Browsing 2018 International Solid Freeform Fabrication Symposium by Title
Now showing items 105-124 of 200
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Laser Heated Electron Beam Gun Optimization to Improve Additive Manufacturing
(University of Texas at Austin, 2018)Electron Beam Additive Manufacturing requires to improve electron gun characteristics to become a highly competitive manufacturing process. Our work targets the optimization of beam focusing to reduce the beam spot size, ... -
Laser Metal Additive Manufacturing on Graphite
(University of Texas at Austin, 2018)Metal powders are typically directly fused to a metal substrate of similar composition in metal powder-bed fusion additive manufacturing. This work presents a process for printing a metal alloy directly on graphite, ... -
Laser Sintering of PA12/PA4,6 Polymer Composites
(University of Texas at Austin, 2018)This work investigates the laser sintering (LS) processing of polyamide-12/polyamide-4,6 composites and the performance of resulting parts. The coalescence and consolidation of the PA12/PA4,6 powder mixture are characterized. ... -
Lattice Design Optimization: Crowdsourcing Ideas in the Classroom
(University of Texas at Austin, 2018)Crowdsourcing is a powerful method of generating ideas, particularly when there are many possible solutions to a particular problem with no obvious process towards arriving at the optimum one. In this paper, results of ... -
Layer-Wise Profile Monitoring of Laser-Based Additive Manufacturing
(University of Texas at Austin, 2018)Additive manufacturing (AM) is a novel fabrication technique capable of producing highly complex parts. Nevertheless, a major challenge is improving the quality of fabricated parts. While there are a number of ways of ... -
Local Thermal Conductivity Mapping of Selective Laser Melted 316L Stainless Steel
(University of Texas at Austin, 2018)The variation in thermal conductivity of 316L stainless steel samples produced with selective laser melting with a varying process parameters is investigated in the bulk and in the microscale. A critical scan rate was ... -
Low Cost Numerical Modeling of Material Jetting-Based Additive Manufacturing
(University of Texas at Austin, 2018)Material jetting-based additive manufacturing is a promising manufacturing approach with increasing interest in mesoscale applications such as microfluidics, membranes, and microelectronics. At these size scales, significant ... -
Low Cost, High Speed Stereovision for Spatter Tracking in Laser Powder Bed Fusion
(University of Texas at Austin, 2018)Powder Bed Fusion Additive Manufacturing affords new design freedoms for metallic structures with complex geometries in high performance materials. The aerospace industry has identified the inherent benefits of AM not ... -
Machine Learning for Modeling of Printing Speed in Continuous Projection Stereolithography
(University of Texas at Austin, 2018)Continuous projection stereolithography technologies, also known as the Continuous Liquid Interface Production (CLIP), can achieve build speeds an order of magnitude faster than conventional layer-by-layer stereolithography ... -
Mandibular Repositioning Appliance Following Resection Crossing the Midline- A3D Printed Guide
(University of Texas at Austin, 2018)Additive Manufacturing (AM) is one of the latest manufacturing processes which has evolved dramatically over the past three decades. The benefits of AM have steadily stepped in to almost all modern industries. The medical ... -
Material Characterization for Lightweight Thin Wall Structures Using Laser Powder Bed Fusion Additive Manufacturing
(2018)In this study the geometry-process-material characteristics of the Ti6Al4V thin wall features fabricated by the EOS M270 laser melting powder bed fusion (LM-PBF) additive manufacturing (AM) was investigated. Samples with ... -
Material Properties of Ceramic Slurries for Applications in Additive Manufacturing Using Stereolithography
(University of Texas at Austin, 2018)Stereolithography (SL) is a process that uses photosensitive polymer solutions to create 3D parts in a layer by layer approach. Sandia National Labs is interested in using SL for the printing of ceramic loaded resins, ... -
Material Property Changes in Custom-Designed Digital Composite Structures Due to Voxel Size
(University of Texas at Austin, 2018)Advances in additive manufacturing enable fabrication of complex structures using functionally graded materials (FGMs) at a voxel level. Prior to developing voxel-based FGM designs using compatible dithering approaches, ... -
Mechanical Behavior of Additively Manufactured 17-4 PH Stainless Steel Schoen Gyroid Lattice Structure
(University of Texas at Austin, 2018)In this study, the mechanical properties of additively manufactured 17-4 PH stainless steel Schoen Gyroid lattice structures were investigated under monotonic tensile loading. Based on the results obtained from the ... -
The Mechanical Behavior of AISI H13 Hot-Work Tool Steel Processed by Selective Laser Melting under Tensile Stress
(University of Texas at Austin, 2018)AISI H13 tool steel is commonly used in hot-working applications include die casting dies, inserts, forging dies, extrusion dies, etc. Molds fabricated by selective laser melting (SLM) with conforming cooling channels ... -
Mechanical Challenges of 3D Printing Ceramics Using Digital Light Processing
(University of Texas at Austin, 2018)Digital light processing (DLP) 3D printing can be used for manufacturing complex structures using a variety of materials, which would be nearly impossible using traditional manufacturing methods. Recent work at Sandia ... -
Mechanical Properties Evaluation of a Ti-6Al-4V Thin-Wall Structure Produced by a Hybrid Manufacturing Process
(University of Texas at Austin, 2018)The hybrid manufacturing (HM) process combines the precision of computer numerical control (CNC) and the freeform capability of additive manufacturing to expand the versatility of advanced manufacturing. The intent of ... -
Mechanical Properties of Additively Manufactured Polymer Samples using a Piezo Controlled Injection Molding Unit and Fused Filament Fabrication compared with a Conventional Injection Molding Process
(University of Texas at Austin, 2018)In polymer additive manufacturing (AM), many processes have been developed and optimized in order to achieve decent mechanical properties in recent years. Nonetheless, it is hardly possible to reach the reference properties ... -
Mechanical Properties of Zr-Based Bulk Metallic Glass Parts Fabricated by Laser-Foil-Printing Additive Manufacturing
(University of Texas at Austin, 2018)The application of bulk metallic glasses (BMGs) has been traditionally limited to parts with small dimensions and simple geometries, due to the requirement of fast cooling during the conventional process of casting. This ... -
Mechanical Property Correlation and Laser Parameter Development for the Selective Laser Sintering of Carbon Fiber Reinforced Polyetheretherketone
(University of Texas at Austin, 2018)
