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Effect of Process Parameters on Tensile Mechanical Properties of 3D Printing Continuous Carbon Fiber-Reinforced PLA Composites

Materials, 2020-08, Vol.13 (17), p.3850 [Peer Reviewed Journal]

2020. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2020 by the authors. 2020 ;ISSN: 1996-1944 ;EISSN: 1996-1944 ;DOI: 10.3390/ma13173850 ;PMID: 32878337

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Title:
Effect of Process Parameters on Tensile Mechanical Properties of 3D Printing Continuous Carbon Fiber-Reinforced PLA Composites
Author: Dou, Hao ; Cheng, Yunyong ; Ye, Wenguang ; Zhang, Dinghua ; Li, Junjie ; Miao, Zhoujun ; Rudykh, Stephan
Subjects: 3-D printers ; 3D printing ; Additive manufacturing ; Carbon fiber reinforcement ; Carbon fibers ; continuous carbon fiber ; Continuous extrusion ; Continuous fiber composites ; Extrusion rate ; Fiber composites ; fiber-matrix interface ; Fiber-matrix interfaces ; Mechanical properties ; Polylactic acid ; Polymers ; printing parameters ; Process parameters ; relative fiber content ; tensile mechanical properties ; Tensile strength ; Three dimensional composites ; Three dimensional printing
Is Part Of: Materials, 2020-08, Vol.13 (17), p.3850
Description: Three-dimensional (3D) printing continuous carbon fiber-reinforced polylactic acid (PLA) composites offer excellent tensile mechanical properties. The present study aimed to research the effect of process parameters on the tensile mechanical properties of 3D printing composite specimens through a series of mechanical experiments. The main printing parameters, including layer height, extrusion width, printing temperature, and printing speed are changed to manufacture specimens based on the modified fused filament fabrication 3D printer, and the tensile mechanical properties of 3D printing continuous carbon fiber-reinforced PLA composites are presented. By comparing the outcomes of experiments, the results show that relative fiber content has a significant impact on mechanical properties and the ratio of carbon fibers in composites is influenced by layer height and extrusion width. The tensile mechanical properties of continuous carbon fiber-reinforced composites gradually decrease with an increase of layer height and extrusion width. In addition, printing temperature and speed also affect the fiber matrix interface, i.e., tensile mechanical properties increase as the printing temperature rises, while the tensile mechanical properties decrease when the printing speed increases. Furthermore, the strengthening mechanism on the tensile mechanical properties is that external loads subjected to the components can be transferred to the carbon fibers through the fiber-matrix interface. Additionally, SEM images suggest that the main weakness of continuous carbon fiber-reinforced 3D printing composites exists in the fiber-matrix interface, and the main failure is the pull-out of the fiber caused by the interface destruction.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 1996-1944
EISSN: 1996-1944
DOI: 10.3390/ma13173850
PMID: 32878337
Source: GFMER Free Medical Journals
PubMed Central
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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Effect of Process Parameters on Tensile Mechanical Properties of 3D Printing Continuous Carbon Fiber-Reinforced PLA Composites

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