Proceedings for the 2009 International Solid Freeform Fabrication Symposium. For more information about the symposium, please see the Solid Freeform Fabrication website .

Recent Submissions

  • Design, Fabrication and Evaluation of Negative Stiffness Elements 

    Kashdan, Lia; Seepersad, Carolyn; Haberman, Michael; Wilson, Preston S. (University of Texas at Austin, 2009-09)
    Recent research has shown that constrained bistable structures can display negative stiffness behavior and provide extremal vibrational and acoustical absorptive capacity. These bistable structures are therefore compelling ...
  • Scaffold Fabrication for Drug Delivery System Using Layered Manufacturing Methods 

    Chu, W.S.; Jung, B.S.; Ahn, H. (University of Texas at Austin, 2009-09-15)
    To fabricate functional shape of drug delivery system (DDS), various processes are used. In this research, based on layered manufacturing, two different processes of 1) replication and 2) direct deposition were used to ...
  • Experimental Characterization of High Viscosity Droplet Ejection 

    Meachum, J. Mark; O'Rourke, Amanda; Yang, Yong; Fedorov, Andrei G.; Degertekin, F. Levent; Rosen, David W. (University of Texas at Austin, 2009-09)
    Additive Manufacturing via Microarray Deposition (AMMD) expands the allowable range of physical properties of printed fluids to include important, high-viscosity production materials (e.g., polyurethane resins). This ...
  • Cellular Structures for Optimal Performance 

    Engelbrecht, Sarah; Folgar, Luis; Rosen, David W.; Schulberger, Gary; Williams, Jim (University of Texas at Austin, 2009-09)
    Cellular material structures, such as honeycombs and lattice structures, enable unprecedented stiffness and strength characteristics, for a given weight. New design and CAD technologies to construct cellular materials ...
  • Customised Layer Deposition for Chemical Reactor Applications 

    Singh, J.; Hauser, C.; Chalker, P.R.; Sutcliffe, C.J. (University of Texas at Austin, 2009-09)
    This paper discusses the development and application of an adaptive slicing algorithm for use with Digital Light Processing (DLP) for the manufacture of micro chemical reactors. Micro reactors have highly complex ...
  • Hydrocolloid Printing: A Novel Platform for Customized Food Production 

    Cohen, Daniel L.; Lipton, Jeffrey I.; Cutler, Meredith; Coulter, Deborah; Vesco, Anthony; Lipson, Hod (University of Texas at Austin, 2009-09-18)
    Solid Freeform Fabrication (SFF) of food has the potential to drastically impact both culinary professionals and laypeople; the technology will fundamentally change the ways we produce and experience food. Several imposing ...
  • Recent Progress on Scanning Laser Epitaxy: A New Technique for Growing Single Crystal Superalloys 

    Kirka, Michael; Bansal, Rohan; Das, Suman (University of Texas at Austin, 2009-09)
    This paper presents recent progress on scanning laser epitaxy, a laser manufacturing technique being developed for achieving single crystal growth in nickel‐based superalloys. Investigations have been performed for ...
  • High Therma 

    España, Félix A.; Balla, Vamsi Krishna; Bose, Susmita; Bandyopadhyay, Amit (University of Texas at Austin, 2009-09-15)
    Surface modification has been used to improve wear resistance, corrosion resistance and thermal barrier properties of metals. However, no significant attempts have been made to improve thermal conductivity by surface ...
  • Multiple Material Microstereolithography 

    Choi, Jae-Won; MacDonald, Eric; Wicker, Ryan (University of Texas at Austin, 2009-09)
    We have previously described the development of a µSL system using a Digital Micromirror Device (DMDTM) for dynamic pattern generation and an ultraviolet (UV) lamp filtered at 365 nm for crosslinking the photoreactive ...
  • Design and Manufacture of a Formula SAE Intake System Using Fused Deposition Modeling and Fiber-Reinforced Composite Materials 

    Ilardo, Ryan; Williams, Christopher B. (University of Texas at Austin, 2009-09)
    In this paper, the authors discuss the design and manufacture of an intake system for a 600cc Formula SAE engine. Specifically, Fused Deposition Modeling is used to create an intake system (consisting of a plenum, plenum ...
  • Reprinting the Telegraph: Replicating the Vail Register using Multi-Materials 3D Printing 

