Which method of repairing honeycomb structures involves applying a cloth overlay?

The method that involves applying a cloth overlay to repair honeycomb structures is the laminated glass fabric cloth overlay method. This approach utilizes layers of fabric that are adhered to the surface of the honeycomb structure using a resin, providing reinforcement and restoring structural integrity.

This method is particularly useful for addressing surface damage without compromising the overall structure of the honeycomb core. It allows for the repair to be lightweight, which is essential in aerospace applications where weight reduction is crucial. The overlay not only adds strength but also protects against environmental factors that could further degrade the honeycomb structure.

In contrast, other methods listed are not applicable for this type of repair. The welding method is typically used for thermoplastic or metal structures, while the potted compound repair involves using a compound to fill a void and bond components, which does not specifically include a cloth overlay. The structural replacement method requires removing the damaged section and replacing it entirely, rather than applying an external reinforcement as in the laminated glass fabric cloth overlay method.