About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Design of Hybrid TPMS Lattices for Controlled Failure and Energy Absorption |
Author(s) |
Naheen Ibn Akbar, Kalyan Nandigama, Bharath Bhushan Ravichander, Golden Kumar |
On-Site Speaker (Planned) |
Naheen Ibn Akbar |
Abstract Scope |
Additive manufacturing (AM), particularly laser powder bed fusion (LPBF), is a technology that enables the production of geometrically complex structural components. Among others, lattice structures are a key example, offering lightweight architectures with enhanced mechanical properties. Triply periodic minimal surface (TPMS) lattices with their tailored porosity and tunable mechanical response are of significant interest for aerospace, automotive, and biomedical applications. In this study, stainless steel 316L (SS316L), known for its excellent corrosion resistance and elevated-temperature performance, was used to fabricate TPMS lattices. This work introduces novel hybrid TPMS structures by combining different unit cell geometries and orientations within a single part. Hybrid lattices were designed to promote controlled failure at specific locations. Quasi-static compression tests were conducted to investigate their deformation behavior and energy absorption characteristics. The hybrid structures demonstrated superior mechanical performance, achieving higher yield strength and improved failure resistance compared to conventional single-type lattices. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |