The Impact of Dovetail Angle in Single Dovetail Joints on Diagonal Compression Strength of Corner Joints for Box-Type Furniture

摘要

This study aims to determine the impacts of dovetail angle for dovetail joints on the diagonal compression strength of box-type furniture corner joints prepared in different woods, with different dovetail angles, and with different adhesives. For this reason, after drilling joints of 75 degrees, 78 degrees, 81 degrees, 84 degrees, and 87 degrees on Oriental beech, European oak, Scotch pine, and medium-density fiberboard (MDF) samples, a diagonal compression test was applied on corners glued with polyvinyl acetate (PVAc) and polyurethane (Desmodur-vinyl trieketonol acetate [ D-VTKA]) according to the ASTM D1037 standard. The highest result for dovetail diagonal compression strength was observed in the samples of Oriental beech (0.321 N mm(-2)), while the lowest was found in the samples of MDF (0.154 N mm(-2)) for wood types. With respect to adhesives, D-VTKA yielded the best results (0.268 N mm(-2)), while PVAc gave the worst results (0.252 N mm(-2)). Regarding angle types, the best result was obtained from the samples at 848 (0.302 N mm(-2)) and the worst from the samples at 758 (0.207 N mm(-2)) for dovetail joints. For the interaction of wood type, adhesive, and dovetail angle, the highest diagonal compression strength was found in the samples of Oriental beech + 81 degrees + D-VTKA (0.445 N mm(-2)), while the lowest value was observed in MDF + 78 degrees + D-VTKA (0.128 N mm(-2)). In conclusion, the angles and adhesives have significant effects on the corner joints of box-type furniture.