Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing
The increasing adoption of short carbon fibre-reinforced plastics (sCFRP) manufactured through material extrusion (MEX) in high-value-added industries has driven the development of various post-processing methods to enhance MEX-manufactured sCFRP mechanical properties. However, conventional post-pro...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Virtual and Physical Prototyping |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2025.2499934 |
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| author | Sangjun Jeon Seong Je Park Seung Ki Moon Daejong Yang |
| author_facet | Sangjun Jeon Seong Je Park Seung Ki Moon Daejong Yang |
| author_sort | Sangjun Jeon |
| collection | DOAJ |
| description | The increasing adoption of short carbon fibre-reinforced plastics (sCFRP) manufactured through material extrusion (MEX) in high-value-added industries has driven the development of various post-processing methods to enhance MEX-manufactured sCFRP mechanical properties. However, conventional post-processing methods require high temperatures and extended processing times, leading to potential polymer degradation. This study presents a novel room-temperature approach using cold isostatic pressing (CIP) to enhance mechanical properties with reduced anisotropy in MEX-manufactured sCFRP components. The effects of various CIP pressures (250-1000 bar) on the mechanical properties were evaluated through tensile, flexural and interlaminar shear strength (ILSS) tests. Additionally, mechanical anisotropy was assessed using tensile tests at different raster angles (0°, 90°) before and after CIP treatment. The mechanical properties significantly improved after CIP treatment, with the optimal pressure of 500 bar, resulting in a 103% increase in tensile strength for 0° raster angle specimens and a 143.3% increase for 90° specimens, effectively reducing the anisotropy from 77.3% to 42.1%. Microstructural analysis revealed reduced voids and enhanced layer adhesion with increased crystallinity. CIP-treated sCFRP maintained excellent dimensional stability within a 3% variation. This study demonstrates the potential of room-temperature CIP as a post-processing method for improving the mechanical properties of MEX-manufactured composites. |
| format | Article |
| id | doaj-art-0aff687b84a74433b2e50bd9da740f10 |
| institution | OA Journals |
| issn | 1745-2759 1745-2767 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj-art-0aff687b84a74433b2e50bd9da740f102025-08-20T01:50:46ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672025-12-0120110.1080/17452759.2025.2499934Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressingSangjun Jeon0Seong Je Park1Seung Ki Moon2Daejong Yang3Department of Future Convergence Engineering, Kongju National University, Cheonan, Republic of KoreaSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, SingaporeDepartment of Future Convergence Engineering, Kongju National University, Cheonan, Republic of KoreaThe increasing adoption of short carbon fibre-reinforced plastics (sCFRP) manufactured through material extrusion (MEX) in high-value-added industries has driven the development of various post-processing methods to enhance MEX-manufactured sCFRP mechanical properties. However, conventional post-processing methods require high temperatures and extended processing times, leading to potential polymer degradation. This study presents a novel room-temperature approach using cold isostatic pressing (CIP) to enhance mechanical properties with reduced anisotropy in MEX-manufactured sCFRP components. The effects of various CIP pressures (250-1000 bar) on the mechanical properties were evaluated through tensile, flexural and interlaminar shear strength (ILSS) tests. Additionally, mechanical anisotropy was assessed using tensile tests at different raster angles (0°, 90°) before and after CIP treatment. The mechanical properties significantly improved after CIP treatment, with the optimal pressure of 500 bar, resulting in a 103% increase in tensile strength for 0° raster angle specimens and a 143.3% increase for 90° specimens, effectively reducing the anisotropy from 77.3% to 42.1%. Microstructural analysis revealed reduced voids and enhanced layer adhesion with increased crystallinity. CIP-treated sCFRP maintained excellent dimensional stability within a 3% variation. This study demonstrates the potential of room-temperature CIP as a post-processing method for improving the mechanical properties of MEX-manufactured composites.https://www.tandfonline.com/doi/10.1080/17452759.2025.2499934 |
| spellingShingle | Sangjun Jeon Seong Je Park Seung Ki Moon Daejong Yang Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing Virtual and Physical Prototyping |
| title | Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing |
| title_full | Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing |
| title_fullStr | Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing |
| title_full_unstemmed | Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing |
| title_short | Enhanced mechanical properties and reduced anisotropy of material extrusion-manufactured short carbon fibre-reinforced plastic via cold isostatic pressing |
| title_sort | enhanced mechanical properties and reduced anisotropy of material extrusion manufactured short carbon fibre reinforced plastic via cold isostatic pressing |
| url | https://www.tandfonline.com/doi/10.1080/17452759.2025.2499934 |
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