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Electrical Conductivity and Electromagnetic Shielding Effectiveness of Bio-Composites

Tserpes, Konstantinos and Tzatzadakis, Vasileios and Bachmann, Jens (2020) Electrical Conductivity and Electromagnetic Shielding Effectiveness of Bio-Composites. Journal of Composites Science. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/jcs4010028. ISSN 2504-477X.

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Official URL: https://www.mdpi.com/2504-477X/4/1/28


In this paper, the electrical conductivity and electromagnetic shielding effectiveness of two bio-composites are studied by experimental testing and numerical models. Two monolithic composites with partly bio-based content were manufactured. The first bio-composite is made of a carbon fiber fabric prepreg and a partly bio-based (rosin) epoxy resin (CF/Rosin). The second bio-composite is a combination of prepregs of carbon fiber fabric/epoxy resin and flax fiber fabric/epoxy resin (CF-Flax/Epoxy). A single line infusion process was used prior to the curing step in the autoclave. Both variants are exemplary for the possibility of introducing bio-based materials in high performance CFRP. In-plane and out-of-plane electrical conductivity tests were conducted according to Airbus standards AITM2 0064 and AITM2 0065, respectively. Electromagnetic shielding effectiveness tests were conducted based on the standard ASTM D 4935-10. Materials were prepared at the German Aerospace Center (DLR), while characterization tests were conducted at the University of Patras. In addition to the tests, numerical models of representative volume elements were developed, using the DIGIMAT software, to predict the electrical conductivity of the two bio-composites. The preliminary numerical results show a good agreement with the experimental results.

Item URL in elib:https://elib.dlr.de/139640/
Document Type:Article
Title:Electrical Conductivity and Electromagnetic Shielding Effectiveness of Bio-Composites
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Tserpes, KonstantinosUniversity of Patras, GreeceUNSPECIFIED
Tzatzadakis, VasileiosUniversity of Patras, GreeceUNSPECIFIED
Bachmann, Jensjens.bachmann (at) dlr.dehttps://orcid.org/0000-0001-7297-3272
Date:18 March 2020
Journal or Publication Title:Journal of Composites Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/jcs4010028
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:bio-composites; electrical conductivity; electromagnetic shielding effectiveness; rosin; flax
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Bachmann, Jens
Deposited On:21 Dec 2020 08:35
Last Modified:19 Nov 2021 20:39

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