The Effect of end Distance and Number of Ready-to-Assemble Furniture Fasteners on Bending moment Resistance of Corner Joints
Keywords:Bending moment resistance, furniture joint, end distance, laminated particleboard, cam fastener, nonglued wooden dowel
AbstractAlthough they are widely used by the furniture industry, ready-to-assemble (RTA) furniture fasteners are a relatively new style of joinery. The object of this study was to investigate the effect of end distance of cam-lock RTA fasteners and nonglued wooden dowels on the splitting and bending moment resistance, respectively, of RTA corner joints. Laminated particleboard, cam fasteners, and wooden dowels were used for specimen construction (as used in the furniture industry). In two studies, L-shaped joint specimens 760 mm long were tested in compression. The first study showed that end splits in panels were eliminated when cam fasteners were located 60 mm from the member ends. In the second study, specimens with two cam fasteners supported by 2, 3, 4, or 5 nonglued dowels were tested. These specimens had significantly higher bending moment resistance than comparable joints that used only cam fasteners but no dowels. Thus, it was concluded that unglued dowels used to position parts for assembly substantially reinforce joints constructed with cam fasteners.
Albin R, Muller M, Scholze H (1987) Investigations on the strength of corner joints in case-type furniture. Holz Roh Werkst 45:171-178nASTM (2002) D1037. Standard test methods for evaluating properties of wood-base fiber and particle panel materials. American Society for Testing and Materials, West Conshohocken, PA.nBachmann G, Hassler W (1975) The strengths of various furniture constructions, their components, and fasteners. Part I. (Die Festigkeit von Verschiedenen Mobelkonstruktionen, ihren Elementen und Verbindungsmitteln. Teil 1.). Holztechnologie 6(4):210-221nFPL (1999) Wood handbook—Wood as an engineering material. Gen Tech Rep FPL—GTR-113. USDA For Serv Forest Products Laboratory, Madison, WI. 463 pp.nHo Ch, Eckelman CA (1994) The use of performance tests in evaluating joint and fastener strength in case furniture. Forest Prod J 44(9):47-53.nJoscak P, Cernok A (2002) Unosnost demontovatelnych nabytkovych spojov z DTD (Load capacity of RTA furniture joints made from particleboard). Page 15 in Proc Nabytok 2002, Oct 24-25, 2002, Technical University of Zvolen, Slovakia, ISBN 80-228-1193-9.nLiu W, Eckelman CA (1998) Effect of number of fasteners on the strength of corner joints for cases. Forest Prod J 48(1):93-95.nRajak ZI (1989) Efficient use of screws in the construction of corner joints for case goods. MS thesis, Purdue University, IN. 124 pp.nRajak ZI, Eckelman CA (1996) Analysis of corner joints constructed with large screws. J Trop Forest Prod 2(1): 80-92.nSmardzewski J, Prekrad S (2002) Stress distribution in disconnected furniture joints. Electronic Journal of Polish Agricultural Universities, Series Wood Technology, Volume 5/2002, Issue 2, ISSN 1505-0297.nTankut N (2006) Moment resistance of corner joints connected with different RTA fasteners in cabinet construction. Forest Prod J 56(4):35-40.nZhang J, Eckelman CA (1993a) The bending moment resistance of single-dowel corner joints in case construction. Forest Prod J 43(6):19-24.nZhang J, Eckelman CA (1993b) Rational design of multidowel corner joints in case construction. Forest Prod J 43 (11/12):52-58.n
The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:
1. All proprietary rights other than copyright, such as patent rights.
2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.
3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.