항공기 주기환경이 대기부식위험도에 미치는 영향
The Effect of Aircraft Parking Environment on Atmospheric Corrosion Severity
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초록
Atmospheric corrosion severity associated with aircraft parking environment was studied using metallicspecimens, and temperature and humidity sensors installed at each aircraft operating base. Data were ana lyzed after a year of exposure. Silver was used to measure chloride deposition by integrating X-ray pho toelectron spectroscopy depth profiles. Carbon steel was utilized to determine the corrosion rate by measuringthe weight loss. The time of wetness was determined using temperature and humidity sensor data. Analysis ofvariance followed by Tukey’s “honestly significant difference” test indicated that atmospheric environmentinside the shelter varied significantly from that of unsheltered parking environment. The corrosion rate ofunsheltered area also varies with the roof. Hierarchical clustering analysis of the measured data was used to clas sify air bases into groups with similar atmospheric corrosion. Bases where aircraft park at a shelter can begrouped together regardless of geographical location. Unsheltered bases located inland can also be groupedtogether with sheltered bases as long as the aircraft are parked under the roof. Environmental severity index wasestimated using collected data and validated using the measured corrosion rate.
Abstract
Atmospheric corrosion severity associated with aircraft parking environment was studied using metallicspecimens, and temperature and humidity sensors installed at each aircraft operating base. Data were ana lyzed after a year of exposure. Silver was used to measure chloride deposition by integrating X-ray pho toelectron spectroscopy depth profiles. Carbon steel was utilized to determine the corrosion rate by measuringthe weight loss. The time of wetness was determined using temperature and humidity sensor data. Analysis ofvariance followed by Tukey’s “honestly significant difference” test indicated that atmospheric environmentinside the shelter varied significantly from that of unsheltered parking environment. The corrosion rate ofunsheltered area also varies with the roof. Hierarchical clustering analysis of the measured data was used to clas sify air bases into groups with similar atmospheric corrosion. Bases where aircraft park at a shelter can begrouped together regardless of geographical location. Unsheltered bases located inland can also be groupedtogether with sheltered bases as long as the aircraft are parked under the roof. Environmental severity index wasestimated using collected data and validated using the measured corrosion rate.
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