• 2D Wavelet Analysis of Solid Objects: Applications in Layered Manufacturing 

      Roosendaal, Mark D. Van; Chamberlain, Peter; Thomas, Charles (1998)
      In this paper, we introduce two-dimensional discrete wavelet basis functions and their application in the analysis and modeling ofsurface topography in layered manufacturing objects. In previous work, a one dimensional ...
    • 3D Welding and Milling for Direct Prototyping of Metallic Parts 

      Song, Yong-Ak; Park, Sehyung; Hwang, Kyunghyun; Choi, Doosun; Jee, Haeseong (1998)
      Welding has been used for the direct fabrication of metallic prototypes and prototype tools by several research institutes. Since welding alone is not able to deliver the accuracy and the surface quality needed for ...
    • Art to Engineering: Pervasive RP activities at Arizona State University 

      Razdan, Anshuman; Henderson, Mark R.; Collins, Dan (1998)
      We present a sampling ofwidely diverse Rapid Prototyping activities at ASU. Through the interdisciplinary PRISM project, RP is firmly involved in three areas: education, research and outreach. Two courses have been ...
    • Automated Fabrication of Complex Molded Parts Using Mold SOM 

      Cooper, A.G.; Kang, S.; Kietzman, J.W.; Prinz, F.B.; Lombardi, J.L.; Weiss, L. (1998)
      Mold Shape Deposition Manufacturing (Mold SDM) is a Solid Freeform Fabrication technique for producing complex shaped fugitive wax molds. A vari~ty of castable. polymer and ceramic materials have been used to make parts ...
    • Automated Fabrication of Nonresorbable Bone Implants Using Laminated Object Manufacturing (LOM 

      Steidle, Cheri; Klosterman, Don; Osborne, Nora; Graves, George; Chartoff, Richard (1998)
    • Bevel Cutting Methods and Cutting Trajectory Control for Steel Laminations Used in Tooling 

      Walczyk, Daniel F. (1998)
      Bevel cutting of steel laminations used in profiled-edge laminated tooling allows for a more accurate representation of the intended die surface, since stair-stepping at the edges is eliminated. Based on experiments involving ...
    • Binder Formulation in EVA-wax system for Fused Deposition of Ceramics 

      Pekin, Senol; Zangvil, Avigdor; Ellingson, William (1998)
      Blends in the ethylene vinyl acetate (EVA) - wax system have been evaluated as potential binders.to be used in fused deposition of ceramics (FDC). In order to obtain good handling strength, it was indicated that the ...
    • Build Time Estimations for Large Scale Modelling 

      Mensing, G.; Gibson, I. (1998)
      Achieving speedy results in model making is very much desired if not a necessity in ahnost any manufacturing industry. There is no doubt that rapid prototyping contributes to this process. It is generally considered that ...
    • Composites with Gradient Properties From Solid Freeform Fabrication 

      Gervasi, V.R.; Crockett, R.S. (1998)
      TetraCast is a build style developed by Milwaukee School ofEngineering involving stereolithography patterns produced with an open cellular structure inside a surface shell. Composites are created using this pattern as a ...
    • Curved Layer LOM ofCeramics and Composites 

      Klosterman, Donald A.; Chartoff, Richard P.; Osborne, Nora R.; Graves, George A.; Lightman, Allan; Han, Gyoowan; Bezeredi, Akos; Rodrigues, Stan (1998)
      A novel rapidprototyping (RP) technology incorporating a curved layer building style has been developed. The new process,based on Laminated Object Manufacturing (LOM), is suited for efficient fabrication of curved layer ...
    • Designing Conformal Cooling Channels for Tooling 

      Xu, Xiaorong; Sachs, Emanuel; Allen, Samuel; Cima, Michael (1998)
      SFF technologies have demonstrated the potential to produce tooling with cooling channels which are conformal to the molding cavity. 3D Printed tools with conformal cooling channels have demonstrated simultaneous ...
    • Development of a Binder Formulation for Fused Deposition of Ceramics 

      McNulty, Thomas F.; Cornejo, Ivan; Mohammadi, Farhad; Danforth, Stephen C.; Safari, Ahmad (1998)
      A new binder formulation has been developed for Fused Deposition of Ceramics (FDC) which consists of commercially-available polymer constituents.. This formulation was used. in conjunction with lead zirconate titanate ...
    • Dimensional Issues in Stereolithography 

      Winmill, David L.; Hoopes, Daniel M.; Jayanthi, Suresh S. (1998)
      New stereolithography photopolymers have recently been introduced that provide a wider range of functional properties similar to those of high-density polyethylene. One of the important criteria for these materials is ...
    • Dimensional Variability Analysis ln Post-Processing Of Rapid Tooling 

      Wang, Wanlong; Conley, James G; W Stoll, Henry (1998)
      Rapid tooling for sand casting can be made by creating pattern with elements made by solid freeform fabrication (SFF) devices. Using this approach, post-processing and hand finishing remain as necessary steps to improve ...
    • Direct Injection Molding Tooling Inserts from the SLS Process with Copper Polyamide 

      Nelson, Christian; Kepler, Jason; Booth, Rick; Conner, Phillip (1998)
      The "RapidTool" Short Run (SR) Tooling Process using the Copper Polyamide material provides a route to mold inserts for injection molding made directly in the Selective Laser Sintering machine. The STL files for the mold ...
    • Direct Laser Fabrication of a Gas Turbine Engine Component - Microstructure and Properties - Part I 

      Das, Suman; P. Fuesting, Timothy; Danyo, Gregory; E. Brown, Lawrence; Beaman, Joseph J.; Bourell, David L.; Sargent, Kathleen (1998)
      This paper presents the development of a new technique for the production of abrasive turbine blade tips by direct laser processing. This superalloy cermet component is an integral part of the low pressure turbine sealing ...
    • Domain Decomposition and Space Filling Curves in Toolpath Planning and Generation 

      Bertoldi, M.; Yardimci, M; Pistor, C. M; Guceri, S. I. (1998)
      Ever increasing computer performance, along with significant developments in CADI CAM technology and high precision digital motion controllers lead to rapid and significant developments in the field ofrapid prototyping ...
    • EFAB: Batch Production of Functional, Fully-Dense Metal Parts with Micron-Scale Features 

      Cohen, Adam; Zhang, Gang; Tseng, Fan-Gang; Mansfeld, Florian; Frodis, Uri; Will, Peter (1998)
      EFAB (Electrochemical FABrication) is a new SFF process with.thepotentialto.economically fabricate prototypes ormass production quantities offunctional, mesoscale-microscaleParts andmechanisms. EFAB generates an entire ...
    • Effective MechanisUls of Multiple LED Photographic Curing 

      Loose, Kai; Niino, Toshiki; Nakagawa, Takeo (1998)
      Multiple LED Photographic Curing (MPC) has proven capable of drawing cross sections of three-dimensional objects like printing a sheet of paper. Using raster scanning, however, simultaneously exposing a photopolymer with ...
    • Enhanced controlling of the SLS Process during a build. 

      . Papadatos, Alexandre L; Stanley Jr, Kenneth; Ahzi, Said; W. Paul, Frank (1998)
      Current commercial Rapid Prototyping(RP) systems like Stereolithography (3D Systems Corporation) and Selective Laser Sintering (DTM Corporation) use galvanometers from General Scanning Inc. (GSI) for thepositi()ning of ...