Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
| Autor: | Iurii Vozniak, Nadiya Sova, Dmytro Verbylo, V. A. Beloshenko, Andrei Voznyak, Yan Beygelzimer, Bogdan Savchenko, Vyacheslav Chishko |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
flexible TPU
Materials science Polymers and Plastics Organic chemistry Rigidity (psychology) General Chemistry Bending 3D printing Plasticity mechanical properties Article internal architecture lattice material Thermoplastic polyurethane Lattice (module) QD241-441 Ultimate tensile strength Honeycomb Composite material Gyroid |
| Zdroj: | Polymers Volume 13 Issue 17 Polymers, Vol 13, Iss 2986, p 2986 (2021) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym13172986 |
| Popis: | This study addresses the mechanical behavior of lattice materials based on flexible thermoplastic polyurethane (TPU) with honeycomb and gyroid architecture fabricated by 3D printing. Tensile, compression, and three-point bending tests were chosen as mechanical testing methods. The honeycomb architecture was found to provide higher values of rigidity (by 30%), strength (by 25%), plasticity (by 18%), and energy absorption (by 42%) of the flexible TPU lattice compared to the gyroid architecture. The strain recovery is better in the case of gyroid architecture (residual strain of 46% vs. 31%). TPUs with honeycomb architecture are characterized by anisotropy of mechanical properties in tensile and three-point bending tests. The obtained results are explained by the peculiarities of the lattice structure at meso- and macroscopic level and by the role of the pore space. |
| Databáze: | OpenAIRE |
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