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Showing 1 to 18 of 18 for “"Additive friction stir deposition"”.
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Processing Mechanics of Additive Friction Stir Deposition
Additive friction stir deposition (AFSD) is a newly developed solid-state metal additive manufacturing (AM) technology that adds a material feeding mechanism to the friction stir principle (Yu et al.., 2018). As a newly developed process, the development of a sound understanding of the process …
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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 …
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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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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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Frequency Response Modeling of Additive Friction Stir Deposition Parts with Print Defects
… to detect flaws in prints produced through additive friction stir deposition that arise through environmental contamination. More specifically, the use case considered is the printing of AA7075 in an iron oxide rich environment, where iron oxide dust or powder could accidentally be stirred …
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Material Flow and Microstructure Evolution during Additive Friction Stir Deposition of Aluminum Alloys
… grain sizes are common during fusion-based metal additive manufacturing due to the inherent melting and solidification that occurs during printing. In recent years, a high-temperature, rapid plastic deformation technique called additive friction stir deposition (AFSD) has shown great promise in …
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The Corrosion Susceptibility of AA7050 Repaired for Aerospace Applications Via Additive Friction Stir Deposition
… this dissertation is to explore the viability of Additive Friction StirDeposition (AFSD) as a method for the repair of 7XXX-series aluminum alloy aerospace parts byexamining the corrosion response of materials processed with this technique. To date, the majorityof studies involving AFSD have …
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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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Investigation of the Processing History during Additive Friction Stir Deposition using In-process Monitoring Techniques
Additive friction stir deposition (AFSD) is an emerging solid-state metal additive manufacturing technology that uses deformation bonding to create near-net shape 3D components. As a developing technology, a deeper understanding of the processing science is necessary to establish the …
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Origins of Embrittlement of an Al-Zn-Mg-Cu Alloy Post Additive Friction Stir Deposition
Additive Friction Stir Deposition (AFSD) is a solid state, bulk, metal additive manufacturing technology that seeks to replace certain castings and forgings wherever it is economically feasible among other applications. Critical to its deployment is an in depth understanding of how the solid state …
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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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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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Microstructure Representation and Prediction via Convolutional Neural Network-Based Texture Representation and Synthesis, Towards Process Structure Linkage
Metal additive manufacturing (AM) provides a platform for microstructure optimization via process control, the ability to model the evolution of microstructures from changes in processing condition or even predict the microstructures from given processing condition would greatly reduce the time …
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Application of Novel Additive Manufacturing Techniques for Cost Reduction in Space Launch Vehicles
Additive Friction Stir Deposition (AFSD) is a new type of Additive Manufacturing (AM) capable of high-rate deposition of aerospace aluminum. AFSD overcomes some drawbacks of other AM processes while still benefiting from an expanded design space and alternative sourcing options. AFSD is promising …
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Smoothed Particle Hydrodynamic Modeling of Solid State Additively Manufactured Aluminum Alloys
Additive friction stir-deposition (AFS-D) is a nascent additive manufacturing process shown to have better mechanical properties of deposited material than conventional techniques. While significant experimental research has been conducted on AFS-D, relatively little computational research exists …
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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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Physics-informed Machine Learning for Digital Twins of Metal Additive Manufacturing
Metal additive manufacturing (AM) is an emerging technology for producing parts with virtually no constraint on the geometry. AM builds a part by depositing materials in a layer-by-layer fashion. Despite the benefits in several critical applications, quality issues are one of the primary concerns …
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Establishing the process-structure-property-performance relationship and viable repair pathways for expeditionary airfield surfacing systems.
… for EAF surfacing systems. This solid-state additive manufacturing (AM) and repair method can be implemented with minimal infrastructure once an EAF surfacing system has been damaged or rendered failed. Particular focus was placed on reducing time at elevated temperatures and increasing the …