Which type of repair is typically performed on composite aircraft structures?

The choice of bonding and patching repairs is the most relevant for composite aircraft structures because these materials require specialized techniques that differ significantly from traditional metal repairs. Composite materials are often made from layers of fiber reinforced with resin, and the integrity of these structures relies heavily on the adhesive bonds that hold the layers together.

Bonding is essential because it involves using adhesives to join composite materials without compromising their strength and durability. This method preserves the lightweight and resiliant properties of the composite, which are critical for performance and safety in aircraft applications.

Patching is employed when there is a need to reinforce a damaged area. It involves applying a new layer of composite material over a damaged section, ensuring seamless integration and restoring structural integrity. This technique allows for repairs that maintain the aerodynamic properties and strength characteristics of the original material.

In contrast, other types of repairs mentioned do not align with the unique needs of composite materials. Welding and riveting are traditional methods used primarily on metals and do not provide the necessary bond strength required for composite structures. Sanding and painting might be part of surface finishing processes but do not address structural repairs. Drilling and fastening could create points of weakness in composites and are more suited for specific joinery in metal applications. Thus, bonding and patch