Browsing 2018 International Solid Freeform Fabrication Symposium by Title
Now showing items 5-24 of 200
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Acoustic Emission Technique for Online Detection of Fusion Defects for Single Tracks During Metal Laser Powder Bed Fusion
(University of Texas at Austin, 2018)One of the main drawbacks of laser based powder bed fusion, is lack of fusion between tracks due to non-optimal input process parameters, scanning and building strategies and/or inhomogeneity in the delivered powder ... -
Additive Manufacturing of Alumina Components by Extrusion of In-Situ UV-Cured Pastes
(University of Texas at Austin, 2018)Additive manufacturing of ceramic materials is an attractive technique for rapid prototyping of components at small scales and low cost. We have investigated the printing of alumina pastes loaded at 70-81.5 wt% solids ... -
Additive Manufacturing of Energetic Materials
(University of Texas at Austin, 2018)Over the last decade, additive manufacturing gained a lot of interest within the defense industry. However, printing energetic materials such as explosives or solid propellants remains a challenge. A research work with ... -
Additive Manufacturing of Liners for Shaped Charges
(University of Texas at Austin, 2018)A Shaped Charge (SC) is an explosive device used to focus a detonation in a desired direction, and has applications in demolition and oil extraction. The focusing relies on a void in the explosive mass, shaped by a metal ... -
Additive Manufacturing of Metal Bandpass Filters for Future Radar Receivers
(University of Texas at Austin, 2018)Selective laser melting (SLM) is a powder-bed fusion (PBF) process that bonds successive layers of powder with a laser to create components directly from computer-aided design (CAD) files. The additive nature of the SLM ... -
Additive Manufacturing of Metal Functionally Graded Materials: A Review
(University of Texas at Austin, 2018)Functionally graded materials (FGMs) have attracted a lot of research interest due to their gradual variation in material properties that result from the non-homogeneous composition or structure. Metal FGMs have been ... -
Additive Manufacturing with Modular Support Structures
(University of Texas at Austin, 2018)Additive manufacturing is praised to have low material waste compared to conventional subtractive manufacturing methods. This is not always the case when the computer aided design (CAD) model consists of large overhangs. ... -
An Aerospace Integrated Component Application Based on Selective Laser Melting: Design, Fabrication and Fe Simulation
(University of Texas at Austin, 2018)Developments in Additive Manufacturing (AM) technologies have enabled the integrated manufacturing of complex structures with multifunctional performances. Selective Laser Melting (SLM), as one of them, becomes the ... -
Aligning Material Extrusion Direction with Mechanical Stress via 5-Axis Tool Paths
(University of Texas at Austin, 2018)Mechanical properties of parts fabricated via the Material Extrusion (ME) process can be improved by optimising process settings, however, their properties are strongly influenced by build orientation due to the ... -
Ambient-Temperature Indentation Creep of an Additively Manufactured Ti-6Al-4V Alloy
(University of Texas at Austin, 2018)Instrumented indentation testing technique is a robust, convenient, and non-destructive characterization method to study time-dependent plastic deformation in metals and alloys at ambient and elevated temperatures. In ... -
Analysis of Build Direction in Deposition-Based Additive Manufacturing of Overhang Structures
(University of Texas at Austin, 2018)Additive manufacturing (AM) has gained repute as a direct method of fabrication of complex parts. However, the requirement for each layer to be structurally supported can make parts with overhangs hard to produce without ... -
Artificial Intelligence-Enhanced Mutli-Material Form Measurement for Additive Materials
(University of Texas at Austin, 2018)The range of materials used in additive manufacturing (AM) is ever growing nowadays. This puts pressure on post-process optical non-contact form measurement systems as different system architectures work most effectively ... -
Binder Jetting Additive Manufacturing of Water-Atomized Iron
(University of Texas at Austin, 2018)Binder jetting additive manufacturing (BJAM) was deployed to processing of low-cost, water-atomized pure iron powder. Surface morphology and particle size distribution of the powder were fully characterized using scanning ... -
Binder Jetting of High Temperature and Thermally Conductive (Aluminum Nitride) Ceramic
(University of Texas at Austin, 2018)This work reports on the novel fabrication of aluminum nitride (AlN) complex components using binder jetting, on the use of sintering and hot isostatic pressing (HIPing) to increase their density, and on the characterization ... -
A CAD-Based Workflow and Mechanical Characterization for Additive Manufacturing of Tailored Lattice Structures
(University of Texas at Austin, 2018)Lattice structures are highly recommended for lightweight applications and cost reduction in additive manufacturing (AM). Currently, parts with lattice structures are still mainly used for illustrative purposes and rarely ... -
Characterization and Analysis of Geometric Features for the Wire-Arc Additive Process
(University of Texas at Austin, 2018)The wire-arc additive manufacturing (AM) process expands the possibilities of effectively producing large-scale, complex metal objects through high deposition rates at low costs. However, this process is prone to ... -
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 ...
