Browsing 1996 International Solid Freeform Fabrication Symposium by Issue Date
Now showing items 21-40 of 71
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A Time, Cost and Accuracy Comparison of Soft Tooling for Investment Casting Produced Using Stereolithography Techniques
(1996)Investment casting is increasingly widely used in the production ofmetal prototypes in conjunction with rapid prototyping (RP) technologies. Some types ofRP models can be used directly as sacrificial patterns in the ... -
Microstructures and Strengths of Metals and Ceramics made by Photopolymerbased Rapid Prototyping
(1996)Metal and ceramic flexure specimens were fabricated using a photopolymer-based rapid prototyping technique. Photosensitive resins (inks) were produced by dispersing 50 - 55 vol% metal or ceramic powders in a photopolymer ... -
Modelling Simple Feature Creation in Selective Laser Sintering
(1996)A two dimensional finite difference thermal sintering model has been created to describe the Selective Laser Sintering process(SLS). It includes thermal property variation with position and temperature, and especially ... -
Filament Feed Materials for Fused Deposition Processing of Ceramics and Metals
(1996)Fused Deposition of Ceramics (FDC) and Metals (FDMet) are SFF techniques, based on commercial FDMTM technology, for fabrication of ceramic and metal components. The FD processes use feed material in the form of filaments ... -
Selective Laser Sintering Part Strength as a Function of Andrew Number, Scan Rate and Spot Size
(1996)Selective Laser Sintering has been modeled analytically and numerically, and studied experimentally. Further investigation is necessary to couple the results of modeling with experimental data. At Clemson University, ... -
Rapid Prototyping Process Using Metal Directly
(1996)Rapid Prototyping emerged in the USA in the late 80's and it made the whole industry rethink their way of making prototypes. Several new different process have emerged since then and these vary in materials, times, prices, ... -
Rapid Laser Forming of Titanium Near Shape Articles: LaserCast
(1996)An ongoing collaborative program sponsored by the DoD Advanced Research Projects Agency (DARPA) and the Office ofNaval Research (ONR) continues to show promising results in the development of a new laser based manufacturing ... -
Extraction of Fault Patterns on SLS Part Surfaces Using the Karhunen-Loeve Transform
(1996)To gain a thorough understanding of the fault mechanisms in SLS machines, we decompose SLS profile signals into independent features using a novel tool called Karhunen-Loeve (KL) transform. These individual features can ... -
Fast Production of Technical Prototypes Using Direct Laser Sintering of Metals and Foundry Sand
(1996)Currently most RP-Parts are used for visualisation, assembly checks and some functional testing. The next stage between these functional prototypes and the pre-series is technical prototypes, which are used for final ... -
Parametric Representation of Part Contours in SLS Process
(1996)Current layer-based SFF technologies process faceted geometric input data to produce polygonal contours of the part's boundary in each layer. However, for improved part quality, other more accurate representations of ... -
Shape Deposition Manufacturing of Wearable Computers
(1996)Shape Deposition Manufacturing (SDM) is a solid freefrom fabrication methodology which can fabricate heterogeneous structures, i.e., multi-material structures with embedded components. One application is to build-up ... -
"Curved-Layer" Laminated Object Manufacturing
(1996)A process where a freeform solid object is built by bonding cut layers of material together is called a Laminated Object Manufacturing process. Until today, all ofthe LOM processes utilized straight forward planar ... -
Gaining Competitive Advantage By Using Rapid Prototyping in Aircraft Modification
(1996)Raytheon-Waco (formerly Chrysler Technologies Airborne Systems) is an aircraft modification facility in Waco, TX, specializing in military, executive, and head-of-state aircraft modifications. Raytheon-Waco has over 25 ... -
The Influence of Natural Convection and Radiation Heat Transfer on Sintering of Polycarbonate Powders
(1996)The influence ofsurface radiation and natural convection on sintering of polycarbonate powders processed under non-isothermal conditions is investigated. These modes of heat transfer affect local powder temperatures and ... -
Using Fabricators to Reduce Space Transportation Costs
(1996)Ever since the Apollo landings, one ofthe primary barriers to more ambitious space projects has been the exorbitant cost oflifting equipment and construction components off ofthe Earth. Fabricators offer an intriguing ... -
Laser Deposition of Metals for Shape Deposition Manufacturing
(1996)A laser/powder deposition process has been added to the Shape Deposition Manufacturing system at Stanford University. This process is more robust than previous SDM metal deposition processes, consistently producing fully ... -
Part Quality Prediction Tools for Fused Deposition Processing
(1996)Fused Deposition process fabricates requested part geometries by sequentially depositing discrete curvilinear beads ofmaterial next to and on top of each other. The part integrity depends strongly on the bonding quality ... -
IVECS, Interactively Correcting .STL Files in a Virtual Environment
(1996)Free Form Fabrication (FFF) machines transform objects merely existing as Os or 1s in a computer into a tangible object. FFF machines shift the paradigm of standard 2 Dimensional printers/paper printouts to 3 Dimensional ...
