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| Atmospheric Environment Demarcation of China Based on Corrosion of Aeronautic Metallic Materials |
| Received:March 21, 2020 Revised:April 15, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.05.001 |
| KeyWord:aluminum alloy alloy steel corrosion atmospheric environment demarcation standard humid air systematic clustering |
| Author | Institution |
| ZHANG Teng |
Air Force Engineering University, Xi′an , China |
| ZHANG Sheng |
Air Force Engineering University, Xi′an , China |
| HE Yu-ting |
Air Force Engineering University, Xi′an , China |
| MA Bin-lin |
Air Force Engineering University, Xi′an , China |
| ZHANG Tian-yu |
Air Force Engineering University, Xi′an , China |
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| Abstract: |
| Aiming at the corrosion problem of aircraft in service in China, the paper aims to release regional prediction and refined management of the aircraft structure calendar life. Meteorological environment data for 17 typical regions of China's atmospheric environment were collected. Climate and chemical environment spectra were compiled for each region. According to the principle of corrosion charge equivalence, the atmospheric environment in each region was converted to the standard humid air action time with the conversion coefficient of aluminum alloy and alloy steel. According to the differences in atmospheric corrosion, 17 typical regions were classified based on the systematic clustering method. The demarcation criteria of each subregion and then the number of atmospheric corrosion demarcations were determined. Additionally, the data of other regions available in the current literature and the distribution of climate, precipitation and air pollution in China were taken into account in the atmospheric environment corrosion demarcation of China. According to the corrosion characteristics of aluminum alloy and alloy steel, the atmospheric environment in China can be demarcated into five regions. The map of China's atmospheric environment corrosion demarcation was drawn, in which the environmental characteristics, geographical distribution and representative cities of each region were given. By applying the demarcation result of China's atmospheric environment regions, the severity of corrosion in different service environments of aircraft in China can be directly grasped, which lays a foundation for establishment of accelerated corrosion environment spectrum, assessment of aircraft structure calendar life, and formulation of targeted maintenance plan and flight plan. |
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