About this Abstract |
| Meeting |
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
|
| Symposium
|
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
|
| Presentation Title |
Advancing Structural Repair of Through-Holes in Aerospace Aluminum Using Additive Friction Stir Deposition |
| Author(s) |
Mark Pandol, Luke Hagedorn, Hang Yu |
| On-Site Speaker (Planned) |
Mark Pandol |
| Abstract Scope |
Additive Friction Stir Deposition (AFSD) is a solid-state additive manufacturing process that is well suited for the repair of components fabricated from non‑weldable alloys. This work is focused on the fatigue performance of AFSD-repaired through-hole damage in AA7050, a non-weldable high strength aluminum alloy. Existing repair approaches restore component geometry but result in compromised fatigue performance. In contrast, the fatigue performance of AFSD-repaired material has shown substantial improvements over existing repair strategies, and with optimized processing, can even outperform pristine material. This performance enhancement is attributed to changes in the crack initiation and propagation mechanisms because of the high shear nature of the AFSD process and the resulting dynamic microstructure evolution. Recent advances in AFSD machinery further enable systematic exploration of process improvements and facilitate the transferability of the repair method across equipment. Additionally, multiple repair geometries were evaluated to highlight the robustness of the AFSD repair process. |
| Proceedings Inclusion? |
Undecided |