Browsing 2018 International Solid Freeform Fabrication Symposium by Title
Now showing items 163-182 of 200
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Quantifying the Effect of Embedded Component Orientation on Flexural Properties in Additively Manufactured Structures
(University of Texas at Austin, 2018)In-situ embedding with Additive Manufacturing (AM) enables a user to insert functional components in a part by pausing the print, inserting the component into a specially designed cavity, and then resuming the print. ... -
Quantifying Uncertainty in Laser Powder Bed Fusion Additive Manufacturing Models and Simulations
(University of Texas at Austin, 2018)Various sources of uncertainty that can potentially cause variability in the product quality exist at different stages of the laser powder bed fusion (L-PBF) process. To implement computational models and simulations for ... -
Realtime Control-Oriented Modeling and Disturbance Parameterization for Smart and Reliable Powder Bed Fusion Additive Manufacturing
(University of Texas at Austin, 2018)The vision of sustainable mass customization calls for additive manufacturing (AM) processes that are resilient to process variations and interruptions. This work targets to pioneer a system-theoretical approach towards ... -
Recyclability of 304L Stainless Steel in the Selective Laser Melting Process
(University of Texas at Austin, 2018)During part fabrication by selective laser melting (SLM), a powder-bed fusion process in Additive Manufacturing (AM), a large amount of energy is input from the laser into the melt pool, causing generation of spatter and ... -
The Recycling of E-Waste ABS Plastics by Melt Extrusion and 3D Printing Using Solar Powered Devices as a Transformative Tool for Humanitarian Aid
(University of Texas at Austin, 2018)This study demonstrates the EcoPrinting principal, which makes use of renewable energy to realise a low carbon footprint means of recycling waste plastics into feedstock for Fused Filament Fabrication (FFF) 3D printing. ... -
Reinforcement Learning for Generating Toolpaths in Additive Manufacturing
(University of Texas at Austin, 2018)Generating toolpaths plays a key role in additive manufacturing processes. In the case of 3-Dimensional (3D) printing, these toolpaths are the paths the printhead will follow to fabricate a part in a layer-by-layer fashion. ... -
Research on Relationship between Depth of Fusion and Process Parameters in Low-Temperature Laser Sintering Process
(University of Texas at Austin, 2018)Model of low-temperature laser sintering, in which part warpage during process is prevented by anchoring of parts instead of high-temperature preheating, is discussed. Low-temperature laser sintering process allows powder ... -
A Review of the Additive Manufacturing of Fiber Reinforced Polymer Matrix Composites
(University of Texas at Austin, 2018)Additive manufacturing (AM), also referred to as 3D printing, has gained popularity due to the recent developments and market trends especially in the last decades. The main advantages of AM are its capability of producing ... -
Rheological, In Situ Printability and Cell Viability Analysis of Hydrogels for Muscle Tissue Regeneration
(University of Texas at Austin, 2018)Advancements in additive manufacturing have made it possible to fabricate biologically relevant architectures from a wide variety of materials. Hydrogels have garnered increased attention for the fabrication of muscle ... -
Screw Swirling Effects on Fiber Orientation Distribution in Large-Scale Polymer Composite Additive Manufacturing
(University of Texas at Austin, 2018)Large-Scale Additive Manufacturing (LSAM) polymer deposition employs a single screw extruder to melt and deliver the pelletized feedstock resulting in significantly higher flow rates as compared to conventional ... -
Selective Laser Melting of Al6061 Alloy: Processing, Microstructure, and Mechanical Properties
(University of Texas at Austin, 2018)Selective laser melting (SLM) is considered as one of the most promising additive manufacturing (AM) technologies. Aluminum alloy is of wide application potentiality due to their high specific strength and heat resistance. ... -
Simulation of the Thermal Behavior and Analysis of Solidification Process During Selective Laser Melting of Alumina
(University of Texas at Austin, 2018)Selective laser melting (SLM) has rapidly developed in the past decade. High precision-complex ceramics parts can be directly fabricated using this technology. To study the thermal behavior of molten pools in the selective ... -
Size and Topology Effects on Fracture Behavior of Cellular Structures
(University of Texas at Austin, 2018)Cellular structures can deform by either the bending, stretching or both of the cell walls or cell struts. In this study, the fracture characteristics of multiple typical cellular structures that represent both the ... -
Slurry-Based Laser Sintering of Alumina Ceramics
(University of Texas at Austin, 2018)In this work, a slurry-based laser sintering process is investigated. Laser sintering allows for a broad palette of materials to be used. Since the binder content is only about 16 vol% with respect to the ceramic powder ... -
Small-Scale Characterization of Additively Manufactured Aluminum Alloys Through Depth-Sensing Identification
(University of Texas at Austin, 2018)Selective laser melting (SLM) can be considered as a suitable additive manufacturing method for printing complex-in-shape aluminum components. However, to adopt the SLM for mass production of aluminum components for ... -
Solidification Simulation of Direct Energy Deposition Process by Multi-Phase Field Method Coupled with Thermal Analysis
(University of Texas at Austin, 2018)The multi-phase field method coupled with the thermodynamics database of calculation of phase diagrams has been successfully applied to simulation of solidification microstructure evolutions in engineering casting processes. ... -
Stereolithography-Based Manufacturing of Molds for Directionally Solidified Castings
(University of Texas at Austin, 2018)Directionally solidified components, such as single crystal turbine blades, are typically grown using shell molds prepared using a lost wax process that begins with injection-molded wax positives. These positives have ... -
Structural Health Monitoring of 3D Printed Structures
(University of Texas at Austin, 2018)3D printed parts are used in industry for both tooling application and smaller parts in assembled structures. Articles made through polymer based additive manufacturing are anisotropic and may have defects throughout the ... -
Structurally Intelligent 3D Layer Generation for Active-Z Printing
(University of Texas at Austin, 2018)Active-Z Printing offers the ability to deposit material along non-planar layers to control the mechanical behavior of parts produced by material extrusion additive manufacturing. These non-planar layers can be exploited ... -
A Sustainable Additive Approach for the Achievement of Tunable Porosity
(University of Texas at Austin, 2018)This study aims to design a green additive approach for the fabrication of controlled porosity on hydrogels. Although hydrogels have been of common use in tissue engineering, the generation of controllable porosity remains ...
