Effects of adhesive and loading directions on the load-carrying capacity of V-nails

  • Hamid R. Taghiyari
  • Mohammad Ghofrani
  • Farzad Arbabi Ghamsari


Effects of tensile and compression loading on the overall strength of two miter frame corner joints, namely V-nail and dovetail joints, with and without adhesive were studied for medium-density fiberboard and particleboard. Two sizes of V-nails were chosen, sizes 7 and 10. Tensile and compression load-carrying capacity values were measured on the internal and external corners of the joints. Results showed that both wood-composites had greater load-carrying capacities for compression stress in comparison to tensile stress. Medium-density fiberboard demonstrated higher strength compared to particleboard specimens because of its higher compactness of fibers and more integrity in the composite matrix. Application of adhesive resulted in a significant increase in the strength of all joints and both composites. The increase in medium-density fiberboard was significantly higher in comparison to particleboard because lower permeability in medium-density fiberboard did not let adhesive to be uselessly penetrated into the texture. In particleboard specimens, however, adhesive penetrated into the voids and spaces in the composite, and the adhesive line was weakened between the surfaces of the composite bodies. It was concluded that V-nails are recommended for craftsmen in case adhesive is used. However, dovetail joints provide higher strength if the production process necessitates not to use adhesive in joints.


Ada, R. 2013. Cluster analysis and adaptation study for safflower genotypes. Bulgarian Journal of Agricultural Science 19:103-109.

Ching, S.W.; Yiren, W. 1994. A study on bending moment resistance of particleboard corner joint in carcass furniture. Department of Forest Products Industry, National Chia-yi Institute of Agriculture Taiwan Forest Products Industries 13(4):600-610.

Dalvand, M.; Ebrahimi, Gh.; Rostampour-Haftkhani, A.; Maleki, S. 2013. Analysis of factors affecting diagonal tension and compression capacity of corner joints in furniture frames fabricated with dovetail key. Journal of Forestry Research 24(1):155-168.

Eckelman, C.A. 1997. Bending strength of corner joints constructed with injection-molded splines. Forest Products Journal 47(4):89-92.

Eckelman, C.A. 2003. Textbook of product engineering and strength design of furniture. Purdue University Press, West Lafayette, IN, USA.

Eshaghi, S.; Faezipour, M.; Taghiyari, H.R. 2013. Investigation on lateral resistance of joints made with drywall and sheet metal screws in bagasse particleboard and comparison with that of commercial MDF. Maderas-Cienc Tecnol 15(2):127-140.

Efe, H.; Kasal, A. 2000. Tabla tipi kavelai Kose birlestirmelerde tutkal cesidinin cekme direncine etkileri. Journal Polytech 3(4):67-72.

Efe, H.; Kasal, A.; Gurleyen, L. 2002. The Compressive strength of corner joints with dowel bonded with various types of adhesives on case construction. The Journal of The Industrial Arts Education 10(10):39-56.

Figueroa, M.; Bustos, C.; Dechent, P.; Reyes, L.; Cloutier, A.; Giuliano, M. 2012. Analysis of rheological and thermo-hygro-mechanical behaviour of stress-laminated timber bridge deck in variable environmental conditions. Maderas-Cienc Tecnol 14(3):303-319.

Maleki, S.; Derikvand, M.; Dalvand, M.; Ebrahimi, Gh. 2012. Load-carrying capacity of mitered furniture corner joints with dovetail keys under diagonal tension load. Turkish Journal of Agriculture and Forestry 36:636-643.

Smardzewski, J.; Prekard, S. 2002. Stress distribution in disconnected furniture joints. Electronic Journal of Polish Agricultural Universities, Wood Technology Series 5:1-7.

Vassiliou, V.; Barboutis, I. 2009. Bending strength of furniture corner joints constructed with insert fittings. Annals of Warsaw University of Life Sciences – SGGW. Forestry and Wood Technology67:268-274.
How to Cite
Taghiyari, H. R., Ghofrani, M., & Arbabi Ghamsari, F. (1). Effects of adhesive and loading directions on the load-carrying capacity of V-nails. Maderas. Ciencia Y Tecnología, 19(1), 113-129. Retrieved from http://revistas.ubiobio.cl/index.php/MCT/article/view/2667