1997 International Solid Freeform Fabrication Symposium
Recent Submissions
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Reaction Heat Effect On Initial Linear Shrinkage of Sterelothigraphy Resins
(1997)In the industrial use ofthe Stereolithography, the precision is always a problem. Basic phenomenon of the solidification shrink has not suffiCiently investigated This study aims at clarifying the initial linear shrinkage ... -
Modeling of Mechanical Behavior of SLA Parts
(1997)In recent years, important efforts have been focused on producing functional parts using Stereolithography Apparatus ( SLA ). One of the applications is the development of rapid polymer tooling such as dies for injection ... -
On dimensional stabilities: Modeling of the Bonus-Z during the SLS Process
(1997)This work is a first step towards the prediction of the dimensions and thermomechanical properties ofparts made with the Selective Laser Sintering (SLS) technology. An important variation of the dimensions is found in ... -
Simulation Of Coarsening During Laser Engineered Net Shaping
(1997)Laser Engineered Net_Shaping, otherwise known as LENSTM, is an advanced manufacturing technique used to fabricate complex near net shaped components directly from engineering solid models without the use of dies or ... -
Thermal Analysis Of Fused Deposition
(1997)Fused Deposition processes involve successive melting, extrusion and solidification of thermoplastic polymer melts. Fluid mechanics and heat transfer of neat or particle-filled polymeric melts, viscoelastic deformation ... -
A Thermal Model For Laminated Object Manufacturing (LOM)
(1997)A thennal model for Laminated Object Manufacturing (LOM) has been developed. The model is based on 3-dimensional transient heat conduction in a rectangular geometry LOM part. Heat transfer from the heated roller to the ... -
The Use ofVRML to Integrate Design and Solid Freeform Fabrication
(1997)The Virtual Reality Modeling Language (VRML) was created to put interconnected 3D worlds onto every desktop. The 3D VRML format has the potential for 3D fax and TeleManufacture. An architecture and methodology of using ... -
An Integrated Software System for Process Planning for Layered Manufacturing
(1997)An integrated process planning system for layered manufacturing (LM) reduces the time between design and part fabrication and improves the quality of the final part. Process planning for most LM processes includes part ... -
Optimising Build Parameters and Hatch Style for Part Accuracy in Stereolithography
(1997)A detailed study of the effects of layer thickness, hatch spacing, hatch overcure depth, and hatch fill cure depth on the quality of the StereoLithography (SL) product was carried out using acrylic based resin. Taguchi ... -
CAD and Control Technologies for Computer-Aided Manufacturing of Laminated Engineering Materials
(1997)This paper presents recent progress in software, material handling and tangent-cutting control in support of Computer-Aided Manufacturing of Laminated Engineering Materials(CAM-LEM). Progress in CAD focuses on the ... -
Validation ofRapid Prototyping Material for Rapid Experimental Stress Analysis
(1997)The paper will detail the validation work carried out on various Rapid Prototyping (RP) materials to determine their suitability for the application of Thermoelastic Stress Analysis. The overall objective is to drastically ... -
Build Style Decision Support for Stereolithography
(1997)When building parts in a stereolithography apparatus (SLA), the user is faced with many decisions regarding how the part will be built. The quality of the build can be controlled by the user via changing one of several ... -
A data format providing side wall orientation and adaptive slicing for use in stepless rapid prototyping
(1997)Current Rapid Prototyping systems mainly use 2D layers building techniques that result in the 'staircase' effect on slanted surface. A new method has been developed to eliminate the 'staircase' effect and to improve the ... -
Solid Model Creation for Materially Graded Objects
(1997)Materially graded objects are objects composed of different constituent materials and could exhibit continuously varying composition and/or microstructure [1][2]. Such continuous changes results in gradation in their ... -
Reverse Engineering: Practical Considerations for Rapid Prototyping
(1997)It is now possible to generate threedimensional (3D) solid models of extremely complicated systems from which full plastic replicas can be generated using a variety of rapid prototyping technologies. The cycle time ... -
Reverse Engineering: Algebraic Boundary Representations to Constructive Solid Geometry
(1997)Recent advances in reverse engineering have focused on recovering a boundary representation (b-rep) of an object, often for integration with rapid prototyping. This boundary representation may be a 3-D point cloud, a ... -
Using adaptive ruled layers for Rapid Prototyping: principles and first results
(1997)Current 2.5D layered rapid prototyping has as disadvantage the staircase effect, requiring thin layers to be used to achieve a reasonable accuracy. Slices with inclined outer surfaces can be constructed using linear ... -
An Analysis Technique for Layered Manufacturing Based on Quasi-Wavelet Transforms
(1997)An analysis technique based on the Wavelet transform (WT) has been recently introduced that allows the spatial frequency content of objects produced by layered manufacturing (LM) techniques to be interpreted in terms ... -
The Clemson Intelligent Design Environment For Stereolithography-Cides 2.0
(1997)There are a large number of commercial Rapid Prototyping (RP) devices available today. All ofthese machines begin with a Computer-Aided Design (CAD) model, which is tessellated, sliced and then built layer-by-Iayer on ...
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