Abstract
Additive manufacturing technologies are promising but still not widely used. One major problem is the unsatisfying quality e.g. surface roughness and dimensional accuracy. The discontinuous droplets and distortions in single track formations, which influence both surface roughness and dimensional accuracy, were investigated. The physical mechanisms of the formations of the droplets and distortions were proposed and the heat transfer simulations based on the Finite Element Method were established to predict the possibility of the droplet formation and the magnitude of the distortion. Experiments using Electron Beam Melting were then conducted to validate the physical and numerical models. The good agreements of the simulated and experimental results demonstrated that the proposed models are simple and efficient to provide quantitative predictions of the distortions.
| Original language | English (US) |
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| Pages | 464-472 |
| Number of pages | 9 |
| State | Published - 2020 |
| Event | 26th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2015 - Austin, United States Duration: Aug 10 2015 → Aug 12 2015 |
Conference
| Conference | 26th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2015 |
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| Country/Territory | United States |
| City | Austin |
| Period | 8/10/15 → 8/12/15 |
Funding
The first author is currently a visiting Ph.D. student at the Department of Mechanical Engineering, Northwestern University, and he would like to thank China Scholarship Council (CSC) for the financial support. This research work was performed under the financial assistance award 70NANB13Hl94 from National Institute of Standards and Technology, and 70NANB14H012 from U.S. Department of Commerce, National Institute of Standards and Technology as part of the Center for Hierarchical Materials Design (CHiMaD).
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Surfaces and Interfaces
