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Low‐pressure additive manufacturing of continuous fiber‐reinforced polymer composites
Author(s)
Date Issued
2019-11
Date Available
2021-03-08T12:15:17Z
Abstract
Continuous fibre reinforced polymer composites have found a wide range of applications in the automotive and aerospace industry, due to their lightweight properties. Recently the use of additive manufacturing (AM) has been developed for the fabrication of these composites. This study investigates the use of both atmospheric and for the first time, low-pressure (1 Pa) processing conditions, for the AM of continuous carbon, glass and Kevlar fibre reinforced nylon composites. DSC was used to compare the thermal properties of the three types of fibre reinforced filament, prior to printing. It was found that the melting peak was dependent on filament type, which can be related to the polymer processing conditions used during their fabrication. Based on computed tomography measurements, it was found that the use of low-pressure printing conditions yielded a reduction in porosity for the carbon, glass and Kevlar printed composites of 5.7, 1.0 and 1.7 % respectively. The mechanical properties of the composites were compared, using a short beam shear test, which assisted in the measurement of interlaminar properties. An increase in interlaminar shear strength of 33, 22 and 12% was obtained for the carbon, glass and Kevlar fibre reinforced polymer composites respectively, when printed under low-pressure, compared with that obtained at atmospheric pressure.
Sponsorship
Science Foundation Ireland
Type of Material
Journal Article
Publisher
Wiley
Journal
Polymer Composites
Volume
40
Issue
11
Start Page
4329
End Page
4339
Copyright (Published Version)
2019 Society of Plastics Engineers
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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Low pressure additive manufacturing of continuous fibre reinforced polymer composites.pdf
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1.09 MB
Format
Owning collection
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58
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Mar 28, 2024
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