Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures
The aim of this study is to fabricate biodegradable PLA-based composite filaments for 3D printing to manufacture bear-loading lattice structures. First, CaCO<sub>3</sub> and TCP as inorganic fillers were incorporated into a PLA matrix to fabricate a series of composite filaments. The mat...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/5/1062 |
| _version_ | 1797473917162487808 |
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| author | Dongxue Qin Lin Sang Zihui Zhang Shengyuan Lai Yiping Zhao |
| author_facet | Dongxue Qin Lin Sang Zihui Zhang Shengyuan Lai Yiping Zhao |
| author_sort | Dongxue Qin |
| collection | DOAJ |
| description | The aim of this study is to fabricate biodegradable PLA-based composite filaments for 3D printing to manufacture bear-loading lattice structures. First, CaCO<sub>3</sub> and TCP as inorganic fillers were incorporated into a PLA matrix to fabricate a series of composite filaments. The material compositions, mechanical properties, and rheology behavior of the PLA/CaCO<sub>3</sub> and PLA/TCP filaments were evaluated. Then, two lattice structures, cubic and Triply Periodic Minimal Surfaces-Diamond (TPMS-D), were geometrically designed and 3D-printed into fine samples. The axial compression results indicated that the addition of CaCO<sub>3</sub> and TCP effectively enhances the compressive modulus and strength of lattice structures. In particular, the TPMS-D structure showed superior load-carrying capacity and specific energy absorption compared to those of its cubic counterparts. Furthermore, the deformation behavior of these two lattice structures was examined by image recording during compression and computed tomography (CT) scanning of samples after compression. It was observed that pore structure could be well held in TPMS-D, while that in cubic structure was destroyed due to the fracture of vertical struts. Therefore, this paper highlights promising 3D-printed biodegradable lattice structures with excellent energy-absorption capacity and high structural stability. |
| first_indexed | 2024-03-09T20:23:56Z |
| format | Article |
| id | doaj.art-0fe68655ddde4df1ba2914084c48a0e5 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T20:23:56Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0fe68655ddde4df1ba2914084c48a0e52023-11-23T23:40:31ZengMDPI AGPolymers2073-43602022-03-01145106210.3390/polym14051062Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice StructuresDongxue Qin0Lin Sang1Zihui Zhang2Shengyuan Lai3Yiping Zhao4Department of Radiology, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, ChinaSchool of Automotive Engineering, Dalian University of Technology, Dalian 116024, ChinaSchool of Automotive Engineering, Dalian University of Technology, Dalian 116024, ChinaDepartment of Radiology, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, ChinaDepartment of Radiology, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, ChinaThe aim of this study is to fabricate biodegradable PLA-based composite filaments for 3D printing to manufacture bear-loading lattice structures. First, CaCO<sub>3</sub> and TCP as inorganic fillers were incorporated into a PLA matrix to fabricate a series of composite filaments. The material compositions, mechanical properties, and rheology behavior of the PLA/CaCO<sub>3</sub> and PLA/TCP filaments were evaluated. Then, two lattice structures, cubic and Triply Periodic Minimal Surfaces-Diamond (TPMS-D), were geometrically designed and 3D-printed into fine samples. The axial compression results indicated that the addition of CaCO<sub>3</sub> and TCP effectively enhances the compressive modulus and strength of lattice structures. In particular, the TPMS-D structure showed superior load-carrying capacity and specific energy absorption compared to those of its cubic counterparts. Furthermore, the deformation behavior of these two lattice structures was examined by image recording during compression and computed tomography (CT) scanning of samples after compression. It was observed that pore structure could be well held in TPMS-D, while that in cubic structure was destroyed due to the fracture of vertical struts. Therefore, this paper highlights promising 3D-printed biodegradable lattice structures with excellent energy-absorption capacity and high structural stability.https://www.mdpi.com/2073-4360/14/5/1062polylactic acid (PLA)compression propertiestriply periodic minimal surfaces (TPMS)computed tomography (CT) scanning |
| spellingShingle | Dongxue Qin Lin Sang Zihui Zhang Shengyuan Lai Yiping Zhao Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures Polymers polylactic acid (PLA) compression properties triply periodic minimal surfaces (TPMS) computed tomography (CT) scanning |
| title | Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures |
| title_full | Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures |
| title_fullStr | Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures |
| title_full_unstemmed | Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures |
| title_short | Compression Performance and Deformation Behavior of 3D-Printed PLA-Based Lattice Structures |
| title_sort | compression performance and deformation behavior of 3d printed pla based lattice structures |
| topic | polylactic acid (PLA) compression properties triply periodic minimal surfaces (TPMS) computed tomography (CT) scanning |
| url | https://www.mdpi.com/2073-4360/14/5/1062 |
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