Browsing 2002 International Solid Freeform Fabrication Symposium by Issue Date
Now showing items 1-20 of 75
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Laser-Based Meso/Micro Rapid Manufacturing System
(2002)The meso/micro layered manufacturing technologies have significant implications for the design and fabrication of complex miniature structures. A laser-based additive/subtractive Rapid Manufacturing system is thus developed ... -
Adhesive Bonding of Sheet for Laminated Metal Tooling
(2002)There exists a significant body of work on metal laminate tooling built by the “cut-stack-bond” approach; however, automation with this method is difficult. Building laminations by "stack-bond-cut" sequence, on the other ... -
Selective Laser Sintering of Bioactive Glass-Ceramics
(2002)An initial investigation was held into the feasibility of producing bone replacement implants from a bioactive glass-ceramic using the Selective Laser Sintering (SLS) process. The work presented considers both a direct ... -
Scaling Laws for Melting and Resolidification in Direct Selective Laser Sintering of Metals
(2002)We present a one-dimensional model describing the physical mechanisms of heat transfer, melting and resolidification taking place during and after the interaction of a laser beam with a semi-infinite metal surface. The ... -
Effects of Cryogenic Aging on a Rapid Prototyped (RP) Polymer
(2002)Little research has been done on the post-processing (aging) of rapid prototyped (RP) polymers at temperatures below 123K (–238˚F). Test specimens of RP thermosetting resin (DSM-Somos 8110) were fabricated and cryogenically ... -
Application of SFF to Preoperative Planning and Surgical Rehearsal for Treatment of Limb Deformities in Dogs
(2002)This report describes SFF-aided assessment and preoperative planning for treatment of bilateral multifocal pelvic limb deformities in a one-year old German Shepherd dog. CT scans were converted to solid models and ... -
Parts Design and Manufacturing Process Support System Based on Stereolithography Manufacturing Knowledge Database
(2002)Although rapid prototyping technology has a strong point that complex parts can be manufactured easily, it is difficult to satisfy further higher precision if designer isn't familiar with the technological know-how of ... -
The Development of an Integrated Graphical SLS Process Control Interface
(2002)This paper presents the systematic development of a man/machine interface for Selective Laser Sintering. The interface developed integrates geometry design, process data/code generation, power control and communication ... -
Direct Selective Laser Sintering of Superalloys
(2002)The advantages of powder metallurgy lie within the large degree of freedom for material design and thus is especially used in the production of high performance parts. Layer manufacturing is an appropriate method to ... -
Development of a Prototype Low-Voltage Electron Beam Freeform Fabrication System
(2002)NASA’s Langley Research Center and Johnson Space Center are developing a solid freeform fabrication system utilizing an electron beam energy source and wire feedstock. This system will serve as a testbed for exploring ... -
Morphology of Direct SLS-Processed Stainless Steel Layers
(2002)This paper discusses work done to analyse the shape of stainless steel layers generated by direct selective laser sintering (SLS). Laser power, scan spacing and scanning speed have been varied, to investigate their effect ... -
XML Representation and Process Algorithm for Layered Manufacturing of Heterogeneous Objects
(2002)In the fast developing technology of solid freeform fabrication, it remains a challenge to fabricate a heterogeneous object by layered manufacturing because conventional CAD systems and STL databases do not contain ... -
Finite Element Thermal Analysis of Three Dimensionally Printed (3DP™) Metal Matrix Composites
(2002)Three Dimensional Printing, 3DP™, is under development for the production of metal composites through solid freeform fabrication of a skeleton, followed by sintering and then infiltration of a second, lower melting metal. ... -
Mechanical Properties of Pure Titanium Models Processed by Selective Laser Melting
(2002)The influence of laser processing parameters on mechanical properties and microstructure of pure titanium models made by selective laser melting is investigated. The density of the models can reach higher than 95% under ... -
Multi-Material and Advanced Geometry Deposition via Laser Chemical Vapor Deposition
(2002)Laser Chemical Vapor Deposition (LCVD) as a manufacturing process holds the potential to build compositionally and geometrically unique objects. Georgia Tech’s LCVD system has been used in the past to create three-dimensional ... -
Design of Thermal Environment in Plastic Injection Mold Based on Evaluation of Resin Cooling Uniformity
(2002)Thermal state in plastic injection molds greatly influences the molding quality of products. This paper discusses the optimum design of thermal environment in the molds by observing and estimating the cooling uniformity ... -
The Freeform Fabrication of Structurally Optimized and Complexly Shaped Metal Tubular Components
(2002)The service conditions of many structural frames composed of tubular metal components would ideally warrant the use of high strength-to-weight ratio components with shapes and internal geometries that respond to ... -
Rapid Prototyping (through SLS) as Visualisation Aids for Architectural Use
(2002)The Cambridge International Dictionary of English, explains the word "Design" as a "pattern used to decorate something". Whilst this very narrow-minded definition can spark a debate on the meaning of design, it does ... -
Object-Oriented Modeling and Fault Detection of a Powder Feeder for a Laser Metal Deposition System
(2002)One of the most critical components of a laser metal deposition system is the powder feeder unit. Techniques are required to efficiently design and analyze these systems and to ensure fault tolerance during the operation. ...
