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Fabrication temperature-related porosity effects on the mechanical properties of additively manufactured CFRP composites

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posted on 2023-04-03, 14:21 authored by Olusanmi Adeniran, Norman Osa-UwagboeNorman Osa-Uwagboe, Weilong Cong, Monsuru Ramoni
The use of additive manufacturing in fabricating composite components has been gaining traction in the past decade. However, some issues with mechanical performance still need to be resolved. The issue of material porosity remains a pertinent one which needs more understanding to be able to come up with more viable solutions. Different researchers have examined the subject; however, more research to quantitatively determine fabrication temperatures effects at the micro-scale are still needed. This study employed micro-CT scan analysis to quantitatively compare fabrication temperatures effect at 230 °C, 250 °C, 270 °C, and 290 °C on the mechanical properties of AM fabricated carbon-fiber-reinforces plastic (CFRP) composites, testing carbon fiber-reinforced polyamide (CF-PA) and carbon fiber-reinforced acrylonitrile butadiene styrene (CF-ABS) samples. This micro-CT examination followed an SEM evaluation, which was used to determine temperature effects on interlayer and intralayer porosity generation. The porosity volume was related to the mechanical properties, in which it was determined how temperatures influence porosity volumes. It was also determined that fabrication temperature generally affects semicrystalline composites more than amorphous composites. The overall porosity volumes from the interlayer and intralayer voids were determined, with the interlayer voids being more influential in influencing the mechanical properties.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Journal of Composites Science

Volume

7

Issue

1

Publisher

MDPI

Version

  • VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This article is an Open Access article published by MDPI and distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

Acceptance date

2023-01-03

Publication date

2023-01-05

Copyright date

2023

eISSN

2504-477X

Language

  • en

Depositor

Norman Osa-Uwagboe. Deposit date: 1 April 2023

Article number

12

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