Browsing 1998 International Solid Freeform Fabrication Symposium by Title
Now showing items 64-83 of 85
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Selective Laser Sintering of Zirconium Silicate
(1998)The Fraunhofer Institute of Production Technology (IPT) and the Fraunhofer Institute of Laser Technology (ILT) have joined forces in a project dedicated to Selective Laser Sintering (SLS) ofmetals and ceramics, funded ... -
Shell Cracking In Investment Casting with Laser Stereolithography Patterns
(1998)This paper presents an investigation of ceramic shell cracking during the burnout process in investment casting with internally webbed laser stereolithography patterns. We hypothesize that shell cracking will occur when ... -
Si/SiC-Ceramic low process shrinkage - high temperature material for the Laser Sinter process
(1998)Actual RP-systemsare very limited in producing adequate ceramic prototypes. In the presented process, the SiC..green part manufacturing bythe laser sintering process in combination with special postprocessing allows the ... -
Simulation of Laminated Object Manufacturing (LOM) with Variation of Process Parameters
(1998)A previously developed and verified thermal model for Laminated Object Manufacturing (LOM) was used to investigate the effects of various processing parameters on the temperature profile in a LOM part during the build ... -
Software Development for Laser Engineered Net Shaping
(1998)Laser Engineered Net Shaping, also known as LENSTM, is an advanced manufacturing technique used to fabricate near-net shaped, fully dense metal components directly from computer solid models without the use oftraditional ... -
Solid Freeform Fabrication Research In Engineering Education
(1998)Because Solid Freeform Fabrication (SFF) has an extremely wide range of potential applications, crossing traditional engineering and science boundaries, it is a technology that lends itself to multi-disciplinary activities ... -
Stereometric Design for Desk-Top SFF Fabrication
(1998)Solid Freeform Fabrication (SFF) technologies refer to the fabrication of physical parts directly from computer based solid models described by STL (Stereo Lithography) or VRML (Virtual Reality Modeling Language) files ... -
Strength of the DTM RapidSteel 1.0 Material
(1998)This paper reports the results of a study into the strength of the DTM RapidSteel 1.0 material. Elastic modulus and strength of the metal/copper composite material was investigated as a function of the distance from the ... -
Study of Ejection Forces In The AIM™ Process
(1998)The AIM™processhas been used to successfully produce short runs ofinjection moulded parts. One ofthe main drawbacks ofthe process is the tendency ofthe tools to be damaged during part ejection1 . At De Montfort University ... -
A Study on Weight Loss Rate Controlled Binder Removal From Parts Produced by FDC
(1998)The binder removal schedule of a binder in the ethylene vinyl acetate-wax system was analyzed by automatically adjusting the soaking duration based on the monitored weight loss of the polymer. The thermolysis of several ... -
Surface Finishing of Selective Laser Sintering Parts with Robot
(1998)Compared with conventional subtractive manufacturing technologies, RP has great benefits in shortening the design-manufacture cycle time of a product. Even ifmechanical properties are not considered, most RP products ... -
Temperature Dependent Optical Properties of Polymers as a Basis for Laser Process Modeling
(1998)The knowledge of laser absorption is essential to describe the behavior of polymers in different laser processes, i.e. SLS, LOM, etc. By means of transmission IR-spectroscopy a method for measuring temperature dependent ... -
A Theoretical Model for Optimization of SALD Parameters
(1998)This paper addresses the need to conduct theoretical work concerning an economical way of Solid Freeform Fabrication rendering by using selective Area Laser Deposition (SALD). The part in SALD rendering process is formed ... -
Thermal Behavior in the Lens Process
(1998)Direct laser metal deposition processing is a promising manufacturing technology which could significantly impact the length oftime between initial concept and finished part. For adoption ofthis technology in the ... -
Thermal Behavior of Parts Made by Direct Metal Laser Sintering
(1998)The Direct Metal Laser Sintering (DMLS) manufacturing technique induces thermal stresses in parts. When such parts are used at elevated temperatures, residual stresses are relaxed and the part can suffer significant ... -
Thermal-Expansion and Fracture Toughness Properties ofParts made from Liquid Crystal Stereolithography Resins
(1998)Liquid crystal (LC) resins are a new kind ofstereolithography material that can produce parts with structured or ordered morphologies instead ofthe amorphous morphologies that result from standard resins. The LC molecules ... -
Titanium Casting Molds via Selective Laser Sintering
(1998)A mold material system has been developed that can be SLS processed and used to cast titanium alloys. Stabilized zirconia, chosen forits low reactivity with molten titanium, has been sintered into mold shapes. The molds ... -
Topology Driven Improvement of FDC Build Parameters
(1998)The likeliest failure origin for advanced ceramics parts, prepared by fused deposition, is a void from improper fill. Adequate filling of each cross-section is dependent upon the deposition toolpath. Cross-sectional spaces ... -
Variable Thickness Ruled Edge Slice Generation and Three-Dimensional Graphical Error Visualization
(1998)This paper describes a simple variable thickness ruled edged slicing algorithm that produces slices with zero integrated error. In its present state, the algorithm requires presampled data to be taken from the STL file. ...
