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| Durability Evaluation of Coating for Key Components of Helicopter Fuselage Structure |
| Received:July 10, 2022 Revised:October 24, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.07.007 |
| KeyWord:helicopter fuselage structure coating durability corrosion |
| Author | Institution |
| LI Jian |
Army Aviation Research Institute, Beijing , China;Army Aviation Academy, Beijing , China |
| LIU Shuai-shuai |
Army Aviation Academy, Beijing , China |
| WU Yun-zhang |
Army Aviation Research Institute, Beijing , China |
| LI Zong-yuan |
Army Aviation Research Institute, Beijing , China |
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| Abstract: |
| The work aims to evaluate the durability of the coating for key components of the typical helicopter fuselage structure in the mild inland areas, and support the total calendar life extension of the fuselage. Visual inspection, coating gloss inspection and electrochemical AC impedance detection were carried out on the coating for key components of the fuselage structure during the overhaul cycle of the helicopter, and the detection data were comparatively analyzed to investigate the factors affecting the coating durability of the key components of the fuselage structure, and the durability of the coating was determined. The coating durability of the key components of the helicopter fuselage structure was better, the average light loss rate detected was 37.8% and the overall light loss rate was small. The average electrochemical impedance modulus value determined by the electrochemical impedance detection was 5.58×107 Ω.cm2, above the failure criterion, so the coating could effectively protect the key components of the fuselage structure from corrosive environment damage. During the overhaul cycle, the coating durability of the key components of the helicopter fuselage structure is good, and the durability of the coating in several areas is affected by the light and bumps, but the coating of the key components of the fuselage structure is less affected by temperature, humidity, salt spray concentration, etc. |
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