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...

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Autores principales:	Yehia Ibrahim, Ahmed Elkholy, Jonathon S. Schofield, Garrett W. Melenka, Roger Kempers
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2020
Materias:	additive manufacturing 3d-printed continuous fiber reinforced polymer composites fused filament fabrication thermal conductivity enhancement heat exchangers Polymers and polymer manufacture TP1080-1185 Automation T59.5
Acceso en línea:	https://doaj.org/article/760ddd6e413c4477be574477724d8d88
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spelling	oai:doaj.org-article:760ddd6e413c4477be574477724d8d882021-12-02T10:34:44ZEffective thermal conductivity of 3D-printed continuous fiber polymer composites2055-035910.1080/20550340.2019.1710023https://doaj.org/article/760ddd6e413c4477be574477724d8d882020-01-01T00:00:00Zhttp://dx.doi.org/10.1080/20550340.2019.1710023https://doaj.org/toc/2055-03593D 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.Yehia IbrahimAhmed ElkholyJonathon S. SchofieldGarrett W. MelenkaRoger KempersTaylor & Francis Grouparticleadditive manufacturing3d-printed continuous fiber reinforced polymer compositesfused filament fabricationthermal conductivity enhancementheat exchangersPolymers and polymer manufactureTP1080-1185AutomationT59.5ENAdvanced Manufacturing: Polymer & Composites Science, Vol 6, Iss 1, Pp 17-28 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	additive manufacturing 3d-printed continuous fiber reinforced polymer composites fused filament fabrication thermal conductivity enhancement heat exchangers Polymers and polymer manufacture TP1080-1185 Automation T59.5
spellingShingle	additive manufacturing 3d-printed continuous fiber reinforced polymer composites fused filament fabrication thermal conductivity enhancement heat exchangers Polymers and polymer manufacture TP1080-1185 Automation T59.5 Yehia Ibrahim Ahmed Elkholy Jonathon S. Schofield Garrett W. Melenka Roger Kempers Effective thermal conductivity of 3D-printed continuous fiber polymer composites
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.
format	article
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
title	Effective thermal conductivity of 3D-printed continuous fiber polymer composites
title_short	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_sort	effective thermal conductivity of 3d-printed continuous fiber polymer composites
publisher	Taylor & Francis Group
publishDate	2020
url	https://doaj.org/article/760ddd6e413c4477be574477724d8d88
work_keys_str_mv	AT yehiaibrahim effectivethermalconductivityof3dprintedcontinuousfiberpolymercomposites AT ahmedelkholy effectivethermalconductivityof3dprintedcontinuousfiberpolymercomposites AT jonathonsschofield effectivethermalconductivityof3dprintedcontinuousfiberpolymercomposites AT garrettwmelenka effectivethermalconductivityof3dprintedcontinuousfiberpolymercomposites AT rogerkempers effectivethermalconductivityof3dprintedcontinuousfiberpolymercomposites
_version_	1718397001666658304

Effective thermal conductivity of 3D-printed continuous fiber polymer composites

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