![]() To obtain a greater understanding of the process, a multi-scale multi-physics modeling framework, spanning from atomic, particle, to component levels, is developed. The growth of reliable methods to improve the component quality created from additive manufacturing technologies greatly depends on the quantitative understanding of the 3D printing process. Multi-Scale Multi-Physics Models for Metal Based Additive Manufacturing Processĭistortion and cracking are primary failures in metal components fabricated by additive manufacturing process. (4) Hye-Yeong Park, Eun-Hee Kim, Hyun-Hee Choi, Geun-Ho Cho, Yeon-Gil Jung, Jing Zhang, New conversion process for fabricating a ceramic core by a 3D printing technique, Surface and Coatings Technology, Vol.332, pp 527-532 (2017)Ĥ. (3) Hyun-Hee Choi, Eun-Hee Kim, Hye-Yeong Park, Geun-Ho Cho, Yeon-Gil Jung, Jing Zhang, Application of dual coating process and 3D printing technology in sand mold fabrication, Surface and Coatings Technology, Vol. (2)ĝulus Owen, James Hickey, Alexander Cusson, Oyedotun Isaac Ayeni, Jeremiah Rhoades, Yifan Deng, Yi Zhang, Linmin Wu, Nishant Hawaldar, Piyush Pai Raikar, Hyeon-Myeong Park, Yeon-Gil Jung, Jing Zhang, 3D Printing of Ceramic Components Using a Customized 3D Ceramic Printer, Progress in Additive Manufacturing, (DOI: 10.1007/s4096-3) (2018) (1) Nishant Hawaldar, Jing Zhang, Additive Manufacturing of Molds for Sand Casting (poster), 2017 IUPUI Research Day Award The results of this study indicate significant advantages in employing rapid prototyping technology in the production of mold. Using fabrication of pump bowl as a case study, the two processes are compared in terms of weight saving, surface finish, design allowance, and fettling work. In this study, two mold casting processes, traditional sand casting process and sand 3D printing process, are systematically compared. Additive Manufacturing of Mold for Sand CastingĪdditive manufacturing enables efficiently producing molds for sand casting. Lee, (2016) Characterization of Microstructure and Mechanical Properties of Direct Metal Laser Sintered 15-5 Ph1 Stainless Steel Powders and Components, in TMS 2016: 145 Annual Meeting & Exhibition: Supplemental Proceedings (ed TMS), John Wiley & Sons, Inc., Hoboken, NJ, USA. (2) Jing Zhang, Yi Zhang, Xingye Guo, Weng-Hoh Lee, Bin Hu, Zhe Lu, Yeon-Gil Jung, H. ![]() (1) Jing Zhang, Bin Hu, Yi Zhang, Xingye Guo, Linmin Wu, Hye-Yeong Park, Je-Hyun Lee, Yeon-Gil Jung, Comparison of Virgin and Reused 15-5 PH Stainless Steel Powders for Laser Powder Bed Fusion Process, Progress in Additive Manufacturing,(DOI: 10.1007/s4096-2) (2018) These findings are important as standards are being developed to specify and control the feed material, process and manufactured AM components. ![]() The technology will include: (1) quantification of powder chemical composition and morphology for fresh and recycled for multiple build specimens (2) examining the mechanical and physical properties of the printed components compared as a function of the number of times the powders are reused/recycled (3) evaluation of components using new non-destructive testing methods, e.g., micro-CT. In this study, a new technology will be developed focusing on combining fresh powders and recycled metallic AM powders (Co, Ni, Fe, Ti based), a group of metals important to energy production, aerospace, and medical industries, to economically fabricate AM components. It is important to develop new technologies to assist AM industry to quantitatively determine how to reuse the powders. The AM powders are expensive and poorly utilized in a typical build with only 5 to 20% of the powder volume fused into useful parts. In order to obtain the material savings associated with utilizing the powder bed process for additive manufacturing (AM), it is critical to understand and optimize the number of times powders can be reused before desired material and mechanical properties are compromised. ![]()
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