Browsing 2018 International Solid Freeform Fabrication Symposium by Title
Now showing items 21-40 of 200
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Characterization of High-Deposition Polymer Extrusion in Hybrid Manufacturing
(University of Texas at Austin, 2018)Hybrid manufacturing processes that include additive and subtractive operations have unlocked many of the design limitations that were not previously available. Additive processes allow increased design flexibility, ... -
Characterization of Impact Toughness of 304L Stainless Steel Fabricated Through Laser Powder Bed Fusion Process
(University of Texas at Austin, 2018)In this research, the impact toughness of powder bed based additively manufactured 304L stainless steel was investigated. Charpy specimens were built in vertical, horizontal and inclined (45°) orientations to investigate ... -
Characterizing Interfacial Bonds in Hybrid Metal AM Structures
(University of Texas at Austin, 2018)The capabilities of various metal Additive Manufacturing (AM) processes, such as Powder Bed Fusion - Laser (PBF-L) are increasing such that it is becoming ever more common to use them in industrial applications. The ... -
A Comparative Investigation of Sintering Methods for Polymer 3D Printing Using Selective Separation Shaping (SSS)
(University of Texas at Austin, 2018)Selective Separating Shaping (SSS) is a novel additive manufacturing process which is capable of processing polymeric, metallic, ceramic and cementitious materials. In earlier experiments, the capabilities of SSS in ... -
A Comparison of Modeling Methods for Predicting the Elastic-Plastic Response of Additively Manufactured Honeycomb Structures
(University of Texas at Austin, 2018)Valid and accurate models describing the mechanical behavior of additively manufactured cellular materials are crucial to enabling their implementation in critical-to-function parts. Broadly speaking, the modeling ... -
A Comparison of Stress Corrosion Cracking Susceptibility in Additively-Manufactured and Wrought Materials for Aerospace and Biomedical Applications
(University of Texas at Austin, 2018)Additive manufacturing (AM) is becoming an increasingly popular method in both aerospace and biomedical industries. Titanium alloys are increasingly common in additive manufactured applications due to their excellent ... -
Continuous Property Gradation for Multi-Material 3D-Printed Objects
(University of Texas at Austin, 2018)Modern AM processes allow for printing multiple materials. The resulting objects can be stiff/dense in some areas and soft/porous in others, resulting in distinct physical properties. However, modeling material gradients ... -
Control System Framework for Using G-Code-Based 3D Printing Paths on a Multi-Degree of Freedom Robotic Arm
(University of Texas at Austin, 2018)This paper describes a control system framework using G-Code-based 3D printing paths on a serial link robot manipulator with multiple degrees of freedom. Usually, G-Code is created by a software application, commonly ... -
Convection Heat Transfer Coefficients for Laser Powder Bed Fusion
(University of Texas at Austin, 2018)This study investigates the effects of convection heat transfer during the laser-powder bed fusion (L-PBF) additive manufacturing process. For the L-PBF process, parts are fabricated under a purged, inert environment to ... -
Correlations of Interlayer Time with Distortion of Large Ti-6Al-4V Components in Laser Metal Deposition with Wire
(University of Texas at Austin, 2018)Laser metal deposition with wire (LMD-w) is one of the emerging additive manufacturing (AM) technologies for large-scale aerospace components due to high deposition rates and material efficiency. However, it often results ... -
Correlative Beam Path and Pore Defect Space Analysis for Modulated Powder Bed Laser Fusion Process
(University of Texas at Austin, 2018)There are ongoing challenges in achieving full density metal parts via Laser Powder Bed fusion (LPBF). Numerous of studies have shown that the part density depends on the process parameters, the powder characteristics ... -
Curing Behavior of Thermosets for the Use in a Combined Selective Laser Sintering Process of Polymers
(University of Texas at Austin, 2018)Selective laser sintering (SLS) of polymers is an additive manufacturing process, which enables the production of functional technical components. Unfortunately, the SLS process is restricted regarding the materials that ... -
Curvature-Based Segmentation of Powder Bed Point Clouds for In-Process Monitoring
(University of Texas at Austin, 2018)This paper presents a curvature-based analysis of point clouds collected in-process with fringe projection in a polymer powder bed fusion process. The three-dimensional point clouds were obtained from outside of the build ... -
Deposition Controlled Magnetic Alignment in Iron-PLA Composites
(University of Texas at Austin, 2018)By manipulating the print plane, infill direction, and geometry of Fused Filament Fabricated (FFF) iron-PLA composite parts, the alignment of their magnetic axes can be influenced. FFF printing allows control of deposition ... -
Design and Additive Manufacturing of a Patient Specific Polymer Thumb Splint Concept
(University of Texas at Austin, 2018)Traditionally, upper limb splints often fall short of being optimal with respect fit and patient expectations, resulting in a lack of use and no treatment of the underlying condition. In this study we address several ... -
Design and Robotic Fabrication of 3D Printed Moulds for Composites
(University of Texas at Austin, 2018)3D printing technologies have a direct impact on manufacturing the composite structures and in particularly fabrication of molds. Molds produced through additive manufacturing methods would greatly improve product features. ... -
Design Guidelines for a Software-Supported Adaptation of Additively Manufactured Components with Regard to a Robust Production
(University of Texas at Austin, 2018)The design of additively manufactured components requires a rethinking in the design process. This is inhibited by a lack of knowledge about additive manufacturing technologies. For this reason, a large number of design ... -
Design Rules for Additively Manufactured Wrist Splints Created Using Design of Experiment Methods
(University of Texas at Austin, 2018)Research has shown that wrist splints can be made using Additive Manufacturing (AM) with a similar or greater performance than splints created using traditional manufacturing methods. By using AM, many of the problems ... -
Development of a Customized CPAP Mask Using Reverse Engineering and Additive Manufacturing
(University of Texas at Austin, 2018)Continuous positive airway pressure (CPAP) therapy has been widely used to treat moderate and/or severe Obstructive Sleep Apnoea (OSA) syndrome since its invention. However, CPAP mask interface induced side effects, such ... -
Development of a Thermoplastic Biocomposite for 3D Printing
(University of Texas at Austin, 2018)Organosolv lignin, a natural cross-linked phenolic wood polymer is a by-product of the pulping process in the paper industry. It is a renewable organic natural product with potential application in many areas. It has ...
