| 导弹推进剂贮箱结构强度及剩余寿命实验研究 |
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| 引用本文： | 刘国庆%常新龙%张晓军.导弹推进剂贮箱结构强度及剩余寿命实验研究[J].宇航材料工艺,2007,37(2):70-72. |
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| 作者姓名： | 刘国庆%常新龙%张晓军 |
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| 作者单位： | 1. 西北工业大学航天学院,西安,710072
2. 第二炮兵工程学院,西安,710025 |
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| 摘 要： | 用三点弯曲多试样方法对导弹推进剂贮箱主要材料LD10铝合金及其焊件的断裂韧性和疲劳性能进行了实验研究,得到了材料母材、热影响区和焊缝的断裂韧性J_(IC)和疲劳裂纹扩展速率da/dN的规律。结合无损检测信息可以对导弹推进剂贮箱进行安全性评定和剩余寿命评估。
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| 关 键 词： | 三点弯曲 J积分 剩余寿命 断裂韧度 裂纹扩展速率 |
| 修稿时间： | 2006-07-03 |
Experimental Study of Structural Strength and Residual Life for Missile Propellent Tanks |
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| Liu Guoqing,Chang Xinlong,Zhang Xiaojun.Experimental Study of Structural Strength and Residual Life for Missile Propellent Tanks[J].Aerospace Materials & Technology,2007,37(2):70-72. |
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| Authors: | Liu Guoqing Chang Xinlong Zhang Xiaojun |
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| Abstract: | Experimental study on fracture toughness and fatigue performance of aluminum alloy LD10 and its welds is performed by using three point bend multi-specimens.The fracture toughness J_(IC)and fatigue crack propagation law da/dN for the matrix material,the heat affected zone and the welds are obtained.Safety evaluating and residual life estimating of missile propellent tanks can be carried out with these data coupling with non-destructive testing informa- tion. |
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| Keywords: | Three point bend J-Integral Residual life Fracture toughness Crack propagation rate |
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