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Modeling Galvanic Corrosion Behavior Of Carbon Fiber Composite/AL 7050 Joints Under Extended Exposures


The DoD - Allied Nations Technical Corrosion Conference is a critical event that fosters an effective collaborative enviornment to understand the impact of corrosion on DoD equipment and infrastructure.

Dr. Siva Palani presented ‘Modeling galvanic corrosion behavior of Carbon fiber composite/Al 7050 joints under extended exposures’.

His work focuses on modeling the corrosion behavior of a typical structural design element, namely a Carbon fiber composite / Al 7050 bare and anodized configurations mechanically joined with titanium Hi-Lok fasteners exposed for 1 month under ASTM B117 constant 3.5 wt.% NaCl salt spray conditions. A thin film galvanic corrosion model was used to model these cases under a constant film thickness and a CFD (Computational Fluid Dynamics) tool was used to predict galvanic corrosion under a variable film thickness. The real corrosion damage on the aluminum after the exposure was analyzed by means of laser scan profilometry with subsequent pit volume calculation and compared with predictions. A PDF copy of the paper can be found below.

Allied Nations Paper.pdf