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| Corrosion Causes Analysis and Repair Measurement Research of a Certain Aircraft Flap Cabin Lower Wainscot Skin |
| Received:June 14, 2017 Revised:November 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.11.010 |
| KeyWord:flap cabin structure corrosion service environment reinforcement repair |
| Author | Institution |
| CHEN Yong |
Technology Center of Chengdu Aircraft Industrial Group Co., Ltd, Chengdu , China |
| LU Bin-rong |
Technology Center of Chengdu Aircraft Industrial Group Co., Ltd, Chengdu , China |
| LI Ze-jin |
Technology Center of Chengdu Aircraft Industrial Group Co., Ltd, Chengdu , China |
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| Abstract: |
| Objective To research causes for corrosion damage of lower wainscot skin of a certain aircraft flap cabin, analyze corrosion hazards, set down repair scheme, and put forward advices and measures of future corrosion protection and control. Methods Firstly, the structure's corrosion state at the scene was checked carefully; then the structure corrosion causes were studied from several aspects such as structure design and material selection, service environment analysis, corrosion product analysis. Targeted reinforcement repair scheme for corrosion position was made. Results Interior condensate water generated in the flap cabin local at the high temperature wet-hot environment, with the invading of Cl ion pollution floating in the air, resulted in crystal flake corrosion of wainscot skin material LY12 aluminum alloy. Conclusion Corrosion causes of aged aircraft structure are complex and diversified. Accurate definition of corrosion causes is the key to develop corrosion protection and control measures. |
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