Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Solid-State Additive Manufacturing"”.
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Exploration of Small-Scale Solid-State Additive Manufacturing for the Repair of Metal Alloys
… with or the geometry being too intricate to fix. Additive manufacturing, commonly known as 3D printing, allows precise placement of material to build a part and has allowed the repair of complex parts. However, some materials are severely weakened using traditional additive manufacturing …
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Mechanical design for advancing small-scale solid state additive manufacturing to enable deposition of commercial metal alloys
Additive Friction Stir Deposition (AFSD) is an advanced manufacturing process that creates or repairs parts without melting the material. This research focuses on developing a small-scale version of AFSD, including new machine designs and tools for handling miniaturized materials. The study …
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Mechanical and Physical Properties in Additive Friction Stir Deposited Aluminum
… is to aid the development of large-scale additive manufacturing of jointless underbody hulls for the Army Ground Vehicle Systems by 1) generating an improved mechanical and metallurgical database and 2) understanding the Additive Friction Stir Deposition (AFSD) process. AFSD is a …
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Dynamic and Post-Dynamic Microstructure Evolution in Additive Friction Stir Deposition
Metal additive manufacturing stands poised to disrupt multiple industries with high material use efficiency and complex part production capabilities, however many technologies deposit material with sub-optimal properties, limiting their use. This decrease in performance largely stems from porosity …
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The Applicability of Additive Friction Stir Deposition for Bridge Repair
… was to investigate the potential application of additive friction stir deposition (AFSD) to repair corroded steel bridge members. AFSD is an emerging solid-state additive manufacturing (AM) technology with many advantageous qualities such as low porosity, low residual stresses, flexibility in …
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Additive Friction Stir Deposition of Aerospace Al-Zn-Mg-Cu-Zr Alloys: Leveraging Processing and Metallurgical Science for Structural Repair
Additive Friction Stir Deposition is an emerging solid-state additive manufacturing process that leverages severe plastic deformation to deposit fully dense metallic parts. This is of particular interest for high-strength aluminum alloys in which the addition of copper to the alloy chemistry makes …
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Advancing additive friction stir deposition as a repair technology through smooth particle hydrodynamic simulations.
Additive Friction Stir Deposition (AFSD) is a solid-state additive manufacturing (AM) process capable of generating near net shape components though layer by layer depositions. AFSD leverages frictional and plastic heat generation to plasticize material inside of a hollow, rotating tool. In …
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Establishing the process-structure-property-performance relationship and viable repair pathways for expeditionary airfield surfacing systems.
… system to establish fundamental links between manufacturing processes and mechanical performance under full-scale trafficking experiments. Local numerical simulations and analytical techniques were integrated into the root-cause analysis to illuminate causes of failure and potential pathways …
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Heat Generation and Transfer in Additive Friction Stir Deposition
Additive friction stir deposition (AFSD) is an emerging solid-state additive manufacturing process that leverages the friction stir principle to deposit porosity-free material. The unique flow of material that allows for the transformation of bar stock into a near-net shape part is driven by the …