Feasibility Study on 3-D Printing of Metallic Structural Materials with Robotized Laser-Based Metal Additive Manufacturing
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Metallic structural materials continue to open new avenues in achieving exotic mechanical properties that are naturally unavailable. They hold great potential in developing novel products in diverse industries such as the automotive, aerospace, biomedical, oil and gas, and defense. Currently, the use of metallic structural materials in industry is still limited because of difficulties in their manufacturing. This article studied the feasibility of printing metallic structural materials with robotized laser-based metal additive manufacturing (RLMAM). In this study, two metallic structural materials characterized by an enlarged positive Poisson’s ratio and a negative Poisson’s ratio were designed and simulated, respectively. An RLMAM system developed at the Research Center for Advanced Manufacturing of Southern Methodist University was used to print them. The results of the tensile tests indicated that the printed samples successfully achieved the corresponding mechanical properties.
KeywordsTensile Test Additive Manufacturing Molten Pool Selective Laser Sinter Metallic Structural Material
Special thanks goes to Mr. Andrew Socha, a research engineer at the Research Center for Advanced Manufacturing at SMU, for his assistance in this research. The financial support of the U.S. National Science Foundation, under Grant IIP-1034652, is acknowledged.
Supplementary material 1 (MP4 11243 kb)
Supplementary material 2 (AVI 18631 kb)
- 2.Q. Liu, Literature Review: Materials with Negative Poisson’s Ratios and Potential Applications to Aerospace and Defence (Air Vehicles Division, Defence Science Technology Organisation, Victoria, 2006).Google Scholar
- 15.R. Kovacevic and M.E. Valant, U.S. Patent 7,020,539 (2006).Google Scholar
- 16.R. Kovacevic, D. Hu, and M.E. Valant, U.S. Patent 6,995,334 (2006).Google Scholar
- 17.“Atlas Specialty Metals” http://www.atlassteels.com.au/documents/Atlas431.pdf. Accessed 11 April 2016.
- 20.R. Kovacevic and M.E. Valant, U.S. Patent 7,045,738 (2006).Google Scholar