Browsing 1999 International Solid Freeform Fabrication Symposium by Issue Date
Now showing items 1-20 of 47
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Si/SiC-Ceramtc Prototypes via LS2 1 -Process (Liquid Silicon Infiltration of Laser Sintered C-SiC Parts)
(1998)The liquid silicon infiltration of laser sinteredC-~iC parts (LS2 I) is solidfreeform fabrication technique which allows the production of complexshapedSi/SiC prototypes. A mixture of SiC powder and reactive polymer ... -
Mechanical and Rheological Properties of Feedstock Material for Fused Deposition of Ceramics and Metals (FDC and FDMet) and their Relationship to Process Performance
(1999)Fused deposition of ceramics (FDC) is a solid freeform fabrication technique based on extrusion of a highly loaded thermoplastic binder system. The present FDC process uses filament feedstock of 1.780 mm ± 0.025 mm ... -
Implementation and Evaluation of Novel Buildstyles in Fused Deposition Modeling (FDM)
(1999)Previous investigations have shown that the optimization of extrusion dynamics in .conjunction with the buildstyle pattern is of paramount importance to increase part quality in Fused Deposition Modeling (FDM). Recently ... -
Direct Laser Fabrication of High Performance Metal Components Via SLS/HIP
(1999)Recent research in the area of direct freeform fabrication of components via selective laser sintering/hot isostatic pressing (SLS/HIP) has focused on the processing of Alloy 625. Alloy 625 is a nickel-based superalloy ... -
Selective Laser Sintering Process Management Using a Relational Database
(1999)With more and more materials used in the Selective Laser Sintering (SLS) process, it is becoming necessary to use a database to manage the process efficiently. In this paper, a relational database for the SLS process is ... -
SALD and SALVI Virtual Laboratory
(1999)This paper describes efforts to apply virtual manufacturing techniques to produce machine parts using Solid Freeform Fabrication (SFF). In particular, the work was done to develop a Virtual SFF Laboratory for the Selective ... -
Cryogenic Mechanical Alloying of Poly (ether ether ketone) - Polycarbonate Composite Powders for Selective Laser Sintering
(1999)Mechanical alloying is a solid state processing technique traditionally used in the metallurgical industry to extend solubility limits in alloy systems. Mechanical alloying can also be used to blend polymer systems at ... -
Microstructure and Property Optimization of LENS Deposited H13 TooFSteel
(1999)Direct laser metal deposition is a means of near net shape processing that offers a number of advantages including rapid prototyping and small lot production. With the LENS (Laser Engineered Net Shape) process [Ref 1], ... -
Novel Ceramics and Metal-Ceramic Composites via Fused Deposition Process
(1999)Indirect fused·· deposition process is utilized.·.. to ·fabricate controlled porosity ceramic structures using alumina, mullite, zirconia, LSCF-perovskite, tricalcium phosphate and hydroxyapatite, where pore size, pore ... -
Coated Feedstock for Fabrication of Ceramic Parts by CAM-LEM
(1999)In laminated object manufacturing of ceramic components, lamination is one of the most important materials issues. Good lamination ensures monolithic component after firing. Otherwise, lamination defects that inevitably ... -
Fractal Growth Modeling of Electrochemical Deposition in Solid Freeform Fabrication
(1999)A new rapid tooling technique ElectroChemical Liquid Deposition Based Solid Freeform Fabrication (ECLD-SFF) was introduced in this paper. In the ECLD-SFF a substrate made of or coated with conductive materials is connected ... -
An Ejection Mechanism Design Method for AIM Tools
(1999)One of the key advantages of AIM tooling is time savings when producing small batch production quality parts. However, designing suitable ejection mechanisms is becoming a bottleneck. There are two goals of this paper. ... -
Optimization of Powder Layer Density in Selective Laser Sintering
(1999)An important parameter for the overall quality of SLS parts is the density of powder layers before sintering. Previous studies have shownthatthe control of powder particle shape and size distribution can increase the ... -
A Minimum Bounding Box Algorithm and its Application to Rapid Prototyping
(1999)This paper describes a method for determining the minimum bounding box of an arbitrary solid. The method simplifies the complex three-dimensional problem by projecting the solid onto the three principal planes and makes ... -
Atmospheric Control during Direct Selective Laser Sintering of Stainless Steel 314S Powder
(1999)Stainless steel grade 314S powders have been Selective Laser Sintered (SLS) in three different argon/air (oxygen) atmospheric mixtures. The amount of oxygen present during the heating, melting and fusing of the metal ... -
Application of Design of Experiments to Extrusion Freeform Fabrication (EFF) of Functional Ceramic Prototypes
(1999)Extrusion Freeform Fabrication (EFF) is an adaptation of the Stratasys Fused Deposition M?deling(FDMTM).. process.for the· Solid FreeformFabrication (SFF) .of functional ceramic prototypes. It isac0tnplex process involving ... -
Process Variable Effects on Laser Deposited Ti-6Al-4V
(1999)An initial study ofthe processing parameters affecting deposition quality ofTi-6AI-4V was conducted using the LENSTM direct laser deposition system. The significant number ofprocess variables presents a problem in determining ... -
Selective Laser Sintering of Zirconia with Micro-Scale Features
(1999)Recent work in Selective Laser Sintering of ceramics at the University of Texas at Austin demonstrates the capability to produce zirconia parts with fine features. Zirconia powder was pre-processed into spherical particles, ... -
Extrusion Freeform Fabrication of Functional Ceramic PrototypeS
(1999)Extrusion Freeforming (EFF) and Fused Deposition Modeling (FDM) processes are established freeforming techniques capable of fabricating complex shaped ceramic prototypes by the sequential deposition and solidification ... -
An Interactive Virtual System for Simulation and Optimization of Rapid Prototyping
(1999)The paper describes the development of a computer system for simulation and optimization of rapid prototyping (RP) processes. The system provides a test-bed for virtual prototyping by integrating product design and RP ...
