Abstract
Since the introduction of refill friction stir spot welding (RFSSW) in the early 2000s, numerous evaluations of properties, performance, and prototypes have been documented. RFSSW is a solid-state spot joining technique that is being evaluated as a rivet replacement technology for aerospace structures and fuselage fabrication. A production evaluation of overlapping wing skin assembly was completed and experimentation on stringer-stiffened curvilinear panels is underway. Weld properties were evaluated for spots produced on bare sheet as well as for sections with sealant applied. Furthermore, evaluations of the performance of repaired spots using the RFSSW process are demonstrated. Characterization of the weld interface, heat-affected zone, and complete through-thickness consolidation via computed tomography is presented.
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Belnap, R., Blackhurst, P., Hovanski, Y., Curtis, A., Cobb, J., Misak, H. (2023). Production Evaluation of Refill Friction Stir Spot Welding. In: Hovanski, Y., Sato, Y., Upadhyay, P., Naumov, A.A., Kumar, N. (eds) Friction Stir Welding and Processing XII. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22661-8_13
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DOI: https://doi.org/10.1007/978-3-031-22661-8_13
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