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http://dx.doi.org/10.14773/cst.2021.20.2.94

The Effect of Aircraft Parking Environment on Atmospheric Corrosion Severity  

Yun, Juhee (Aero Technology Research Institute, Republic of Korea Air Force)
Lee, Dooyoul (Department of Defense Science, Graduate School of Defense Management, Korea National Defense University)
Park, Sungryul (Aero Technology Research Institute, Republic of Korea Air Force)
Kim, Min-Saeng (Aero Technology Research Institute, Republic of Korea Air Force)
Choi, Dongsu (Republic of Korea Air Force Academy, Republic of Korea Air Force)
Publication Information
Corrosion Science and Technology / v.20, no.2, 2021 , pp. 94-104 More about this Journal
Abstract
Atmospheric corrosion severity associated with aircraft parking environment was studied using metallic specimens, and temperature and humidity sensors installed at each aircraft operating base. Data were analyzed after a year of exposure. Silver was used to measure chloride deposition by integrating X-ray photoelectron spectroscopy depth profiles. Carbon steel was utilized to determine the corrosion rate by measuring the weight loss. The time of wetness was determined using temperature and humidity sensor data. Analysis of variance followed by Tukey's "honestly significant difference" test indicated that atmospheric environment inside the shelter varied significantly from that of unsheltered parking environment. The corrosion rate of unsheltered area also varies with the roof. Hierarchical clustering analysis of the measured data was used to classify air bases into groups with similar atmospheric corrosion. Bases where aircraft park at a shelter can be grouped together regardless of geographical location. Unsheltered bases located inland can also be grouped together with sheltered bases as long as the aircraft are parked under the roof. Environmental severity index was estimated using collected data and validated using the measured corrosion rate.
Keywords
Environmental severity index; Atmospheric corrosion; Outdoor exposure test;
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