About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
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Presentation Title |
A-33: Investigating the Behavior of Ti-5553 Octet Lattice Wedges Under Compression |
Author(s) |
Jenny Wang, David J Macknelly, Stephen Knaus, Kyle D Klein, Mary M LeBlanc, Jeffrey N Florando, Manyalibo J Matthews |
On-Site Speaker (Planned) |
Jenny Wang |
Abstract Scope |
Laser-powder bed fusion (L-PBF) additive manufacturing enables many diverse applications including the design and fabrication of light-weight metallic lattice structures. However, the deformation behavior of metallic lattice structures under complex loading conditions has not been thoroughly investigated, which leads to questions regarding the qualification and certification of printed parts. In this investigation, Ti-5553 octet lattice wedges, processed by L-PBF, are compression tested under an angled load-path using a custom-built fixture that is compatible with Digital Image Correlation (DIC). DIC is used to track the strain field within the lattice during compression. These experiments are used to validate computational models and topology optimization (TO) algorithms that can be applied to improve part performance. The models predict and compare the failure points of non-TO lattice samples against samples that have undergone TO through the Livermore Design Optimization (LiDO) software code. Prepared by LLNL under Contract DE-AC52-07NA27344. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |