Browsing 2017 International Solid Freeform Fabrication Symposium by Issue Date

Now showing items 1-20 of 221

    • Rational Decision-Making for the Beneficial Application of Additive Manufacturing 

      Deppe, Gereon; Kaesberg, Martin; Koch, Rainer (University of Texas at Austin, 2017)
      Additive Manufacturing is a technology that offers a high potential for industrial companies. Nevertheless, companies lack experience with this new technology and face the problem to identify processes where a successful ...

    • A Floor Power Module for Cooperative 3D Printing 

      Currence, Jacob; Morales-Ortega, Rolando; Steck, Jason; Zhou, Wenchao (University of Texas at Austin, 2017)
      Cooperative 3D printing is an emerging technology that utilizes multiple printhead-carrying mobile robots to work simultaneously to 3D print or assemble products on a factory floor, which can provide the scalability, ...

    • Active - Z Printing: A New Approach to Increasing 3D Printed Part Strength 

      Khurana, Jivtesh B.; Dinda, Shantanab; Simpson, Timothy W. (University of Texas at Austin, 2017)
      Research suggests that topology and build parameters in Fused Filament Fabrication (FFF) play a vital role in determining mechanical properties of parts produced by this technique. In particular, the use of 2D layers ...

    • Hypervelocity Impact of Additively Manufactured A356/316L Interpenetrating Phase Composites 

      French, M.R.; Yarberry, W.A. III; Pawlowski, A.E.; Shyam, A.; Splitter, D.A.; Elliott, A.M.; Carver, J.K.; Cordero, Z.C. (University of Texas at Austin, 2017)
      We have examined the hypervelocity impact response of targets made from monolithic A356 and 316L stainless steel, as well as an additively manufactured A356/316L interpenetrating phase composite. 1.9 mm diameter spherical ...

    • 5-Axis Slicing Methods for Additive Manufacturing Process 

      Kapil, Sajan; Negi, Seema; Joshi, Prathamesh; Sonwane, Jitendra; Sharma, Arun; Bhagchandani, Ranjeet; Karunakaran, K.P. (University of Texas at Austin, 2017)
      In metallic Additive Manufacturing (AM) processes such as Hybrid Layered Manufacturing (HLM), it is difficult to remove the support material used for realizing the overhanging/undercut features. Multi-axis kinematics can ...

    • A Hybrid Method for Additive Manufacturing of Silicone Structures 

      Liravi, Farzad; Jacob-John, Varun; Toyserkani, Ali; Vlasea, Mihaela (University of Texas at Austin, 2017)
      Developing an additive manufacturing (AM) technique for fabrication of complex-shaped silicone structures is a challenging task due to difficulties in layer-wise dispensing and stacking of such non-Newtonian viscous ...

    • Multi-Material Structural Topology Optimization Under Uncertainty via a Stochastic Reduced Order Model Approach 

      Aguiló, M.A.; Warner, J.E. (University of Texas at Austin, 2017)
      This work presents a stochastic reduced order modeling approach for the solution of uncertainty aware, multi-material, structural topology optimization problems. Uncertainty aware structural topology optimization problems ...

    • Multiscale Analysis of Cellular Solids Fabricated by EBM 

      Arrieta, Edel; Mireles, Jorge; Stewart, Calvin; Carrasco, Cesar; Wicker, Ryan B. (University of Texas at Austin, 2017)
      Additive Manufacturing technologies such as Electron Beam Melting are empowering individuals to develop novelty materials by introducing hierarchical levels into solids. Features from the introduced architectures and the ...

    • Effect of Process Parameters and Shot Peening on the Tensile Strength and Deflection of Polymer Parts Made Using Mask Image Projection Stereolithography (MIP-SLA) 

      Madireddy, G.; Montazeri, M.; Curtis, E.; Berger, J.; Underwood, N.; Khayari, Y.; Marth, B.; Smith, B.; Christy, S.; Krueger, K.; Sealy, M.P.; Rao, P. (University of Texas at Austin, 2017)
      Mask Image Projection Stereolithography (MIP-SLA) is an additive manufacturing technique in which a liquid photopolymer resin is hardened from exposure to ultraviolet (UV) light. Shot peening is a surface treatment to ...

    • Reducing Mechanical Anisotropy in Extrusion-Based Printed Parts 

      Duty, Chad; Failla, Jordan; Kim, Seokpum; Lindahl, John; Post, Brian; Love, Lonnie; Kunc, Vlastimil (University of Texas at Austin, 2017)
      The mechanical performance of 3D printed components is highly dependent upon the orientation of the part relative to the build plane. Specifically for extrusion-based printing systems, the bond between successive layers ...

