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Title: High-strength light-weight aramid fibre/polyamide 12 composites printed by Multi Jet Fusion
Authors: Chen, Jiayao
Tan, Pengfei
Liu, Xiaojiang
Tey, Wei Shian
Ong, Adrian
Zhao, Lihua
Zhou, Kun
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: Chen, J., Tan, P., Liu, X., Tey, W. S., Ong, A., Zhao, L. & Zhou, K. (2022). High-strength light-weight aramid fibre/polyamide 12 composites printed by Multi Jet Fusion. Virtual and Physical Prototyping, 17(2), 295-307.
Journal: Virtual and Physical Prototyping
Abstract: Multi Jet Fusion (MJF) is a fast-growing powder bed fusion(PBF) additive manufacturing technique which features low production costs and high production speeds. However, MJF currently suffers from limited choice of commercially available composite powders. Here, a new type of composite powder, aramid fibre (AF)–filled polyamide 12 (PA12), was developed for MJF to enhance the mechanical properties of the printed parts. The process–structure–property relationship was established by analysing the fibre arrangement in the composite and systematically investigating the effects of the fibre fraction, fibre length, layer thickness, build orientation, and post-annealing process on the structures and mechanical properties of the printed parts. The results showed significant enhancement in the mechanical performance of the AF/PA12 composites parts in the roller recoating direction along which the fibres preferred to align. The ultimate tensile strength and Young’s modulus of the optimised composite parts were increased by 27% and 179% and further improved by 40% and 216% through a post-annealing process, respectively, compared with those of the neat PA12 part. The manufacturing methodology of these high-strength light-weight composites can be further extended to other PBF techniques for applications in a broad spectrum of fields.
ISSN: 1745-2759
DOI: 10.1080/17452759.2022.2036931
Schools: School of Mechanical and Aerospace Engineering 
Research Centres: HP-NTU Digital Manufacturing Corporate Lab
Rights: © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License ( 4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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