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題名 | 木釘接合抗彎疲勞強度之研究=Study on the Bending Fatigue Strength of Dowel Joints |
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作 者 | 周群; 李銘鐘; | 書刊名 | 臺灣林業科學 |
卷期 | 15:4 2000.12[民89.12] |
頁次 | 頁465-472 |
分類號 | 474.1 |
關鍵詞 | 木釘接合; 方榫接合; 疲勞強度; 循環速度; Dowel joint; Square-end mortise and tenon joint; Fatigue strength; Cycle speed; |
語文 | 中文(Chinese) |
中文摘要 | 木材之接合在家俱結構強度上佔重要地位,以往大都以靜態強度檢測,循環荷重則較少文獻;本研究探討構件樹種、膠合劑、荷重基準及循環速度,對木釘接合在循環荷重下的抗彎性質之影響,並比較與方榫接合之差異。結果顯示樹種對抗彎性質影響最小;UF接合試片具較PVAc者為強的抗彎強度;旋轉角度隨荷重基準增加而加大,剛性及殘留強度則反之;循環速度增為60 cycles/min時,對PVAc木釘接合影響較UF者為大;方榫接合之各項強度較木釘接合大。 |
英文摘要 | Wood joints play an important role in farniture structural design. Most previous studies, however, concentrated on the static loading procedure, and only a few documents focused on cyclic loading. The effects of component species, adhesive type, load level, and cycle speed on the cyclic bending properties of wood dowel joints were investigated in this study. Properties of mortise and tenon joints were also included for comparison. The results showed that the component species had an insignificant effect. Jointsglued with urea formaldehyde (UF) exhibited better cyclic bending strength than did PVAc joints. The rotation angle increased with increased load level, but the opposite trend was observed for joint stiffness and residual strength. A speed of 60 cycles/min had a greater effect on dowel joints glued with PVAc than those with UF. The square-end mortise and tenon joints had better strength properties than did dowel joints. |
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