Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure
This study addressed the problem of poor structural toughness of material extrusion-based (MEX) 3D printing polylactic acid (PLA) models and expanded the application of 3D printing technology. A new structural toughness enhancement method was proposed to improve the structural toughness of MEX 3D-pr...
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North Carolina State University
2025-08-01
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| Series: | BioResources |
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| Online Access: | https://ojs.bioresources.com/index.php/BRJ/article/view/24952 |
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| author | Chen Wang Han-yi Huang Xiaowen Wang |
| author_facet | Chen Wang Han-yi Huang Xiaowen Wang |
| author_sort | Chen Wang |
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| description | This study addressed the problem of poor structural toughness of material extrusion-based (MEX) 3D printing polylactic acid (PLA) models and expanded the application of 3D printing technology. A new structural toughness enhancement method was proposed to improve the structural toughness of MEX 3D-printed models by constructing a rigid shell-flexible infill composite structure. Rectangular specimens were designed using SolidWorks software, and the structural toughness of the rigid specimens and rigid shell-flexible infill specimens were tested using three-point bending test and Charpy impact test. The deflection, bending strain energy, and impact strength of the rigid shell-flexible infill specimens were larger than those of the rigid specimens. The enhancement percentages were 103%, 306% and 293%, respectively, indicating that the rigid shell-flexible infill specimens had better structural toughness. In contrast to the conventional material modification methods, the structural toughness enhancement method proposed in this study can maintain the strength and stiffness of 3D-printed models while improving their impact resistance and ductility. The products have unique application value in the fields of smart packaging, sports protective gears, and consumer electronic products. |
| format | Article |
| id | doaj-art-ac5b9d200ca449478d7ee3cc416039b6 |
| institution | Kabale University |
| issn | 1930-2126 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | North Carolina State University |
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| series | BioResources |
| spelling | doaj-art-ac5b9d200ca449478d7ee3cc416039b62025-08-20T17:36:15ZengNorth Carolina State UniversityBioResources1930-21262025-08-01204894989563316Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite StructureChen Wang0Han-yi Huang1Xiaowen Wang2College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu, China College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, ChinaThis study addressed the problem of poor structural toughness of material extrusion-based (MEX) 3D printing polylactic acid (PLA) models and expanded the application of 3D printing technology. A new structural toughness enhancement method was proposed to improve the structural toughness of MEX 3D-printed models by constructing a rigid shell-flexible infill composite structure. Rectangular specimens were designed using SolidWorks software, and the structural toughness of the rigid specimens and rigid shell-flexible infill specimens were tested using three-point bending test and Charpy impact test. The deflection, bending strain energy, and impact strength of the rigid shell-flexible infill specimens were larger than those of the rigid specimens. The enhancement percentages were 103%, 306% and 293%, respectively, indicating that the rigid shell-flexible infill specimens had better structural toughness. In contrast to the conventional material modification methods, the structural toughness enhancement method proposed in this study can maintain the strength and stiffness of 3D-printed models while improving their impact resistance and ductility. The products have unique application value in the fields of smart packaging, sports protective gears, and consumer electronic products.https://ojs.bioresources.com/index.php/BRJ/article/view/24952mex3d printingstructural toughnessrigid shell-flexible infillcomposite structure |
| spellingShingle | Chen Wang Han-yi Huang Xiaowen Wang Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure BioResources mex 3d printing structural toughness rigid shell-flexible infill composite structure |
| title | Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure |
| title_full | Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure |
| title_fullStr | Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure |
| title_full_unstemmed | Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure |
| title_short | Structural Toughness Enhancement Method for Material Extrusion-Based 3D-Printed Model: A Rigid Shell-Flexible Infill Composite Structure |
| title_sort | structural toughness enhancement method for material extrusion based 3d printed model a rigid shell flexible infill composite structure |
| topic | mex 3d printing structural toughness rigid shell-flexible infill composite structure |
| url | https://ojs.bioresources.com/index.php/BRJ/article/view/24952 |
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