Abstract
Since staple is the most used fastener in furniture frame, its holding capacity in solid wood joints is need to be known. Therefore, lateral shear resistance capacity of one stapled and one-row multi stapled joints con-structed from Scotch pine, alder, and beech were investigated. Results showed that the joints constructed from beech with a density of 540 kg/m3 yielded 4893 N, the 4 staples joints constructed from alder with a density of 510 kg/m3 yielded 4487 N, and the 4 staples joints constructed from Scotch pine with a density of 450 kg/m3yielded 3498 N. Three and two staples connected joints also indicated decreasing trend when changing wood from beech to alder and Scotch pine. Results also indicated that increasing number of staple from 2 to 4 in one-row joints increased force of the joints. Two prediction equations were derived to predict the shear of one-row multi stapled wood joints. Both equations yielded remarkable results compared to actual laboratory test results
Highlights
Solid wood had been used in furniture frame for centuries regardless paying attention on engineering design
Shear force of one stapled and one-row multi stapled joints constructed from Scotch pine, alder and beech were investigated
The staple holding resistance of one stapled joints constructed from beech with a higher density of 540 kg/m3 was significantly 191 N greater than that of one stapled joints constructed from alder with a density of 510 kg/m3 and significantly 424 N greater than that of the one stapled joints constructed from Scotch pine with the lowest density 450 kg/m3
Summary
Solid wood had been used in furniture frame for centuries regardless paying attention on engineering design. It is rapidly becoming serious issue for using wood material in cost-effective way without waste. The engineering data concerning the lateral resistance of stapled joints is having more importance for designing and reengineering the products of furniture manufacturers to meet product strength and durability (Demirel et al 2018). Staple is one of the those fasteners (Demirel 2012), and it is driven into wood members to assemble them with an air gun. It is fast and easy to use as a fastener in upholstered furniture frame manufacturing (Zhang and Maupin 2004 , Demirel et al 2013)
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