Functionally graded porous scaffolds in multiple patterns: New design method, physical and mechanical properties
TLDR
In this article, the authors focused on the graded change requirements of bio-porous scaffolds in terms of physical and mechanical properties, and proposed three patterns (density, heterostructure and cell-size gradients) with Gyroid and Diamond unit cells, and fabricated by Selective Laser Melting (SLM) using Ti-6Al-4V.About:
This article is published in Materials & Design.The article was published on 2018-12-15 and is currently open access. It has received 183 citations till now. The article focuses on the topics: Gyroid & Elastic modulus.read more
Citations
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Multifunctional Mechanical Metamaterials Based on Triply Periodic Minimal Surface Lattices
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Additive manufacturing of functionally graded materials: A review
Chi Zhang,Fei Chen,Zhifeng Huang,Jia Mingyong,Guiyi Chen,Yongqiang Ye,Yaojun Lin,Wei Liu,Bingqing Chen,Qiang Shen,Lianmeng Zhang,Enrique J. Lavernia +11 more
TL;DR: A review of the state-of-the-art in FGM can be found in this paper, where the authors present their current understanding of important issues, such as modeling, processing, microstructures and mechanical properties.
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A review of topology optimization for additive manufacturing: Status and challenges
TL;DR: It is shown that in the research of topology optimization for additive manufacturing, the integration of material, structure, process and performance is important to pursue high-performance, multi-functional and lightweight production.
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Functionally graded and multi-morphology sheet TPMS lattices: Design, manufacturing, and mechanical properties.
TL;DR: Relative density grading, cell size grading, and multi-morphology (lattice type grading) are mechanically investigated for sheet-based lattices with topologies based on triply periodic minimal surfaces, and FE analysis revealed that sheet-networks multi- morphology lattices exhibit higher elastic properties as compared to solid-network multi- Morphology lattice.
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Compression–compression fatigue behaviour of gyroid-type triply periodic minimal surface porous structures fabricated by selective laser melting
Lei Yang,Lei Yang,Chunze Yan,Wenchao Cao,Liu Zhufeng,Bo Song,Shifeng Wen,Cong Zhang,Yusheng Shi,Shoufeng Yang,Shoufeng Yang +10 more
TL;DR: In this article, the authors studied the compression-compression fatigue behavior and the underlying fatigue mechanism of Gyroid cellular structures (GCS), a typical TPMS porous structure, and found that the fatigue ratio of GCS reaches 0.35 for as-built samples and can be raised to 0.45 after sandblasting treatment.
References
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Optimal design and fabrication of scaffolds to mimic tissue properties and satisfy biological constraints.
TL;DR: An image-based homogenization optimization approach is demonstrated that can design scaffold microstructure, scaffold material and regenerate tissueMicrostructure to meet conflicting design requirements and ensure adequate cell/gene delivery can be introduced using a minimum porosity threshold.
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Cellular Ti-6Al-4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting.
TL;DR: Micro computer tomography analysis demonstrated the capability to fabricate three-dimensional structures with an interconnected porosity and pore sizes suitable for tissue ingrowth and vascularization and a chemical surface modification is expected to enhance the fixation of the implant in the surrounding bone as well as to improve its long-term stability.
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Effect of pore size on bone ingrowth into porous titanium implants fabricated by additive manufacturing: An in vivo experiment.
Naoya Taniguchi,Shunsuke Fujibayashi,Mitsuru Takemoto,Kiyoyuki Sasaki,Bungo Otsuki,Takashi Nakamura,Tomiharu Matsushita,Tadashi Kokubo,Shuichi Matsuda +8 more
TL;DR: The results indicate that the pore structure of the P600 implant is a suitable porous structure for orthopedic implants manufactured by SLM.
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Evaluations of cellular lattice structures manufactured using selective laser melting
TL;DR: In this article, the effect of unit cell size on the manufacturability, density and compression properties of the manufactured cellular lattice structures were investigated, and it was shown that the lattice structure made by selective laser melting has a good geometric agreement with the original computer-aided design (CAD) models, but many partially melted metal particles are bonded to strut surfaces.
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Advanced lightweight 316L stainless steel cellular lattice structures fabricated via selective laser melting
TL;DR: In this paper, a unique cell type called gyroid is designed to construct periodic lattice structures and utilize its curved cell surface as a self-supported feature which avoids the building of support structures and reduces material waste and production time.