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題 名 | 竹材複合嵌板之性質研究 (第1 報):靜曲性質 |
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作 者 | 王松永; 周應松; | 書刊名 | 林產工業 |
卷 期 | 2:2 1983.06[民72.06] |
頁 次 | 頁17-31 |
分類號 | 474.5 |
關鍵詞 | 竹材; 性質; 嵌板; 複合; 靜曲; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究係為探討輕量化之竹材複合嵌板之靜曲性質,在此以竹材合板為表底層材料,聚脲樹脂及聚苯乙烯樹脂之低發泡體,空氣層為心材,膠合而成竹材複合嵌板,再進行其靜曲性質試驗,得到次述之結果。(1)各複合嵌板之氣乾比重均較表底材料減低約17.5%~84.5%。有輕量化之效應。(2)複合嵌板之靜曲強度(σb)均會隨其構成特性係數(t_1/t_3)^2或(A%)^2增加而呈直線狀減低,可以式(1)~(5)表示。(3)複合嵌板之靜曲彈性係數(Eb)均會隨其構成特性係數(t_1/t_3)^3或(A%)^3增加而直線狀減低,可以式(6)~(10)表示。(4)複合嵌板之靜曲剛性(EI)會較表底層材料單體狀態時為大,其增大趨勢(EI/E_0 I_0)會隨(h/t)之增加而呈二次式關係增大,可以式19~23表示。E_0 I_0為表底層材料在單體狀態下之靜曲剛性。 |
英文摘要 | The purpose of this study is to investigate the behavior s of lower density bamboo composite panels in static bending test, The composite pauels prepared for this test were constructed by using ply-bamboo as face and back layers, and using polgarethane foam or polystyrene foam or with nothing (hellow) as core. RF resin was used to fasten the face and back layers to the core. The static bending strength (MOR) and modulus of elasticity (MOE) of the composite panels were measured according to CNS 454 Standard. Results obtained can be summarized as follows: (1) The specific gravity of composite panels were about 17.5% to 84.5% lower than those of face and back layer materials. (2) Static bending strength (MOR) of the composite panels decreased linearly with the increasing of construction coefficients (t_2/t_1)^2 or (A%)^2. Their relationship could be shown by the experimental formulas (1) to (5). (3) Modulus of elasticity (MOE) of the composited panels decreased linearly with the increasing of construction coefficients (t_2/t_1)^3 or (A%)^3. Their relafionship could be shown by the experimental formulas (6) to (10). (4) Static bending stiffness (EI) of the composite panels were higher Than those of face and back layer materials. The values of EI/E_0 I_0 increased with the increasiog of h/t values following an exponentia curve. Their relationships could be shown by the experimental formulas (19) to (23). whiIe E_0 I_0 being the static bending stiffness of face and back layer materials at isolated condition. |
本系統中英文摘要資訊取自各篇刊載內容。