Study on the tensile and compression tension-carrying capacity of corner V-nails

Taghiyari, Hamid Reza; Ghofrani, Mohammad; Arbabi Ghamsari, Farzad

doi:10.22092/ijwpr.2016.106763

Document Type : Research Paper

Authors

¹ Associate Prof., Wood Science and Technology Department, The Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran

² M.Sc., Wood Science and Technology Department, The Faculty of Civil Engineering, Shahid Rajaee Teacher Training University Tehran

https://doi.org/10.22092/ijwpr.2016.106763

Abstract

The present research project was carried out to find out tension-carrying capacity of corner miter V-joints in tensile and compression directions to be compared with those of dovetail joints. Variables included the type of wood-composites to produce the joints (MDF and particleboard), the number of V-nail in each joint (2, 3, and 4 V-nails), and the height of V-nails (7 and 10 mm). Separate sets of joints were produced with and without polyvinyl acetate resin. Results demonstrated that the tension-carrying capacity under compression tension was significantly higher than those in the tensile tension. Moreover, MDF joints showed higher tension-carrying capacity in comparison to those made from particleboard. Joints with resin were significantly stronger than those without resin. Increase in the number of V-nails resulted in an improvement in the tension-carrying capacity in both directions. Based on the results of the present research project, it was concluded that V-nails are preferred to dovetail joints from different perspectives, including their lower production expenses, lack of need for an extra step to mill the joint so that joint bits be inserted into, fast and easy installation of V-joint in one-step process, as well as higher tension-carrying capacity. Based on the obtained results indicating the maximum tension-carrying capacity of 13.7 MPa and 28 MPa for V-nails without and with adhesive, respectively, it was concluded that 4 V-nails with 10 mm in height in MDF joint-members would be recommended for joints without resin. In case of joints with resin, MDF joint-members with 3 V-nails of 10 mm would provide the highest tension-carrying capacity for craftsmen and producers of furniture and cabinets.

Keywords

Main Subjects

Mechanical conversion of wood and wooden fittings

References

- Altun, S., Burdurlu, E. & Kılıç, M., 2010. Effect of adhesive type on the bending moment capacity of miter frame corner joints. BioResources, 5(3), 1473-1483.

- Atar, M., Ozcifci, A., Altinok, M. and Celikel, U., 2009. Determination of diagonal compression and tension performances for case furniture corner joints constructed with wood biscuits. Materials & Design. 30: 665-670.

- Dalvand, M., Ebrahimi, GH. Rostampour Haftkhani, A. and Maleki, S., 2012. Analysis of factors affecting diagonal tension and compression capacity of corner joints in furniture frame fabricated with dovetail key, Journal of Forestry Research. 24(1)155-168- Ebrahimi, gh, 2008. Engineering Design of Furniture Structure. Press of uni. Tehran.

-European standard, 1993. EN 310: Wood-Based Panels. Determination of Modulus of Elasticity in Bending and of Bending Strength[English version].

- European standard, 1993. EN 319: Particleboards and Fibreboards. Determination of tensile strength perpendicular to the plane of the board [English version].

- European standard, 1993. EN 323: Wood-Based Panels.Determination of density [English version].

- Kasal, A., 2008. Effect of the number of screws and screw size on moment capacity of furniture corner joints in case construction. Forest products journal, 58(6), 36.‏

- Lashgari, A., Khodayari, P. and Mohamadi, S.A., 2012. Withdrawal strength and bending resistance of L -shaped nail ′s joint in particleboard and MDF, Iranian Journal of Wood and Paper Science Research Vol. 27 No. (4), 2012.

- Maleki, S., Dalvand, M., Haftkhani, A.R. and Faezipour, M., 2013. The effect of adhesive types and dovetail fitting height on stress carrying capacity of Miter Frame corner joints constructed of particleboard and Medium Density Fiberboard (MDF), Iranian Journal of Wood and Paper Industries, 66(2):203-214.

- Maleki, S., Derikvand, M., Dalvand, M., & Ebrahimi, G., 2012. Load carrying capacity of mitered furniture corner joints with dovetail keys under diagonal tension load. Turkish Journal of Agriculture and Forestry, 36(5), 636-643.‏

- Ozkaya, K., Burdurlu, E., Ilce, A. C., & Ciritcioglu, H. H., 2010. Diagonal tensile strength of an oriented strand-board (OSB) frame with dovetail corner joint. BioResources, 5(4), 2690-2701.‏

- Taghiyari HR, Ghofrani M, Arbabi Ghamsari F., 2017. Effects of adhesive and loading directions on the load-carrying capacity of V-nails. Maderas, Ciencia y tecnologia 19(1): 113 – 124..

Study on the tensile and compression tension-carrying capacity of corner V-nails

References

References

Volume 31, Issue 4 - Serial Number 57January 2017Pages 621-633

Volume 31, Issue 4 - Serial Number 57
January 2017
Pages 621-633