Which fastening method is NOT typically associated with aerospace assembly?

In aerospace assembly, various fastening methods are employed to ensure the integrity and safety of components. Welding is not typically associated with aerospace assembly because it involves melting the base materials to form a bond, which can introduce structural weaknesses, heat-affected zones, and affect the mechanical properties of the metals involved. Aerospace assemblies usually prioritize removable fasteners or methods that allow for maintenance and inspection, such as bolts, cotter pins, and lockwires.

Tightening bolts is a common method used to secure components in place, providing a strong connection that can be adjusted or maintained over time. Using cotter pins serves a critical role in securing fasteners, especially in rotating assemblies, preventing them from loosening due to vibration. Similarly, installing lockwires is a method used to ensure that fasteners do not back out under operational conditions, particularly in applications where shock and vibration are significant concerns.

Overall, while welding is a valuable joining technique in many industries, it is less favored in aerospace for structural components due to the potential impact on material integrity and the need for disassembly during maintenance.