Electromagnetic absorber composite made of carbon fibers loaded epoxy foam for anechoic chamber application
| Autor: | Mathieu Badard, Ala Sharaiha, Philippe Pouliguen, Ratiba Benzerga, Chloé Mejean, Laura Pometcu, Claire Le Paven-Thivet |
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| Přispěvatelé: | Institut d'Électronique et des Technologies du numéRique (IETR), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), DGA Maîtrise de l'information (DGA.MI), Direction générale de l'Armement (DGA), DGA, Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Permittivity
Absorption (acoustics) Materials science Anechoic chamber Composite number 02 engineering and technology Dielectric 01 natural sciences 7. Clean energy chemistry.chemical_compound [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI] 0103 physical sciences Dispersion (optics) Carbon fibers General Materials Science Composite material Epoxy foam composites Polyurethane 010302 applied physics Mechanical Engineering Epoxy Composite materials 021001 nanoscience & nanotechnology Condensed Matter Physics [SPI.TRON]Engineering Sciences [physics]/Electronics chemistry Mechanics of Materials visual_art Dielectric properties visual_art.visual_art_medium Microwave absorber 0210 nano-technology |
| Zdroj: | Materials Science and Engineering: B Materials Science and Engineering: B, Elsevier, 2017, 220, pp.59--65. ⟨10.1016/j.mseb.2017.03.009⟩ Materials Science and Engineering: B, 2017, 220, pp.59--65. ⟨10.1016/j.mseb.2017.03.009⟩ |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2017.03.009⟩ |
| Popis: | International audience; This paper presents a new electromagnetic absorbing material developed from carbon fibers loaded epoxy foam for an application in anechoic chamber. The composite was developed in order to replace the currently used pyramidal absorbers made of carbon particles loaded polyurethane foam. Epoxy-composites filled with different weight percentages (from 0 wt.% to 4 wt.%) and length (1 and 3 mm) of carbon fibers were achieved. After an optimization of the dispersion of carbon fibers in composite materials, the dielectric properties of the composites were measured using a coaxial-probe in the frequency range 4–18 GHz. Results have shown that the complex permittivity of the composites increases with the amount of charge and also with the length of the carbon fibers. Absorption performance of a prototype prepared with a low concentration (0.5 wt.%) of carbon fibers was measured in an anechoic chamber: it shows a mean gain of 10 dB compared to a commercial absorber. © 2017 Elsevier B.V. |
| Databáze: | OpenAIRE |
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