| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Coatings and Surface Engineering for Environmental Protection
|
| Presentation Title |
New Accelerated Corrosion Test Methods for Atmospheric Corrosion on Aluminum Aircraft |
| Author(s) |
Ekaterina A. Badaeva, Nels Olson, James Kirchner, Maribel Locsin, Kyle Clayton, Jill Seebergh |
| On-Site Speaker (Planned) |
Ekaterina A. Badaeva |
| Abstract Scope |
We describe an experimentally determined test method that more perfectly mimics and accelerates the processes of corrosion found on in-service aircraft. It includes: test panel design and cyclic treatment for the analysis of pitting under circumstances where paint is dis-bonded; cyclic test chamber modification and operational verification; initiation and propagation via chemical identity and concentration selection; environmental condition selection; and finally the results of verification testing across several common corrosion protection systems for decorative areas of aircraft livery. Findings include the correlation of corrosion with freezing cycles; the importance of dry-out dynamics; the importance of chloride concentration; and the importance of temperature and relative humidity to achieve corrosion morphologies that are more consistent with the in-service experience. We also present methods for automated data collection, reduction, and analysis that expand upon the traditional measures of blistering and filiform length, while providing faster turnaround for tests via automation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |