| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Finite Element Analysis and Failure Mechanisms of Refill Friction Stir Spot Welding |
| Author(s) |
Enkhsaikhan Boldsaikhan, Shintaro Fukada, Mitsuo Fujimoto, Kenichi Kamimuki |
| On-Site Speaker (Planned) |
Enkhsaikhan Boldsaikhan |
| Abstract Scope |
Refill Friction Stir Spot Welding (RFSSW) is an emerging solid-state spot-welding methodology for joining workpieces via thermo-mechanical processing without consuming any filler or foreign materials. The conventional pure/poke friction stir spot welding leaves behind a keyhole or exit hole. Unlike the conventional friction stir spot welding, RFSSW produces a spot joint with a near-flush surface finish that is free from a keyhole. This study investigates the stress distributions of refill friction stir spot joints under static remote loading using Finite Element Analysis (FEA). The finite element simulations mimic mechanical testing of single-spot-weld coupons made of aerospace aluminum alloys. The simulation results reveal insights into high-stress weld regions that contribute to the formation of certain mechanical failures that are demonstrated by refill friction stir spot joints. Understanding failure mechanisms of refill friction stir spot joints is crucial for successful applications of RFSSW in the aerospace industry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Aluminum, Characterization |