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| 服役条件下飞机结构腐蚀损伤概率模型研究 | |
| 引用本文： | 陈跃良,吕国志,段成美.服役条件下飞机结构腐蚀损伤概率模型研究[J].航空学报,2002,23(3):249-251. |
| 作者姓名： | 陈跃良 吕国志 段成美 |
| 作者单位： | 1. 西北工业大学,飞机系,陕西,西安,710072;海军航空工程学院青岛分院,飞机教研室,山东,青岛,266041 2. 西北工业大学,飞机系,陕西,西安,710072 3. 海军航空工程学院青岛分院,飞机教研室,山东,青岛,266041 |
| 摘 要： | 从现役飞机结构腐蚀损伤外场调研数据入手,对飞机结构主要材料 LY12 CZ的腐蚀特征量进行了统计分析。结果表明,给定时间下腐蚀损伤深度服从 Weibull分布;给定可靠度下,腐蚀深度 (d)随时间的变化符合 Sigmoid曲线规律;在较为恶劣环境下某型机内部件防腐涂层的有效期约为 2.5年。 |
| 关 键 词： | 铝合金 局部腐蚀 点蚀 最大腐蚀深度 统计分析 |
| 文章编号： | 1000-6893(2002)03-0249-03 |
| 修稿时间： | 2001年6月4日 |
A PROBABILITY MODEL FOR THE CORROSION DAMAGE OFAIRCRAFT STRUCTURE IN SERVICE ENVIRONMENT |
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| CHEN Yue Liang\\{,\},LU Guo zhi\,DUAN Cheng mei\.A PROBABILITY MODEL FOR THE CORROSION DAMAGE OFAIRCRAFT STRUCTURE IN SERVICE ENVIRONMENT[J].Acta Aeronautica et Astronautica Sinica,2002,23(3):249-251. | |
| Authors: | CHEN Yue Liang\\{ \} LU Guo zhi\ DUAN Cheng mei\ |
| Institution: | CHEN Yue Liang\+\{1,2\},LU Guo zhi\+1,DUAN Cheng mei\+2 |
| Abstract: | The corrosion depth of LY12CZ aluminum alloy was obtained by investigation in the service condition. A statistical study of corrosion characteristic quantity (CCQ) for these aluminum alloys was carried out. The results show that the corrosion depth is in conformity with Weibull distribution in given time. Corrosion depth (dm) was fitted to Sigmoid function curve of the service time which included exposure to the environment and flying time. The period of validity of the anticorrosion layer is about 2.5 years in severe service environments. |
| Keywords: | aluminum alloy localized corrosion pitting corrosion maximum corrosion depth statistical analysis |
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