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頁籤選單縮合
題名 | Effect of Stress Ratios on Closure Development in 5083-O Aluminum Alloy Under Constant Amplitude Loading=5083-O鋁合金定幅負載下之裂縫閉合效應 |
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作者 | 張力; 宋佩瑄; 許伯秋; 黃馨; 周漢興; | 書刊名 | 中正嶺學報 |
卷期 | 27:1 1998.09[民87.09] |
頁次 | 頁1-7 |
分類號 | 440.39 |
關鍵詞 | 應力比; 裂縫閉合; 定幅負載; 有效應力強度幅比; Stress ratio; Crack closure; Constant amplitude loading; Effective stress intensity range ratio; |
語文 | 英文(English) |
中文摘要 | 裂縫閉合行為在疲勞裂縫成長中佔有非常重要的角色。本文旨在探討5083-O鋁合金在定 幅負載下,不同應力比R之裂縫閉合行為。實驗結果顯示,有效應力強度幅比U,隨R之增加而增 加,其關係式為U= 0.47 + 0.59R – 0.07R□。另外,則建立考慮裂縫閉合效應之裂縫成長速率方程式。 |
英文摘要 | Crack closure behavior plays a dominant role in the development of fatigue crack growth. Closure performance at stress ratios, R, was explored in 5083-O aluminum alloy under constant amplitude loading. An increase in R-ratio resulted in a higher closure level, and the closure model read: U= 0.47 + 0.59R – 0.07R□ for the R in the range of 0.05-0.45. Application of this model was made toward the representation of crack growth behavior. |
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