Browsing 2006 International Solid Freeform Fabrication Symposium by Title
Now showing items 47-66 of 68
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A Parametric Study of Part Distortions in FDM Using 3D FEA
(2006-09-14)We developed a finite element model to simulate the fused deposition modeling (FDM) process. The model considers the coupled thermal and mechanical analysis and incorporates the element activation function to mimic the ... -
Polyamide Nanocomposites for Selective Laser Sintering
(2006)Current polyamide 11 and 12 are lacking in fire retardancy and high strength/high heat resistance characteristics for a plethora of finished parts that are desired and required for performance driven applications. It is ... -
Practical Issues in the Application of Direct Metal Laser Sintering
(2006)Direct Metal Laser Sintering (DMLS) was introduced to meet the objective of producing metal parts directly from CAD data. CRDM has accumulated six years of experience in applying this technique, mostly to prototyping ... -
Precision Extrusion Deposition of Polycaprolactone/Hydroxyapatite Tissue Scaffolds
(2006)Freeform fabrication provides an effective process tool to manufacture advanced tissue scaffolds with specific designed properties. Our research focuses on using a novel Precision Extrusion Deposition (PED) process ... -
A Preliminary Study on Using Multi-Nozzle Polymer Deposition System to Fabricate Composite Alginate/Carbon Nanotube Tissue Scaffolds
(2006)Three-dimensional composite alginate/single wall carbon nanotube (SWCNT) scaffolds encapsulated with endothelial cells were fabricated by a multi-nozzle biopolymer freeform deposition system. This system enables the ... -
Principles of Laser Micro Sintering
(2006-09-14)Laser Micro Sintering was introduced to the international community of freeform fabrication engineers in 2003 and has since been employed for a variety of applications. It owes its unique features to certain effects of ... -
Process Parameters Optimization for Ultrasonically Consolidated Fiber-Reinforced Metal Matrix Composites
(2006-09-14)As an emerging rapid prototyping technology, Ultrasonic Consolidation (UC) has been used to successfully fabricate metal matrix composites (MMC). The intent of this study is to identify the optimum combination of processing ... -
Processing of Silicon Carbide by Laser Micro Sintering
(2006-09-14)Silicon carbide – a solid with covalent bonds - is conventionally synthesized via the Acheson process. Usually solid bodies of silicon carbide with definite shapes are generated from the grained material via hot isostatic ... -
Rapid Manufactured Textiles
(2006-09-14)Rapid Manufacturing (RM) is increasingly becoming a viable manufacturing process due to dramatic advantages that are achievable in the area of design complexity. Through the exploration of the design freedom, this paper ... -
Reduction of Machine Tool Times Through a Software/Hardware Integrated Solution
(2006)Toolmaking is an industry that creates metal moulds, generally of durable tool steels, for producing vacuum-formed and injection moulded plastic parts, which are used in thousands of everyday items such as mobile phones. ... -
Repeatability Analysis of 304L Deposition by the LENS® Process
(2006)Sandia National Laboratories is currently engaging in an effort to qualify Laser Engineered Net Shaping™ (LENS®) as a repair and modification process for high rigor metal components. As part of that effort, the LENS team ... -
A Review of Layer Based Manufacturing Processes for Metals
(2006)The metal layered manufacturing processes have provided industries with a fast method to build functional parts directly from CAD models. This paper compares current metal layered manufacturing technologies from including ... -
Selective Infrared Sintering of Polymeric Powders using Radiant IR Heating & Ink Jet Printing
(2006-09-14)Established methods of rapid prototyping by sintering polymeric powders have predominantly focused on the use of lasers to selectively heat the polymeric particles together to form fused layers. Although effective, this ... -
Selective Laser Melting of Biocompatible Metals for Rapid Manufacturing of Medical Parts
(2006-09-14)In recent years, digitizing and automation have gained an important place in fabrication of medical parts. Rapid Manufacturing could be very suitable for medical applications due to their complex geometry, low volume and ... -
Selective Laser Sintering of Passive Dynamic Ankle-Foot Orthoses
(2006)Passive dynamic ankle-foot orthoses (AFO’s) are used to improve gait performance in those with various neuromuscular disorders. An important design characteristic of passive dynamic AFOs is the storage and release of ... -
SLS Fabrication of Highly Porous Model Including Fine Flow Channel Network Aiming at Regeneration of Highly Metabolic Organs
(2006-09-14)Fabrication of very porous scaffold for regeneration of highly metabolic organs is reported. Polycaprolactone (PCL) powder was mixed with fine salt grains as filler and SLS processed to develop a model including fine ... -
Structurally Embedded Electrical Systems Using Ultrasonic Consolidation (UC)
(2006)Current research has demonstrated the use of Ultrasonic Consolidation (UC) to embed several USB-based sensors into aluminum, and is working toward embedding suites of sensors, heaters and other devices, connected via USB ... -
A Study of Static and Dynamic Mechanical Behavior of the Substrate in Ultrasonic Consolidation
(2006-09-14)A new 2-D FEM model is developed for a fundamental study of the time dependent mechanical behavior of the substrate in ultrasonic consolidation. The simulation shows that for a given vibration condition, the amplitude ... -
Support-Free Infiltration of Selective Laser Sintered (SLS) Silicon Carbide Preforms
(2006-09-14)Non-metallic objects are often difficult to manufacture due to high melting temperatures, poor sinterability, limited ductility, and difficulty in machining. Freeform fabrication techniques coupled with liquid infiltration ... -
Transferring Unit Cell Based Tissue Scaffold Design to Solid Freeform Fabrication
(2006)Designing for the freeform fabrication of heterogeneous tissue scaffold is always a challenge in Computer Aided Tissue Engineering. The difficulties stem from two major sources: 1) limitations in current CAD systems to ...
