Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/85631
Título: | Influence of 3D microstructure pattern and infill density on the mechanical and thermal properties of PET-G filaments |
Autor(es): | Lopes, Lucas Matheus Caldas Vicente Reis, Daniel Costa Paula Junior, Adilson Almeida, Manuela Guedes de |
Palavras-chave: | Additive manufacturing Thermomechanical testing Fusion deposition modelling PET-G filaments |
Data: | 11-Mai-2023 |
Editora: | Multidisciplinary Digital Publishing Institute |
Revista: | Polymers |
Citação: | Lopes, L.; Reis, D.; Paula Junior, A.; Almeida, M. Influence of 3D Microstructure Pattern and Infill Density on the Mechanical and Thermal Properties of PET-G Filaments. Polymers 2023, 15, 2268. https://doi.org/10.3390/polym15102268 |
Resumo(s): | This study aims to evaluate the thermal and mechanical performances of PET-G thermoplastics with different 3D microstructure patterns and infill densities. The production costs were also estimated to identify the most cost-effective solution. A total of 12 infill patterns were analysed, including Gyroid, Grid, Hilbert curve, Line, Rectilinear, Stars, Triangles, 3D Honeycomb, Honeycomb, Concentric, Cubic, and Octagram spiral with a fixed infill density of 25%. Different infill densities ranging from 5% to 20% were also tested to determine the best geometries. Thermal tests were conducted in a hotbox test chamber and mechanical properties were evaluated using a series of three-point bending tests. The study used printing parameters to meet the construction sector’s specific needs, including a larger nozzle diameter and printing speed. The internal microstructures led to variations of up to 70% in thermal performance and up to 300% in mechanical performance. For each geometry, the mechanical and thermal performance was highly correlated with the infill pattern, where higher infill improved thermal and mechanical performances. The economic performance showed that, in most cases, except for the Honeycomb and 3D Honeycomb, there were no significant cost differences between infill geometries. These findings can provide valuable insights for selecting the optimal 3D printing parameters in the construction industry. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/85631 |
DOI: | 10.3390/polym15102268 |
e-ISSN: | 2073-4360 |
Versão da editora: | https://www.mdpi.com/2073-4360/15/10/2268 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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polymers-15-02268.pdf | 5,5 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons