北京航空航天大学学报 ›› 2002, Vol. 28 ›› Issue (1): 109-112.

• 论文 • 上一篇    下一篇

飞机结构腐蚀部位涂层加速试验环境谱研究

刘文珽, 李玉海, 陈群志, 贺小帆   

  1. 北京航空航天大学 飞行器设计与应用力学系
  • 收稿日期:2000-07-11 发布日期:2010-11-19
  • 作者简介:刘文(1940-),男,河北高阳人,教授,100083,北京.

Accelerated Corrosion Environmental Spectrums for Testing Surface Coatings of Critical Areas of Flight Aircraft Structures

LIU Wen, LI Yu, CHEN Qun, HE Xiao   

  1. Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics
  • Received:2000-07-11 Published:2010-11-19

摘要: 提出了适用于飞机结构腐蚀关键部位涂层的加速试验环境谱,该谱的基本构成以CASS谱为基础,1个周期包括温湿、紫外照射、热冲击、低温疲劳和盐雾5个环境块,代表地面停放1a.结合我国沿海、湿热地区实际情况给出了温湿试验、热冲击试验的具体条件,并建立了盐雾试验中性与酸性盐雾的比例、紫外试验时间及低温疲劳应力的确定方法.以某歼击机腐蚀关键部位作为实例具体阐述了加速环境谱的编制过程,并用与外场飞机关键部位腐蚀程度对比的方法验证了1个周期代表我国沿海、湿热地区停放1a的当量加速关系.

Abstract: An accelerated corrosion environmental spectrum was introduced to test the surface coatings of the critical areas of flight aircraft structures. The spectrum is composed of hot-humid environment、ultraviolet radiation、thermal impingement、low temperature fatigue and salt spray. One single cycle of the spectrum was supposed to be equal to one-year experience in ground environment. In combination with the actual environment of marine and hot-humid area in China, concrete conditions for hot-humid and thermal impingement tests were developed. The proportions of neutral and acidic salt sprays, the ultraviolet radiation time and the method of determining low temperature fatigue stress levels were established. The programming of the accelerated environmental spectrum was conducted by combining the corrosion critical areas of  flight aircraft. The equivalent relations that single cycle represents one year in marine and hot-humid areas were verified by comparing the corrosion degrees between the accelerated corrosion environmental spectrum and ground environmental spectrum.

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