Browsing 2018 International Solid Freeform Fabrication Symposium by Title
Now showing items 183-200 of 200
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Technology Integration into Existing Companies
(University of Texas at Austin, 2018)The implementation of additive manufacturing as an industrial manufacturing process poses extraordinary challenges to companies due to their far-reaching differences to conventional processes. In addition to the major ... -
Theory and Methodology for High-Performance Material-Extrusion Additive Manufacturing Under the Guidance of Force-Flow
(University of Texas at Austin, 2018)Anisotropy on strength between different layers and filaments in the material extrusion (MEX) process has a significant influence on mechanical performances of fabricated objects. A novel theory and methodology is proposed ... -
Tool Path Generation for Hybrid Additive Manufacturing
(University of Texas at Austin, 2018)This paper presents a new approach to tool path generation for a hybrid additive-subtractive manufacturing apparatus. The goal is the development of an integrated hybrid process, based on additive and subtractive manufacturing, ... -
Topology Optimisation of Additively Manufactured Lattice Beams for Three-Point Bending Test
(University of Texas at Austin, 2018)The ability of additive manufacturing to develop parts with complex shapes has increased the bandwidth of product design. This has facilitated the use of Topology Optimisation (TO) techniques to optimise the distribution ... -
Topology Optimized Heat Transfer Using the Example of an Electronic Housing
(University of Texas at Austin, 2018)Function integration is a key issue for an efficient and economic usage of Additive Manufacturing. An efficient heat transfer by topology optimized structures is a rarely considered approach which will be outlined with ... -
Topology-Aware Routing of Electric Wires in FDM-Printed Objects
(University of Texas at Austin, 2018)The direct integration of electric connections into AM-fabricated plastic parts at printing time has recently attracted increasing attention. To make efficient use of such techniques, appropriate design and routing ... -
Towards an Open-Source, Preprocessing Framework for Simulating Material Deposition for a Directed Energy Deposition Process
(University of Texas at Austin, 2018)This work focuses on the development of an open-source framework to simulate material deposition for arbitrary geometries with respect to desired process parameters during a directed energy deposition (DED) process. This ... -
Towards High Build Rates: Combining Different Layer Thickness within One Part in Selective Laser Melting
(University of Texas at Austin, 2018)Additive manufacturing of metallic parts using powder bed based fusion processes like selective laser melting is increasingly used in industrial applications. With typical layer thicknesses of 20 – 40 µm good surface ... -
Two-Dimensional Characterization of Window Contamination in Selective Laser Sintering
(University of Texas at Austin, 2018)Most Laser Sintering machines suffer from an issue where it is hypothesized that hot gases produced during the laser sintering process collect on the Zinc selenide (ZnSe) window separating the build chamber from the ... -
Understanding Adopting Selective Laser Melting of Metallic Materials
(University of Texas at Austin, 2018)Additive manufacturing, considered as the future of manufacturing or the new industrial revolution, presents many advantages over conventional manufacturing. These include manufacturing integrated parts, eliminating ... -
Understanding Hatch-Dependent Part Properties in SLS
(University of Texas at Austin, 2018)Selective laser sintering of polymers (SLS) is on the verge from pure prototyping to producing individualized complex parts for series application. As the parts are generated layer-wise and the influence of process-parameters ... -
Use of SWIR Imaging to Monitor Layer-to-Layer Part Quality During SLM of 304L Stainless Steel
(University of Texas at Austin, 2018)This paper evaluates using in-situ SWIR imaging to monitor part quality and identify potential defect locations introduced during Selective Laser Melting (SLM) of 304L stainless steel. The microstructure (porosity, grain ... -
Using Additive Manufacturing as a Pathway to Change the Qualification Paradigm
(University of Texas at Austin, 2018)Additive Manufacturing (AM) offers the opportunity to transform design, manufacturing, and qualification with its unique capabilities. AM is a disruptive technology, allowing the capability to simultaneously create part ... -
Using Autoencoded Voxel Patterns to Predict Part Mass, Required Support Material, and Build Time
(University of Texas at Austin, 2018)Additive Manufacturing (AM) allows designers to create intricate geometries that were once too complex or expensive to achieve through traditional manufacturing processes. Currently, designing parts using features specific ... -
Using Post-Tensioning in Large Scale Additive Parts for Load Bearing Structures
(University of Texas at Austin, 2018)One of the perennial problems with additive manufacturing (AM) is the lack of inter-laminar bond strength between the layers, also known as z-strength. This can make the use of AM fabricated parts in load bearing ... -
Viscosity Control of Pseudoplastic Polymer Mixtures for Applications in Additive-Manufacturing
(University of Texas at Austin, 2018)Various additive manufacturing (AM) processes exploit the rheological properties of non-Newtonian (e.g. pseudoplastic) polymers for stability and feature realization. For embedded 3D-printing (e3DP) and direct ink writing ... -
Volume Effects on the Fatigue Behavior of Additively Manufactured Ti-6Al-4V Parts
(University of Texas at Austin, 2018)Recent interest to implement additive manufactured parts into structural applications has created a critical need to better understand the fatigue behavior of these parts. Alloys such as Ti-6Al-4V are popular in the ... -
Z-Pinning Approach for Reducing Mechanical Anisotropy of 3D Printed Parts
(University of Texas at Austin, 2018)The mechanical strength of extrusion-based printed parts is often greatly reduced (25-50%) in the build direction (z-direction) compared to the in-plane strength due to poor bonding between successively deposited layers. ...
