Browsing by Subject "binder jetting process"

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    Fabrication and Characterization of Graphite/Nylon 12 Composite via Binder Jetting Additive Manufacturing Process
    (University of Texas at Austin, 2017) Miyanaji, Hadi; Akbar, Junaid Muhammad; Yang, Li
    Nowadays, graphite is used in many applications due to its unique combination of physical properties. Fabrication of graphite parts has been mostly restricted to traditional manufacturing processes (e.g. moldering), and limited works have been devoted to the feasibility of additive manufacturing (AM) technology to produce graphite components. In the present study, the feasibility of binder jetting additive manufacturing (BJ-AM) process in fabrication of graphite/nylon composites is investigated. The printability of the composite parts with varying graphite amount was experimentally examined through the adjustment of in-process parameters (e.g. saturation level and drying energy) and post-processing curing (e.g. curing time and temperature). The efficiency of nylon as the liquid phase sintering agent was studied via the mechanical property evaluation of the composites. In addition, the electrical properties of the graphite/nylon composites were investigated in order to evaluate the effectiveness of the manufacturing method for graphite-based structures for potential functional applications.
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    Optimal Process Parameters for 3D Printing of Dental Porcelain Structures
    (University of Texas at Austin, 2015) Miyanaji, Hadi; Zhang, Shanshan; Lassell, Austin; Zandinejad, Amir Ali; Yang, Li
    Dental porcelain material is a typical glass ceramic material that is widely used in dental restoration applications. However, there still exists limited knowledge about the fabrication of this type of materials using binder jetting additive manufacturing process. There are several important factors such as saturation level, power level, drying time as well as spread speed, which would potentially affect the accuracy and strength of the printed parts before and after sintering. Therefore, in this research an extensive experimental study was performed to obtain the optimal process parameters for the dental porcelain materials fabricated via ExOne binder jetting system. The results also provide general printing guidelines for the fabrication of glass ceramic materials.