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The Effect of Diameter and Prehole Clearance for Wooden Dowel on The Withdrawal Loads of Domestic Wood

국산재에 대한 나무못 직경과 천공 여척이 나무못 유지력에 미치는 영향

  • Cha, Jae Kyung (Department of Forest Products and Life Science, College of Forest science, Kookmin University)
  • 차재경 (국민대학교 임산생명공학과)
  • Received : 2016.07.07
  • Accepted : 2016.09.04
  • Published : 2016.09.25

Abstract

Wooden dowels are commonly used to join the wooden members together in many types of structures, But little information is available concerning their holding properties in domestic wood. This study was performed to determine the withdrawal loads and strengths on the effect of diameter of dowel and hole clearance. The test block was manufactured from 15 mm thick korean red pine and korean pine. The dowel was manufactured 6, 8 and 10 mm diameters from korean castanea, korean pine and tuliptree. Research reported here indicates that withdrawal loads increase, but withdrawal strengths decrease, in a linear fashion as the dowel diameter increases. This study also indicates that dowel withholding load and strength increase in a linear fashion as a hole clearance decreases.

나무못은 다양한 구조물의 목재부재들을 연결하는데 일반적으로 사용된다. 하지만 국산재의 나무못 유지력에 대한 자료는 매우 부족하다. 본 연구는 나무못의 직경과 천공여척이 유지력 특성에 미치는 영향에 대해 알아보기 위해 실시했다. 실험 블록은 두께 15 mm인 소나무와 잣나무 목재로 제작했다. 6, 8 및 10 mm 직경인 나무못은 밤나무, 잣나무 및 백합나무 목재로 각각 제작했다. 연구결과 나무못 직경이 증가하면 유지력은 선형으로 증가했지만 유지력 강도는 감소했다. 본 연구는 또한 천공여척이 작아질수록 유지력과 유지력 강도도 선형으로 증가하는 것을 보였다.

Keywords

References

  1. American Society for Testing and Materials. 1986. Standard test method for small clear specimens of timber. ASTM D 143. ASTM, Philadelphia, PA.
  2. American Society for Testing and Materials. 1986. Standard test method of testing mechanical fasteners in wood. ASTM D 1761. ASTM, Philadelphia, PA.
  3. Cha, J.K. 2016. A new apparatus development for withdrawal testing of wooden dowel. Forest and Humanity 28: 55-64.
  4. Eckelman, C.A. 1969. Engineering concepts of single-pin dowel joint design. Forest Products Journal 19(12): 52-60.
  5. Eckelman, C.A. 1971. Bending strength and moment-rotation characteristics of two pin moment resisting dowel joint. Forest Products Journal 21(3): 35-39.
  6. Eckelman, C.A., Erdil, Y.Z., Zhang, J. 2002. Withdrawal and bending strength of dowel joints constructed of plywood and oriented strandboard. Forest Products Journal 52(9): 66-74.
  7. Eckelman, C.A. and Cassens, D.L. 1985. Withdrawal strength of dowels from wood composites. Forest Products Journal 35(5): 55-60.
  8. Uysal, B. 2005. Withdrawal strength of various laminated veneer dowels from composite materials. Wood and Fiber Science 37(2): 213-219.