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The Influence of Wood Surface Microrelief on the Bond Quality

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V.I. Melekhov, N.S. Rudnaya

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The agglutination has great potential to increase wood using efficiency. The glued wood is widely used in construction, ship-building, furniture production, automobile construction and so on. Rough-sawn stocks sawed by buzz or gang saws have rather high initial roughness and low working accuracy. It requires generous overlength for the future mechanical adaptation and increases consumption of materials. The paper considers the influence of wood surface microrelief to the bond quality. The contact degree of joint faces of wood, the thickness of glue line, the unit pressure of assembly, bond quality for different wood species with various roughness of surface is determined. The bond quality increases if the gluing area grows. Therefore the gluing of the wood surfaces with raised roughness is accompanied with the real increasing of the gluing area due to the collapse of the getting-out of alignments in the contact zones. The glue line thickness of the bonded wood with raised roughness is located within the limits of the standard of the assembly at the glib joint. It is concluded that the increasing of wood using efficiency may be attained by decreasing of overlength for the primary mechanical adaptation in raw materials and rough-sawn stocks with high initial roughness due to excluding of milling operations at the stage of their preparation for gluing. The results of investigation confirm the efficiency of wood with raised roughness after re-sawing by buzz or gang saws.


V.I. Melekhov, Doctor of Engineering, Professor, N.S. Rudnaya, Teaching Assistant


Northern (Arctic) Federal University named after M. V. Lomonosov ::: Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russia; Ph.: +7 (8182) 21-61-68


wood, bond quality, microrelief, surface roughness, contact degree, thickness of glue line, deformation, assembly.


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The Influence of Wood Surface Microrelief on the Bond Quality


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