Browsing 2018 International Solid Freeform Fabrication Symposium by Title
Now showing items 154-173 of 200
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PEEK High Performance Fused Deposition Modeling Manufacturing with Laser In-Situ Heat Treatment
(University of Texas at Austin, 2018)Because of the thermal resistance, high mechanical properties, biocompatibility, PEEK have increasingly extended their application in medicals, aircraft, industrial fields and so on. In FDM, a low crystallinity can be ... -
Pick and Place Robotic Actuator for Big Area Additive Manufacturing
(University of Texas at Austin, 2018)Oak Ridge National Laboratory’s Manufacturing Demonstration Facility has created a system that works in tandem with an existing large-scale additive manufacturing (AM) system to ‘pick and place’ custom components into a ... -
Potentials and Challenges of Multi-Material Processing by Laser-Based Powder Bed Fusion
(University of Texas at Austin, 2018)Multi-material additive manufacturing offers a multitude of opportunities for increasing functional integration beyond the current state of the art. However, the real potential is only vaguely described and there are also ... -
Precast Concrete Models Fabricated with Big Area Additive Manufacturing
(University of Texas at Austin, 2018)The traditional process of making precast concrete molds requires significant manual labor. The molds are made using hardwood, cost tens of thousands of dollars, and take weeks to build. Once built, a mold will last 5-10 ... -
Precision Enhancement of 3D Printing via In Situ Metrology
(University of Texas at Austin, 2018)The field of additive manufacturing, especially 3D printing, has gained growing attention in the research and commercial sectors in recent years. Notwithstanding that the capabilities of 3D printing have moved on to enhanced ... -
Predictive Iterative Learning Control with Data-Driven Model for Optimal Laser Power in Selective Laser Sintering
(University of Texas at Austin, 2018)Building high quality parts is still a key challenge for Selective Laser Sintering machines today due to a lack of sufficient process control. In order to improve process control, we propose a Predictive Iterative Learning ... -
Printing Orientation and How Implicit It Is
(University of Texas at Austin, 2018)A study on how implicit the printing orientation is for people with no previous experience in additive manufacturing was conducted. The study was developed with middle and high school students divided into two groups, ... -
Processing of High Performance Fluoropolymers by Laser Sintering
(University of Texas at Austin, 2018)One of the main limitations of laser sintering (LS) is its narrow material portfolio. Fluoropolymers are a family of polymers with outstanding properties such as wide service temperatures (−260 °C - +260 °C), excellent ... -
Processing Short Fiber-Reinforced Polymers in the Fused Deposition Modeling Process
(University of Texas at Austin, 2018)By adding fibers to a polymer matrix, a reinforcement of the material can be achieved. Short fiber-reinforced polymers can easily be processed by the Fused Deposition Modeling (FDM) process without major modifications ... -
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. ...
