Material extrusion 3D printing of biodegradable composites reinforced with continuous flax fibers
ID Kajbič, Jure (Author), ID Fajdiga, Gorazd (Author), ID Klemenc, Jernej (Author)

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Fabricating additively manufactured thermoplastic parts with increased load-bearing capacity using material extrusion, namely fused deposition modeling, requires the incorporation of continuous reinforcing fibers. In this study, composites of PLA matrix and continuous flax fibers were additively fabricated using a specially designed 3D printer with multiple deposition toolheads. Unidirectional tensile and flexural specimens with a component-like shape and a fiber volume fraction of up to 18% were fabricated. The mechanical properties were determined for four different composite and matrix layers arrangements. The tensile modulus of elasticity and strength values increased by 3.6 and 2.9 times, respectively, compared to the specimens without the reinforcing fibers. In contrast, the flexural modulus of elasticity improved by 2.4 times, while the flexural strength increased by 1.4 times. It was found that it is possible to influence the mechanical properties and the type of damage by changing the volume fraction of the fibers and the arrangement of the composite layers.

Keywords:fused deposition modeling, FDM, composites, continuous flax fibers, mechanical properties
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
BF - Biotechnical Faculty
Publication status:Published
Publication version:Version of Record
Number of pages:Str. 3610-3620
Numbering:Vol. 27
PID:20.500.12556/RUL-152123-b520b319-259f-87ca-2a29-260db2215492 This link opens in a new window
ISSN on article:2238-7854
DOI:10.1016/j.jmrt.2023.10.148 This link opens in a new window
COBISS.SI-ID:171005955 This link opens in a new window
Publication date in RUL:06.11.2023
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Record is a part of a journal

Title:Journal of materials research and technology
Shortened title:J. mater. res. technol.
COBISS.SI-ID:519699737 This link opens in a new window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Keywords:ciljno odlaganje materiala, kompoziti, neprikinjena lanena vlakna, mehanske lastnosti


Funder:ARRS - Slovenian Research Agency
Project number:P2-0182
Name:Razvojna vrednotenja

Funder:ARRS - Slovenian Research Agency
Funding programme:Young researchers

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