    • Magnetohydrodynamic Drop-on-Demand Liquid Metal 3D Printing 

      Sukhotskiy, V.; Karampelas, I.H.; Garg, G.; Verma, A.; Tong, M.; Vader, S.; Vader, Z.; Furlani, E.P. (University of Texas at Austin, 2017)
      We present a novel method for liquid metal drop-on-demand (DOD) additive manufacturing of three-dimensional (3D) solid metal structures. This method relies on magnetohydrodynamic (MHD)-based droplet generation. Specifically, ...

    • Topology Optimization of an Additively Manufactured Beam 

      Torries, Brian; DorMohammadi, Saber; Abdi, Frank; Thompson, Scott; Shamsaei, Nima (University of Texas at Austin, 2017)
      This study investigates the application of topological optimization in conjunction with additive manufacturing (AM) process simulation for fabricating parts that meet strict quality and performance requirements while ...

    • Investigation of Build Strategies for a Hybrid Manufacturing Process Progress on Ti-6Al-4V 

      Yan, Lei; Hill, Leon; Newkirk, Joseph W.; Liou, Frank (University of Texas at Austin, 2017)
      The various processing parameters of a hybrid manufacturing process, including deposition and machining, is being investigated with a Design of Experiment (DoE). The intent was to explore the effect of different build ...

    • Selective Separation Shaping of Polymeric Parts 

      Nouri, H.; Khoshnevis, B. (University of Texas at Austin, 2017)
      Additive manufacturing (AM), or 3D printing has enjoyed a recent surge of attention over the past decade. AM is a process in which digital 3D design data is used as input to build physical objects by combining sequence ...

    • Increasing Process Speed in the Laser Melting Process of Ti6Al4V and the Reduction of Pores During Hot Isostatic Pressing 

      Ahlers, D.; Koppa, P.; Hengsbach, F.; Gloetter, P.; Altmann, A.; Schaper, M.; Tröster, T. (University of Texas at Austin, 2017)
      Additive manufacturing of titanium alloys has gained intensive attraction from industry and academia. Moreover, for additively fabricated parts consisting of Ti6Al4V, hot isostatic pressing (HIP), is widely used as a ...

    • Fracture Mechanism Analysis of Schoen Gyroid Cellular Structures Manufactured by Selective Laser Melting 

      Yang, Lei; Yan, Chunze; Shi, Yusheng (University of Texas at Austin, 2017)
      Ti-6Al-4V triply periodic minimal surface (TPMS) structures with biomorphics scaffold designs are expected to be the most promising candidates for many biological applications such as bone implants. Fracture is the main ...

    • Rapid Prototyping of EPS Pattern for Complicated Casting 

      Kumar, Ranjeet; Kapil, Sajan; Negi, Seema; Gehlot, Nihal; Gopalakrishna, Suhas Hurli; Karunakaran, K.P. (University of Texas at Austin, 2017)
      In Rapid Prototyping (RP) process the 3D object is approximated into several 2D slices. All these slices are of a uniform thickness hence called uniform slicing of zeroth order approximation. Such a system always suffers ...

    • Casting - Forging - Milling Composite Additive Manufacturing Thechnology 

      Zhang, Haiou; Li, Runsheng; Wang, Rui; Fu, Youheng; Wang, Xiangping; Wang, Guilan; Tang, Shangyong (University of Texas at Austin, 2017)
      The current metal additive manufacturing has some drawbacks, such as poor performance in producing forgings, low accuracy and efficiency, and high cost. This paper proposes a new technology called casting-forging-milling ...

    • Topology Optimization for 3D Material Distribution and Orientation in Additive Manufacturing 

      Jiang, D.; Smith, D.E. (University of Texas at Austin, 2017)
      Products produced with Additive Manufacturing (AM) methods often have anisotropic microstructure that forms as material layers are added during processing. Unfortunately, current AM design methods do not accommodate the ...

    • Development of an Experimental Test Setup for In Situ Strain Evaluation During Selective Laser Melting 

      Uhlmann, Eckart; Krohmer, Erwin; Hohlstein, Felix; Reimers, Walter (University of Texas at Austin, 2017)
      Selective Laser Melting (SLM) is an Additive Manufacturing (AM) process which still underlies a lack of profound process understanding. This becomes obvious when deformation and crack formation can be observed in SLM ...