    Alonso, Matthew Paul; Malone, Evan; Moon, Francis C.; Lipson, Hod (University of Texas at Austin, 2009-09)
    Solid Freeform Fabrication is a family of manufacturing processes that create three-dimensional objects by depositing material, layer-by-layer. Traditionally, this technology has been used to fabricate passive parts, but ...
  • Advanced Heat Sinks Enabled by Three-Dimensional Printing 

    Lyons, Alan; Krishnan, Shankar; Mullins, John; Hodes, Marc; Hernon, Domhnaill (University of Texas at Austin, 2009-09-15)
    With the rapid rise in power dissipated by integrated circuits, improved heat sinks designs are needed to decrease the thermal resistance between them and forced air streams. Manufacturing methods such as extrusion, ...
  • Design of Periodic Cellular Structures for Heat Exchanger Applications 

    Kumar, Vikas; Manogharan, Guhaprasanna; Cormier, Denis R. (University of Texas at Austin, 2009-09)
    Powder based metal additive manufacturing processes generally produce parts with a textured surface. Although surface roughness is undesirable in most cases, it can be advantageous for applications such as heat exchangers ...
  • Electronics Integration in Conformal Substrates Fabricated with Additive Layered Manufacturing 

    Castillo, Sylvia; Muse, Dan; Medina, Frank; MacDonald, Eric; Wicker, Ryan (University of Texas at Austin, 2009-09)
    A three-dimensional (3D) accelerometer sensor system with microprocessor control was fabricated using a previously developed integrated layered manufacturing system that combines conductive ink dispensing with stereolithography ...
  • Selective Electron Beam Melting: A new Way to Auxetic Cellular Structures 

    Schwerdtfeger, Jan; Heinl, Peter; Singer, Robert F.; Körner, Carolin (2009-09-18)
    This paper is concerned with the build up and characterisation of well defined auxetic structures from Titanium alloys through Selective Electron Beam Melting (SEBM).The negative Poisson’s ratio of auxetic structures ...
  • Brick Printing: Freeform Fabrication of Modular Architectural Elements with Embedded Systems 

    Lipton, Jeffrey I.; Cohen, Daniel; Lipson, Hod (University of Texas at Austin, 2009-09-15)
    We propose the use of modular, printed bricks to enable the integration of building systems and various processing techniques through the use of scalable printer platforms. This is enabled by a novel material platform ...
  • Process and Properties of Carbon Black-Filled Electrically Conductive Nylon-12 Nanocomposites Produced by Selective Laser Sintering 

    Artreya, S.; Kalaitzidou, K.; Das, S. (University of Texas at Austin, 2009-09)
    Electrically conductive polymer composites are suitable for use in the manufacture of antistatic products and components for electronic interconnects fuel cells and electromagnetic shielding. Selective laser sintering ...
  • Flammability and Thermal Properties of Polyamide 11-Alumina Nanocomposites 

    Lao, S.C.; Koo, J.H.; Moon, T.J.; Hadisujoto, B.; Yong, W.; Pilato, L.; Wissler, G. (University of Texas at Austin, 2009-09)
    Neat polyamides 11 and 12 lack high strength/high heat resistance and flame retardancy. The incorporation of selected nanoparticles is expected to enhance these properties to a level that is desired and required for ...
  • Powder Pre-Conditioning for the LS Process 

    Majewski, C.E.; Horsford, P.M.; Hopkinson, N. (University of Texas at Austin, 2009-09-18)
    It has previously been shown that the use of recycled Nylon-12 powder leads to increased Elongation at Break (EaB) of Laser Sintered (LS) parts, possibly due to elevated powder temperature in the part bed causing increases ...
  • New polymerization-mixture formulation for jetting: An approach to production of polyamide 6 parts 

    Khodabakhshi, K.; Gilbert, M.; Dickens, P.; Hague, R.; Fathi, S. (University of Texas at Austin, 2009-09)
    Poor mechanical properties of manufactured parts is one of the main problems in most of the RP and RM processes. This work deals with a study on formulation of new polymerization mixtures with the aim of being used in ...

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