Design and mechanical testing of porous lattice structure with independent adjustment of pore size and porosity for bone implant
Junfang Zhang,Yifan Shen,Yuanxi Sun,Jiaxin Yang,Yu-Hui Gong,Ke Wang,Zhiqing Zhang,Xiaohong Chen,Long Bai +8 more
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TLDR
By adjusting the sheet thickness of the triply periodic minimal surface (TPMS) lattice structure and adjusting the height of the single row structure according to linear and constant laws, the TPMS lattice structures with given porosity and adjustable pore size are designed, and the mechanical response is investigated as discussed by the authors .Abstract:
Porosity is considered to be one of the key factors affecting the structural properties of porous lattices, but in fact, pore size also plays an important role, and it has great potential to adjust pore size and porosity independently to improve structural properties. In this work, by adjusting the sheet thickness of the triply periodic minimal surface (TPMS) lattice structures and adjusting the height of the single row structure according to linear and constant laws, the TPMS lattice structures with given porosity and adjustable pore size are designed, and the mechanical response is investigated. Based on preparing samples by Ti6Al4V laser powder bed fusion, the results of the tests show that the elastic modulus ranges of linear change TPMS (LC-TPMS) and constant TPMS (C-TPMS) lattice structures are 3625.6 MPa–4575.1 MPa and 3820.0 MPa–4509.1 MPa, respectively. In the plateau stage, the LC-TPMS lattice structures have a longer and more stable plateau stage, higher yield stress and better energy absorption capacity than the C-TPMS lattice structures. The maximum energy absorption difference is 62.7 MJ/mm 3 and the maximum energy absorption efficiency difference is 0.12. The LC-TPMS lattice structures can also obtain a larger damping ratio under larger compressive strain. read more
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Polymeric composites of cubic-octahedron and gyroid lattice for biomimetic dental implants
Bankole I. Oladapo,Joseph F. Kayode,Panagiotis Karagiannidis,Nida Naveed,Hamid Ahmad Mehrabi,Kolawole O. Ogundipe +5 more
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Energy absorption capability of graded and non-graded sheet-based gyroid structures fabricated by microcast processing
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Design and mechanical evaluation of additively-manufactured graded TPMS lattices with biodegradable polymer composites
Yaxin Cao,Sheng-min Lai,Wen Jie Wu,Lingling Sang,Yuxin Lin,Tang Liu,Chang Liang,Wei Li,Yiping Zhao +8 more
TL;DR: In this article , two kinds of TPMS structures including Schwarz P (P) and Gyroid (G) with uniform and different graded-thickness were designed and proposed in the current work.
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TPMS Metamaterial Structures Based on Shape Memory Polymers: Mechanical, Thermal and Thermomechanical Assessment
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References
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