| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Comparison of tensile and compressive behavior of triply periodic minimal surface lattices fabricated by laser powder bed fusion |
| Author(s) |
Bharath Bhushan Ravichander, Shweta Hanmant Jagdale, Akib Jabed, Golden Kumar |
| On-Site Speaker (Planned) |
Bharath Bhushan Ravichander |
| Abstract Scope |
Fabrication of sheet-based triply periodic minimal surface (TPMS) lattices was carried out using laser powder bed fusion, employing 316L stainless steel. The dimensional accuracy and printing defects of various unit cell types (diamond, gyroid, fischer, IWP, and primitive) were assessed using scanning electron microscopy. The tensile and compressive behaviors of TPMS structures were examined, including elastic modulus, yield strength, and energy absorption. Results demonstrated that these properties exhibited similar dependence on the lattice topology for both compression and tension. Notably, the fischer structure displayed superior mechanical performance compared to the previously studied sheet-based diamond TPMS lattice, exhibiting remarkable compressive and tensile properties, which are reported here for the first time in relation to metallic materials. Most sheet-based TPMS structures exhibited high stiffness and plateau stress, indicating deformation dominated by stretching. However, the primitive structure exhibited lower resistance to deformation, likely due to a significant contribution from bending. Understanding the mechanical properties of TPMS lattices will facilitate their selection and utilization in various potential applications. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |