The demand for lightweight design and better fuel-efficiency in the aerospace industry has reflected a significant increase in usage of more lightweight materials such as CFC (Carbon Fiber Composite), titanium and aluminum alloys.
Combinations of these dissimilar materials are often dictated by structural requirements that need to be fulfilled in the design. In an aircraft, these disparate materials are usually mechanically joined using fasteners or structural adhesives. However, when CFC and aluminum are connected, galvanic corrosion may be induced in the presence of moisture, introducing an additional degradation mechanism.
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