Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior
This paper investigates the effect of processing parameters on the dimensional accuracy and mechanical properties of cellular lattice structures fabricated by additive manufacturing, also known as 3D printing. The samples are fabricated by selective laser melting (SLM) using novel titanium-tantalum...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/82546 http://hdl.handle.net/10220/50405 |
| _version_ | 1826121596853551104 |
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| author | Sing, Swee Leong Wiria, Florencia Edith Yeong, Wai Yee |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Sing, Swee Leong Wiria, Florencia Edith Yeong, Wai Yee |
| author_sort | Sing, Swee Leong |
| collection | NTU |
| description | This paper investigates the effect of processing parameters on the dimensional accuracy and mechanical properties of cellular lattice structures fabricated by additive manufacturing, also known as 3D printing. The samples are fabricated by selective laser melting (SLM) using novel titanium-tantalum alloy. The titanium-tantalum alloy has the potential to replace commercially pure titanium and Ti6Al4V as biomedical material. In this study, the unit cell used is specially designed to carry out the analysis using regression method and analysis of variance (ANOVA). Due to the effect of the SLM process parameters, the elastic constant of the cellular lattice structures ranged from 1.36 ± 0.11 to 6.82 ± 0.15 GPa using the same unit cell design. The elastic constant range, while showing the versatility of titanium-tantalum as biomedical material, is rather wide despite using the same lattice structure designed. This shows that there is a need to carefully control the processing parameters during the lattice structures fabrication so as to obtain the desired mechanical properties. Based on the statistical analysis, it is found that the dimensional accuracy and mechanical properties such as elastic constant and yield strength of the cellular lattice structures are most sensitive to laser power as compared to other parameters such as laser scanning speed and powder layer thickness. |
| first_indexed | 2024-10-01T05:35:06Z |
| format | Journal Article |
| id | ntu-10356/82546 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:35:06Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/825462022-01-08T20:11:39Z Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior Sing, Swee Leong Wiria, Florencia Edith Yeong, Wai Yee School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Singapore Institute of Manufacturing Technology SIMTech-NTU Joint Laboratory (3D Additive Manufacturing) Engineering::Mechanical engineering Additive Manufacturing 3D Printing This paper investigates the effect of processing parameters on the dimensional accuracy and mechanical properties of cellular lattice structures fabricated by additive manufacturing, also known as 3D printing. The samples are fabricated by selective laser melting (SLM) using novel titanium-tantalum alloy. The titanium-tantalum alloy has the potential to replace commercially pure titanium and Ti6Al4V as biomedical material. In this study, the unit cell used is specially designed to carry out the analysis using regression method and analysis of variance (ANOVA). Due to the effect of the SLM process parameters, the elastic constant of the cellular lattice structures ranged from 1.36 ± 0.11 to 6.82 ± 0.15 GPa using the same unit cell design. The elastic constant range, while showing the versatility of titanium-tantalum as biomedical material, is rather wide despite using the same lattice structure designed. This shows that there is a need to carefully control the processing parameters during the lattice structures fabrication so as to obtain the desired mechanical properties. Based on the statistical analysis, it is found that the dimensional accuracy and mechanical properties such as elastic constant and yield strength of the cellular lattice structures are most sensitive to laser power as compared to other parameters such as laser scanning speed and powder layer thickness. Accepted version 2019-11-13T07:49:42Z 2019-12-06T14:57:42Z 2019-11-13T07:49:42Z 2019-12-06T14:57:42Z 2017 Journal Article Sing, S. L., Wiria, F. E. & Yeong, W. Y. (2017). Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior. Robotics and Computer-Integrated Manufacturing, 49, 170-180. https://dx.doi.org/10.1016/j.rcim.2017.06.006 0736-5845 https://hdl.handle.net/10356/82546 http://hdl.handle.net/10220/50405 10.1016/j.rcim.2017.06.006 49 170 180 en Robotics and Computer-Integrated Manufacturing Robotics and Computer-Integrated Manufacturing © 2017 Elsevier Ltd. All rights reserved. This paper was published in Robotics and Computer-Integrated Manufacturing and is made available with permission of Elsevier Ltd. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Additive Manufacturing 3D Printing Sing, Swee Leong Wiria, Florencia Edith Yeong, Wai Yee Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior |
| title | Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior |
| title_full | Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior |
| title_fullStr | Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior |
| title_full_unstemmed | Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior |
| title_short | Selective laser melting of lattice structures : a statistical approach to manufacturability and mechanical behavior |
| title_sort | selective laser melting of lattice structures a statistical approach to manufacturability and mechanical behavior |
| topic | Engineering::Mechanical engineering Additive Manufacturing 3D Printing |
| url | https://hdl.handle.net/10356/82546 http://hdl.handle.net/10220/50405 |
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