Electrical Conductivity and Electromagnetic Shielding Effectiveness of Bio-Composites

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 p...

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Bibliographic Details
Published inJournal of composites science Vol. 4; no. 1; p. 28
Main Authors Tserpes, Konstantinos, Tzatzadakis, Vasileios, Bachmann, Jens
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2020
Subjects
Aircraft
Autoclaving
bio-composites
Biological materials
Carbon
Carbon fiber reinforced plastics
Carbon-epoxy composites
Communication
Composite materials
Conductivity
electrical conductivity
Electrical resistivity
Electromagnetic shielding
electromagnetic shielding effectiveness
Electromagnetism
Epoxy resins
Flax
Mathematical models
Numerical analysis
Numerical models
Prepregs
Rosin
Standard deviation
Surveillance
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Summary: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.
ISSN:2504-477X
2504-477X
DOI:10.3390/jcs4010028