Optimum dowel spacing for corner joints in 32-mm cabinet construction

Tankut, AN

Article | 2005 | FOREST PRODUCTS JOURNAL55 ( 12 ) , pp.100 - 104

The increased utilization of European 32-min cabinet construction in the Turkish furniture industry has highlighted the need for practical strength performance evaluation of case construction. A basic understanding of the influence of dowel spacing on corner joint strength performance in case construction is necessary to assist furniture manufacturers as they engineer their products. To date, limited research had been done. This paper presents results of evaluating the effect of dowel spacing on bending moment capacity of corner joints in 32-mm case construction. Laminated particleboard and laminated medium density fiberboard (MDF) . . .corner joints were tested under compression and tension loads. Experiments have shown that maximum moment is obtained in joints when the spacing between dowels is at least 96 mm. Also, statistical analysis of the test data indicated that joints loaded in tension and compression had significant differences at the 5 percent significance level in moment resistance since joint strength was strongly related to the internal bond strength of the board loaded in compression. In both tension and compression tests, MDF corner joints were stronger than particleboard corner joints Daha fazlası Daha az

Moment resistance of corner joints connected with different RTA fasteners in cabinet construction

Tankut, N

Article | 2006 | FOREST PRODUCTS JOURNAL56 ( 4 ) , pp.35 - 40

The fasteners used in case construction have a profound effect oil the appearance, strength, and durability of cabinets. Strength and performance data, however, are largely lacking for most of the proprietary fasteners, specifically for ready-to-assemble (RTA) fasteners and fastening systems used ill cabinet construction. Tests were carried out to determine the bending moment resistance of corner joints connected with different types of RTA fasteners so that the structure can safely resist the loads imposed upon them in service. Laminated particleboard and laminated medium density fiberboard (MDF) corner joints were tested under com . . .pression and tension loads. Results indicated that material type, loading type and fastener type have a significant effect on the strength of RTA connected joints. In general, tensile strength was greater than compressive strength for all types of RTA connected corner joints. Results also indicate in both tension and compression tests, laminated MDF corner joints were an average of 22 percent stronger than laminated particleboard corner joints. The joints constructed with MDF and the trapez connector with metal parts produced the highest strength values; the rafix joints constructed with particleboard were the weakest joints evaluated Daha fazlası Daha az

Design and testing of bookcase frames constructed with round mortise and tenon joints

Tankut, A | Denizli-Tankut, N | Gibson, H | Eckelman, C

Article | 2003 | FOREST PRODUCTS JOURNAL53 ( 07.Aug ) , pp.80 - 86

Previous work has shown that by using round mortise and tenon joints, durable maintenance-free school chairs and desks can be produced from largely waste local woody materials by cottage industries in remote regions of the world. Results of this previous work would suggest that by using this same method of construction, well-designed, durable, functional bookcases also could be produced from locally available small-diameter tree species and thin plywood or other thin panel materials. A number of panel and frame bookcases utilizing round mortise and tenon joints were constructed to evaluate their performance. Tests conducted on the r . . .esulting bookcase frames and shelves indicated that shelves constructed of thin plywood supported by small front and back shelf rails with ends joined to the corner posts with round mortise and tenon joints easily met critical shelf deflection criteria. The excellent deflection characteristics of the shelves were credited to the high degree of end fixity of the shelf rails that was obtained through the use of snug fitting round mortise and tenon joints Daha fazlası Daha az

Design and testing of wall cabinet frames constructed with round mortise-and-tenon joints

Tankut, Ali N. | Tankut, Nurgul | Eckelman, Carl A.

Article | 2007 | FOREST PRODUCTS JOURNAL57 ( 3 ) , pp.18 - 22

This study investigated the design, construction, testing, and performance characteristics of wall cabinets constructed with round mortise-and-tenon joints that are suitable for use in classrooms, school libraries, and homes. Four wall cabinets, utilizing round mortise-and-tenon joints, were constructed to evaluate their performance. Tests indicated that the attachment of thin plywood panels to the frames increased overall cabinet stiffness by 62 and 70 percent for red oak and yellow-poplar wall cabinets, respectively. Also, wood species was found to affect creep deflection. Overall, this study clearly demonstrated that wall cabinet . . .s constructed with round mortise-and-tenon joints were able to withstand normal service loads without loss of structural integrity or function Daha fazlası Daha az

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