• 3-D Laser Shaping Of Ceramic and Ceramic Composite Materials 

      Todd, J.A.; Copley, S.M.; Yankova, M.I.; Fariborzi, F.; West, K. (1995)
      A versatile, automated, laser-based system, capable of producing complex threedimensional shapes of ceramic and ceramic composite materials, through either controlled layer ablation or solid freeform fabrication, is ...
    • A 3D Print Process For Inexpensive Plastic Parts 

      Ederer, Ingo; Hochsmann, Rainer; Machan, Jurgen (1995)
      Many of the currently available RP-Systems are suitable for building design models of arbitrarily shaped parts. However, most of these RP processes use sophisticated and expensive equipment which is not well suited for ...
    • Accuracy and Mechanical Behavior of Metal Parts Produced by Lasesrintering 

      Pintat, T.; Greul, M.; Greulich, M. (1995)
      The work shows the mechanical properties of direct laser-sintered metal parts. The parts were tested after sintering and after an infiltration. Furthermore the accuracy of the parts was measured. Micrographs of the parts ...
    • Accuracy of Stereolithography Parts: Mechanism and Modes of Distortion for a "Letter-H" Diagnostic Part 

      Pang, Thomas H.; Guertin, Michelle D.; Nguyen, Hop D. (1995)
      Rapid Prototyping and Manufacturing (RP&M) users need to compare the accuracy of various commercially available RP&M materials and processes. A good diagnostic test for both material and the fabrication process involves ...
    • AhOJ Ceramics Made by CAM-LEM (Computer-Aided Manufacturing Engineering Materials) Technology 

      Cawley, J.D.; Wei, P.; Liu, Z.E.; Newman, W.S.; Mathewson, B.B.; Heuer, A.H. (1995)
      The concept ofCAM-LEM technology is presented and discussed in the context ofthe fabrication ofAh03 ceramics. Particular attention is paid to the interplay ofgreen tape characteristics and the unit operations involved ...
    • Application of Cementitious Bulk Materials to Site Processed Solid Freeform Construction 

      Pegna, Joseph (1995)
      This paper reports a radical departure from generally accepted concepts in construction automation and demonstrates that new techniques of layered manufacturing can be applied effectively to construction. In the process, ...
    • Application of Stereolithography in the Fabrication of Rehabilitation Aids 

      Jayanthi, Suresh; Harwin, William; Keefe, Michael; Kumar, Vijay (1995)
      Free form fabrication methods have a great potential to significantly improve the design and manufacture of equipment for people with physical disabilities, such as quadriplegia through spinal cord injury, arthrogryposis, ...
    • Automated Fabrication ofCeramic Components from Tape-Cast Ceramic 

      Mathewson, Brian B.; Newman, Wyatt S.; Heuer, Arthur H.; Cawley, James D. (1995)
      This paper describes a machine and process for automated fabrication of functional 3-D laminated engineering components, ceramics in the present example. A laser cuts successive layers of a part derived from a CAD model ...
    • Ceramic Joining by Selective Beam Deposition 

      Tompkins, J.V.; Birmingham, B.R.; Marcus, H.L. (1995)
      Current methods ofjoining of ceramic components may compromise the strength, chemical resistance, or high temperature properties of the resulting ceramic parts. A new method of joining, Ceramic Joining by Selective Beam ...
    • Ceramic Stereolithography for Investment Casting and Biomedical Applications 

      Griffith, Michelle L.; Chu, Tien.Min; Wagner, Warren; Halloran, John W. (1995)
      Ceramic green bodies can be created using stereolithography methods by using an ultraviolet curable suspension of ceramic powders in place of the usual resin -a "ceramic resin". Weare developing ceramic resins from ...
    • Control of Residual Thermal Stresses in Shape Deposition Manufacturing 

      Chin, R.K.; Beuth, J.L; Amon, C.H. (1995)
      Layer-level thermal and mechanical modeling ofthe microcasting stage of ShaPe Deposition Manufacturing is presented. Thermo-mechanical models of carbon steel deposited onto a carbon steel substrate are described. Mechanics ...
    • Densification and Distortion in Selective Laser Sintering of Polycarbonate 

      Berzins, M.; Childs, T.H.C; Dalgarno, K.W.; Ryder, G.R.; Stein, G. (1995)
      The creation of a 3D numerical model for real part accuracy simulations is the goal of this work. An improvement of a first attempt to predict densification, which used a classical moving heat source calculation and a ...
    • Densification Behavior of SLS Processed Al2O3/Al Composite 

      Rao, T. Srinvasa; Bourell, D.L.; Marcus, H.L. (1995)
      Production of structurally sound parts by any rapid prototype technique is essential, because fully functional features are necessary where application testing is required. In the present work, a powder blend of A1203/AI ...
    • Deposition Rates of Silicon Carbide by Selected Area Laser Deposition 

      Lee, Y.L.; Tompkins, J.V.; Sanchez, J.M.; Marcus, H.L. (1995)
      The deposition rates using pure tetramethylsilane (TMS) as precursor are calculated numerically for a ~od .grown by th~ .Selected Area Laser Dep?sition J?rocess. In particular, the dependence of the kinettcs of deposItion ...
    • The Development of a SLS Composite Material 

      Forderhase, Paul; McAlea, Kevin; Booth, Richard (1995)
      The development of a commercial SLS nylon-based composite material (LNC 7000) is described. Nylon composite candidate systems with different volume fractions of a number of glass fiber and glass bead reinforcements were ...
    • Effect of Particle size on SLS and post-processing of Alumina with Polymer binders 

      Subramanian, Kamatchi; Barlow, J.W.; Marcus, H.L. (1995)
      Alumina powders with mean particle size of 15 J.lm, 2 J.lm and 0.5 J.lm were processed by SLS using polymer binders. The 2 J.lffi and 0.5 J.lm powders were given a thermal agglomeration treatment before SLS. The green ...
    • Effect Of Processing Parameters In SLS Of Metal...Polymer Powders 

      Badrinarayan, B.; Barlow, J.W. (1995)
      This paper describes the effect of processing parameters in SLS of metal-polymer powder mixtures. Test bars for measurement of strength and density were made from copper-PMMA powder mixtures using SLS. The effect of ...
    • Electron Beam Solid Freeform Fabrication of Metal Parts 

      Dave, V.R.; Matz, J.E.; Eagar, T.W. (1995)
      A novel method for near-net-shape fabrication of large, complex metal parts without the need for specific tooling is described. Parts are built up in a layer-by-Iayer fashion by feeding raw material in wire form into a ...
    • Emissivity of Powder Beds 

      Sih, Samuel Sumin; Barlow, Joel W. (1995)
      A simple model for estimating the emissivity ofthe surface of a powder bed from knowledge only ofthe bed porosity and solid emissivity is presented. Estimates by this model are compared with experimental measurements for ...
    • The Finishing Of Stereolithography Models Using Resin Based Coatings 

      Reeves, P.E.; Cobb, R.C (1995)
      The use of StereoLithography (SL) can produce accurate prototype models with complex internal and external features. However, a major problem to commercial use is the poor surface finish caused mainly by 'stair stepping' ...