| Abstract Scope |
Cold spray additive manufacturing is a highly capable technology for repairing aerospace structures and components, including structural repairs. Boeing, in collaboration with its partners, has been actively investigating the use of cold spray for repairing aluminum structures. Typically, research begins by producing mechanical test results that demonstrate satisfactory performance for a specific repair. However, qualifying a repair becomes complex due to the practicalities involved in maintenance, repair, and overhaul operations. Qualification of a repair necessitates efforts beyond the initial validation stage.
The Lincoln pillars of airworthiness directive AWD 1015 serve as an example of the robustness required to demonstrate a successful repair including: stability, producibility, characterization of mechanical properties, predictability of performance, and supportability. In this presentation, we will discuss the challenges associated with the qualification process, with the in situ repair of an aircraft structure. Additionally, we will present an approach to minimize testing during the qualification process. |