2005 International Solid Freeform Fabrication Symposium
Proceedings for the 2005 International Solid Freeform Fabrication Symposium. For more information about the symposium, please see the Solid Freeform Fabrication website .
The Sixteenth Solid Freeform Fabrication (SFF) Symposium, held at The University of Texas in Austin on August 1-3, 2005, was attended by 106 national and international researchers from twelve countries. Papers addressed SFF issues in computer software, machine design, materials synthesis and processing, and integrated manufacturing. The diverse domestic and foreign attendees included industrial users, SFF machine manufacturers, university researchers and representatives from the government. The Symposium organizers look forward to its being a continuing forum for technical exchange among the expanding body of researchers involved in SFF.
The Symposium was again organized in a manner to allow the multi-disciplinary nature of the SFF research to be presented coherently, with various sessions emphasizing process development, design tools, modeling and control, process parameter optimization, applications and materials. We believe that documenting the changing state of SFF art as represented by these Proceedings will serve both those presently involved in this fruitful technical area as well as new researchers and users entering the field.
This year’s best oral presentation was given by Nathan Crane of MIT. Selection is based on the overall quality of the paper, the presentation and discussion at the meeting, the significance of the work and the manuscript submitted to the proceedings. The paper title was, “Improving Accuracy of Powder Sintering-based SFF Processes by Metal Deposition from Nanoparticle Dispersion”. Selected from over 50 oral presentations, his presentation appears on Page 261 of this Proceedings. The best poster presentation selected from 11 posters was given by Kunnayut Eiamsa-ard from the University of Missouri-Rolla. The paper title was, “Part Repair using a Hybrid Manufacturing System” and appears on Page 425.
The editors would like to extend a warm “Thank You” to Rosalie Foster for her detailed handling of the logistics of the meeting and the Proceedings, as well as her excellent performance as registrar and problem solver during the meeting. We are grateful to Bryan Blackmur and Cindy Pflughoft who helped with Proceedings production. We would like to thank the Organizing Committee, the session chairs, the attendees for their enthusiastic contributions, and the speakers both for their significant contribution to the meeting and for the relatively prompt delivery of the manuscripts comprising this volume. We look forward to the continued close cooperation of the SFF community in organizing the Symposium. We also want to thank the Office of Naval Research (N00014-05-1-0789) and the National Science Foundation (DMI 0522509) for supporting this meeting financially. The meeting was co-organized by the University of Connecticut at Storrs, and the Mechanical Engineering Department, Laboratory for Freeform Fabrication and the Texas Materials Institute at The University of Texas at Austin.
Recent Submissions
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Nanotailoring Stereolithography Resins for Unique Applications using Carbon Nanotubes
(2005-08-03)Nanostructured materials and exploiting their properties in stereolithography (SL) may open new markets for unique rapidly manufactured functional devices. Controlled amounts of multiwalled carbon nanotubes (MWCNTs) were ... -
The Potential of Freeform Construction Processes
(2005-09-07)The level of automation technology and processes control found in modern day construction lags significantly behind other industries such as automotive and aerospace. The construction industry has health and safety issues ... -
Freeform Fabrication of Ionomeric Polymer-Metal Composite Actuators
(2005-08-03)Ionomeric polymer-metal composite (IPMC) actuators are a type of soft electromechanically active material which offers large displacement, rapid motion with only ~1V stimulus. IPMC’s are entering commercial applications ... -
Stereolithography: A Basis for Integrated Meso Manufacturing
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Rapid Fabrication of Smart Tooling with Embedded Sensors by Casting in Molds Made by Three Dimensional Printing
(2005-08-26)This paper is to investigate the feasibility of constructing “smart tooling” by embedding thin film sensors, specifically, thin film thermocouples (TFTC) in castings made by molds formed by 3 Dimensional Printing (3DP). ... -
Improvement of Electrical Conductivity of SLS PEM Fuel Cell Bipolar Plates
(2005-08-03)Previous work in this research demonstrated the feasibility of fabrication of proton exchange membrane (PEM) fuel cell bipolar plates by an indirect selective laser sintering (SLS) route. Properties of the SLS bipolar ... -
Rapid Prototyping of PEM Fuel Cell Bi-Polar Plates using 3D Printing and Thermal Spray Deposition
(2005)This article presents the results of exploratory research on novel methods for the fabrication of functional, metallic, gas flow, bi polar plates (BPP) for use in proton exchange membrane fuel cells (PEMFC). Low cost, ... -
Hydrogels in Stereolithography
(2005-08-23)The use of stereolithography (SL) for fabricating complex three-dimensional (3D) tissue engineered scaffolds of aqueous poly(ethylene glycol) (PEG) hydrogel solutions is described. The primary polymer used in the study ... -
Part Repair using a Hybrid Manufacturing System
(2005-08-03)Nowadays, part repair technology is gaining more interest from military and industries due to the benefit of cost reducing as well as time and energy saving. Traditionally, part repair is done in the repair department ... -
Workpiece Alignment for Hybrid Laser Aided Part Repair Process
(2005)Work piece alignment is a key issue for hybrid laser aided part repair, a process utilizing both machining and laser deposition. Proper alignment can greatly improve the accuracy of the repair process. This paper introduces ... -
Simplified Production of Large Prototypes using Visible Slicing
(2005)Rapid Prototyping (RP) is a totally automatic generative manufacturing technique based on a “divide-and-conquer” strategy called ‘slicing’. Simple slicing used on 2.5-axis kinematics of the existing RP machines is ... -
Techno-Economic Analysis of Hybrid Layered Manufacturing
(2005)Subtractive manufacturing (CNC machining) has high quality of geometric and material properties but is slow, costly and infeasible in some cases; additive manufacturing (RP) is just the opposite. Total automation and ... -
Mechanism for Determination of G-factors for Solid Freeform Fabrication Techniques Based on Large Heat Input
(2005)A major class of Solid Freeform Fabrication (SFF) methods for metal deposition are based on large heat input. The geometry and microstructural properties of the deposition depend primarily on the heat input and the ... -
Thermal Modeling of Metal Powder-Based Selective Laser Sintering
(2005-08-03)In order to get a better understanding of Selective Laser Sintering (SLS) process of the metal powders, three-dimensional modeling of laser sintering of a metal powder mixture that contains two kinds of metal powder with ... -
Thermo-structural Finite Element Analysis of Direct Laser Metal Deposited Thin-Walled Structures
(2005-08-26)Multilayer direct laser metal deposition is a fabrication process in which the parts are fabricated by creating a molten pool into which particles are injected. During fabrication, a complex thermal history is experienced ... -
Compensation Zone Approach to Avoid Z Errors in Mask Projection Stereolithography Builds
(2005-08-26)Print-through results in unwanted polymerization occurring beneath a part cured using Mask Projection Stereolithography (MPSLA) and thus creates error in its Z dimension. In this paper, the "Compensation zone approach" ... -
Use of Parameter Estimation for Stereolithography Surface Finish Improvement
(2005-08-03)In order to improve Stereolithography (SLA) surface finish, a systematic approach based on estimation of process parameters is needed. In this paper, the exposure on a desired SLA build surface is formulated as a function ...