Effective thermal conductivity of 3D-printed continuous fiber polymer composites
3D printing, especially fused filament fabrication, presents a potentially attractive manufacturing technique for thermal applications such as polymer heat exchangers due to the ability to create complex internal geometries which can be used to enhance convective heat transfer. Recently, commercial...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-01-01
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| Series: | Advanced Manufacturing: Polymer & Composites Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/20550340.2019.1710023 |
| _version_ | 1818891653329453056 |
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| author | Yehia Ibrahim Ahmed Elkholy Jonathon S. Schofield Garrett W. Melenka Roger Kempers |
| author_facet | Yehia Ibrahim Ahmed Elkholy Jonathon S. Schofield Garrett W. Melenka Roger Kempers |
| author_sort | Yehia Ibrahim |
| collection | DOAJ |
| description | 3D printing, especially fused filament fabrication, presents a potentially attractive manufacturing technique for thermal applications such as polymer heat exchangers due to the ability to create complex internal geometries which can be used to enhance convective heat transfer. Recently, commercial and modified open-source printers have utilized continuous fibers such as carbon fiber to create continuous fiber reinforced polymer composites (FRPCs) which enhance the mechanical properties of the printed products. This continuous filler network can also serve to improve thermal conductivity. In this study, the effective thermal conductivity of 3D-printed FRPCs is characterized using a steady-state, modified, guarded hot plate apparatus. The effect of the fiber direction and volume fraction on the effective thermal conductivity of the 3D-printed composites was characterized experimentally and modeled analytically using series and parallel models. Thermal conductivities of up to 2.97 W/mK were measured for samples in which the fibers were aligned with the direction of heat flow. Measured values were in good agreement with analytical model predictions. The importance of fiber conductivity on overall performance of the FRPCs was further demonstrated using a handlaid-up, pitch-based carbon fiber sample which exhibited an effective thermal conductivity of 23.6 W/mK. |
| first_indexed | 2024-12-19T17:44:14Z |
| format | Article |
| id | doaj.art-760ddd6e413c4477be574477724d8d88 |
| institution | Directory Open Access Journal |
| issn | 2055-0359 |
| language | English |
| last_indexed | 2024-12-19T17:44:14Z |
| publishDate | 2020-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Advanced Manufacturing: Polymer & Composites Science |
| spelling | doaj.art-760ddd6e413c4477be574477724d8d882022-12-21T20:12:07ZengTaylor & Francis GroupAdvanced Manufacturing: Polymer & Composites Science2055-03592020-01-0161172810.1080/20550340.2019.17100231710023Effective thermal conductivity of 3D-printed continuous fiber polymer compositesYehia Ibrahim0Ahmed Elkholy1Jonathon S. Schofield2Garrett W. Melenka3Roger Kempers4York UniversityYork UniversityUniversity of CaliforniaYork UniversityYork University3D printing, especially fused filament fabrication, presents a potentially attractive manufacturing technique for thermal applications such as polymer heat exchangers due to the ability to create complex internal geometries which can be used to enhance convective heat transfer. Recently, commercial and modified open-source printers have utilized continuous fibers such as carbon fiber to create continuous fiber reinforced polymer composites (FRPCs) which enhance the mechanical properties of the printed products. This continuous filler network can also serve to improve thermal conductivity. In this study, the effective thermal conductivity of 3D-printed FRPCs is characterized using a steady-state, modified, guarded hot plate apparatus. The effect of the fiber direction and volume fraction on the effective thermal conductivity of the 3D-printed composites was characterized experimentally and modeled analytically using series and parallel models. Thermal conductivities of up to 2.97 W/mK were measured for samples in which the fibers were aligned with the direction of heat flow. Measured values were in good agreement with analytical model predictions. The importance of fiber conductivity on overall performance of the FRPCs was further demonstrated using a handlaid-up, pitch-based carbon fiber sample which exhibited an effective thermal conductivity of 23.6 W/mK.http://dx.doi.org/10.1080/20550340.2019.1710023additive manufacturing3d-printed continuous fiber reinforced polymer compositesfused filament fabricationthermal conductivity enhancementheat exchangers |
| spellingShingle | Yehia Ibrahim Ahmed Elkholy Jonathon S. Schofield Garrett W. Melenka Roger Kempers Effective thermal conductivity of 3D-printed continuous fiber polymer composites Advanced Manufacturing: Polymer & Composites Science additive manufacturing 3d-printed continuous fiber reinforced polymer composites fused filament fabrication thermal conductivity enhancement heat exchangers |
| title | Effective thermal conductivity of 3D-printed continuous fiber polymer composites |
| title_full | Effective thermal conductivity of 3D-printed continuous fiber polymer composites |
| title_fullStr | Effective thermal conductivity of 3D-printed continuous fiber polymer composites |
| title_full_unstemmed | Effective thermal conductivity of 3D-printed continuous fiber polymer composites |
| title_short | Effective thermal conductivity of 3D-printed continuous fiber polymer composites |
| title_sort | effective thermal conductivity of 3d printed continuous fiber polymer composites |
| topic | additive manufacturing 3d-printed continuous fiber reinforced polymer composites fused filament fabrication thermal conductivity enhancement heat exchangers |
| url | http://dx.doi.org/10.1080/20550340.2019.1710023 |
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