Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures
This study focuses on using helical design patterns via 3D printing to create geopolymer with a highly porous structure in order to enhance their strength-density relationship and fracture properties. In this regard, to create porous structure, different pitch angles and infill densities were chosen...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2024-12-01
|
| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2024.2425824 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846167384856985600 |
|---|---|
| author | Ali Rezaei Lori Mehdi Mehrali |
| author_facet | Ali Rezaei Lori Mehdi Mehrali |
| author_sort | Ali Rezaei Lori |
| collection | DOAJ |
| description | This study focuses on using helical design patterns via 3D printing to create geopolymer with a highly porous structure in order to enhance their strength-density relationship and fracture properties. In this regard, to create porous structure, different pitch angles and infill densities were chosen, and mechanical and fracture properties were examined. The results of mechanical strength tests revealed that while the pitch angle does not significantly affect compressive strength, flexural strength is improved by implementing a low pitch angle helical structure, which leads to the strength-density relationship improvement. Additionally, the work of fracture results demonstrated an enhancement for samples with low pitch angles, such as α15° and α30°, compared to cast and non-directional printed samples. The digital image correlation and fracture surface analysis showed several fracture mechanisms, predominantly crack deflection and twisting, in samples with low pitch angles, which contributes to the observed improvements in the work of fracture. |
| format | Article |
| id | doaj-art-2dce9774bc7c4130a9da7e5115977af3 |
| institution | Kabale University |
| issn | 1745-2759 1745-2767 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj-art-2dce9774bc7c4130a9da7e5115977af32024-11-14T18:58:55ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672024-12-0119110.1080/17452759.2024.2425824Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structuresAli Rezaei Lori0Mehdi Mehrali1Department of Civil and Mechanical Engineering, Technical University of Denmark, Kgs Lyngby, DenmarkDepartment of Civil and Mechanical Engineering, Technical University of Denmark, Kgs Lyngby, DenmarkThis study focuses on using helical design patterns via 3D printing to create geopolymer with a highly porous structure in order to enhance their strength-density relationship and fracture properties. In this regard, to create porous structure, different pitch angles and infill densities were chosen, and mechanical and fracture properties were examined. The results of mechanical strength tests revealed that while the pitch angle does not significantly affect compressive strength, flexural strength is improved by implementing a low pitch angle helical structure, which leads to the strength-density relationship improvement. Additionally, the work of fracture results demonstrated an enhancement for samples with low pitch angles, such as α15° and α30°, compared to cast and non-directional printed samples. The digital image correlation and fracture surface analysis showed several fracture mechanisms, predominantly crack deflection and twisting, in samples with low pitch angles, which contributes to the observed improvements in the work of fracture.https://www.tandfonline.com/doi/10.1080/17452759.2024.24258243D Printingporous geopolymermechanical propertiesfracturebioinspired design |
| spellingShingle | Ali Rezaei Lori Mehdi Mehrali Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures Virtual and Physical Prototyping 3D Printing porous geopolymer mechanical properties fracture bioinspired design |
| title | Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures |
| title_full | Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures |
| title_fullStr | Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures |
| title_full_unstemmed | Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures |
| title_short | Mechanical properties and crack deflection mechanisms in 3D-Printed porous geopolymers with cellular structures |
| title_sort | mechanical properties and crack deflection mechanisms in 3d printed porous geopolymers with cellular structures |
| topic | 3D Printing porous geopolymer mechanical properties fracture bioinspired design |
| url | https://www.tandfonline.com/doi/10.1080/17452759.2024.2425824 |
| work_keys_str_mv | AT alirezaeilori mechanicalpropertiesandcrackdeflectionmechanismsin3dprintedporousgeopolymerswithcellularstructures AT mehdimehrali mechanicalpropertiesandcrackdeflectionmechanismsin3dprintedporousgeopolymerswithcellularstructures |