유리섬유로 보강된 제재목의 기계적 성질에 대한 연구
Study on the Mechanical Properties of Lumber Reinforced with Glass-Fiber
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
This research examined the technical feasibility of composite that had two layers of fiberglass reinforcement to enhance the load carrying capacity of lumber. Specimens were prepared from standard lumber made of thinning crop trees such as Larix kaempferi, Pinus koraiensis, and P. rigida. Results indicated that bending properties, hardness, and wood screw withdrawal load of low density lumber from the P. koraiensis increased as the number of layers of fiberglass reinforcement increased. Composite produced by VARTM method showed the MOE increased in all specimens, while the MOR differed on the location, whether the 2-layers of FRP is put on tensile zone or compressive zone. The MOR of high density lumber from Larix kaempferi and P. rigida decreased when they placed into tensile zone, but low density lumber from P. koraiensis increased in same location. The bending toughness only increased high density lumber of Larix kaempferi as the number of layers of fiberglass reinforcement increased. The technique developed by this study may increase an opportunity to use small diameter log with low density for commercial purposes.
Abstract
This research examined the technical feasibility of composite that had two layers of fiberglass reinforcement to enhance the load carrying capacity of lumber. Specimens were prepared from standard lumber made of thinning crop trees such as Larix kaempferi, Pinus koraiensis, and P. rigida. Results indicated that bending properties, hardness, and wood screw withdrawal load of low density lumber from the P. koraiensis increased as the number of layers of fiberglass reinforcement increased. Composite produced by VARTM method showed the MOE increased in all specimens, while the MOR differed on the location, whether the 2-layers of FRP is put on tensile zone or compressive zone. The MOR of high density lumber from Larix kaempferi and P. rigida decreased when they placed into tensile zone, but low density lumber from P. koraiensis increased in same location. The bending toughness only increased high density lumber of Larix kaempferi as the number of layers of fiberglass reinforcement increased. The technique developed by this study may increase an opportunity to use small diameter log with low density for commercial purposes.
참고문헌 (17)
- American Society for Testing and Materials, "Standard test method of testing small clear specimens of timber, ASTM D 143", ASTM, ~ (1986)
- American Society for Testing and Materials, "Standard test method of evaluating the properties of wood-base fiber and particle panel materials, ASTM D 1037", ASTM, ~ (1986)
- American Society for Testing and Materials, "Standard test method for toughness of plywood, ASTM D 3499", ~ (1986)
- Biblis, E.J., "Flexural properties of southern pine plywood overlaid with fiberglass-reinforced plastic", Forest Prod. J., 50(4), pp.34~36 (2000)
- Cai, Z., "Selected properties of MDF and flakeboard overlaid with fiberglass mat", Forest Prod. J., 56(11), pp.142~146 (2006)
- Davids, W. G, "Fatigue of glulam beams with fiber-reinforced polymer tension reinforcing", Forest Prod. J., 55(1), pp.93~101 (2005)
- Gardner, D. J., "Adhesive bonding of pultruded fiber-reinforced plastic to wood", Forest Prod. J., 44(5), pp.62~66 (1994)
- Hoyle, R.J., "Steel-reinforced wood beam design", Forest Prod.J., 25(4), pp.17~23 (1975)
- Lopez-andino, R., "Adhesive bonding of eastern hemlock glulam panels with E-glass", vinyl ester reinforcement, 2000, pp.50(11), 43~47
- Pirvu, A., "Carbon fiber-vinyl ester composite reinforcement of wood using the VARTM", SCRIMP fabrication process, 2004, pp.25, 1257~1265
- Rowlands, R.E., "Fiber-reinforced wood composites", Wood and fiber science, 18(1), pp.39~57 (1986)
- Saucier, J. R., "Structural particleboard reinforced with glass fiber- progress in its development", Forest Prod. J., 25(9), pp.69~72 (1975)
- Smulski, S. J., "Flexural behavior of glass fiber reinforced hardboard", Wood and fiber science, 19(3), pp.313~327 (1987)
- Soltis, L.A., "Fiberglass reinforced bolted wood connections", Forest Prod. J., 48(9), pp.63~67 (1998)
- Spaun, F.D., "Reinforcement of wood with fiberglass", Forest Prod. J., 31(4), pp.26~33 (1981)
- 차재경, "VARTM(Vacuum Assisted Resin Transfer Molding) 방법에 의해 목재 및 파티클보드를 유리섬유로 보강한 복합소재의 성질", 목재공학, 35(3), pp.29~35 (2007), 한국목재공학회
- 차재경, "국산 소경재의 휨 성질을 이용한 충격에너지와 최대하중까지 일-에너지 예측연구", 한국가구학회지, 19(5), pp.350~357 (2008), 한국가구학회