What is the purpose of heat lamps in composite repair?

Heat lamps are used in composite repair primarily to assist in adhesive flow and reduce set time. When heat is applied, it raises the temperature of the adhesive, which enhances its viscosity, allowing it to flow better into the surfaces being bonded. This improved flow is crucial for achieving a successful bond by ensuring that the adhesive thoroughly penetrates any gaps or irregularities in the surface of the composite materials being repaired.

Moreover, reducing the set time of the adhesive is important in repair processes, especially in aviation applications where quick turnaround times may be necessary. By facilitating the curing process through the application of heat, heat lamps help expedite repairs while ensuring a strong and effective bond between composite materials.

The other options suggest functions that do not accurately reflect how heat lamps are utilized in composite repair. Melting materials or curing composites instantly are not practical applications, and cooling down components is contrary to the purpose of using heat lamps. The emphasis is on enhancing adhesive performance rather than altering the intrinsic properties of the composite materials themselves.