTRACT
Welding of wood is a process where chemical and physical reactions take place, heat isformed during the friction, which melts and softens the structure of wood, and a firm joint is formedby cooling of the melt.The paper discusses the present knowledge about wood welding and the results of wood weldingresearch obtained in the Faculty of Forestry, University of Zagreb. The results were obtained onsamples (solid beech wood) with tapered entrance holes 9 mm in diameter, the bottom of the hole7 mm in diameter and dowel lengths of 20 mm and 30 mm, as well as samples with 8 mm holediameters and dowel lengths of 20 mm and 30 mm. The tensile strength of welded joints was analysed.The analysis results show that there is a big difference in tensile strength between the samples with 20and 30 mm long dowels and profile holes. 30 mm long dowels give better results than the 20 mmdowels.
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