Steady State Modeling of the Influence of Galvanic Coupling on the Structural Degradation of Airframe Components
Abstract
A thin, chloride-containing electrolyte film can be established on surfaces in many marine environments, due to splash/spray, rain, or salt-enabled deliquescence [1]. Defects in the corrosion protection system are common and inevitable due to the intense operating/maintenance conditions of ships and aircraft. Such defects are likely intensified at complex component joining/fastener locations. Furthermore, the geometry of faying surfaces and fastener holes inherently aid in the trapping/wicking of the electrolyte into tight crevices typical of these component joining locations. This geometry leads to a severe localized corrosion environment where a galvanic cell can be established, for example, between aluminum alloy components and stainless steel fasteners.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 05, 2014
- Source ID
- 10.1149/ma2014-02/19/957
Entities
People
- Chao Liu
- Robert G. Kelly