On the choice of the dielectric characterization method for foam composite absorber material
| Autor: | Claire Le Paven, Philippe Pouliguen, Ala Sharaiha, Laura Pometcu, Chloé Mejean, Ratiba Benzerga |
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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), The authors would like to thank the Direction Générale de l'Armement (DGA), France for their financial support., 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), Université de Nantes (UN)-Université de Rennes 1 (UR1) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Waveguide (electromagnetism)
Materials science Composite number Physics::Optics 02 engineering and technology Dielectric Measure (mathematics) [SPI]Engineering Sciences [physics] 0202 electrical engineering electronic engineering information engineering Carbon fibers General Materials Science Composite material Reflection coefficient Porosity Mechanical Engineering 020206 networking & telecommunications Epoxy foams Epoxy 021001 nanoscience & nanotechnology Condensed Matter Physics Characterization (materials science) Mechanics of Materials visual_art Dielectric properties visual_art.visual_art_medium CompositesOrganic compounds 0210 nano-technology |
| Zdroj: | Materials Research Bulletin Materials Research Bulletin, Elsevier, 2017, 96 (2), pp.107-114. ⟨10.1016/j.materresbull.2017.04.055⟩ Materials Research Bulletin, 2017, 96 (2), pp.107-114. ⟨10.1016/j.materresbull.2017.04.055⟩ |
| ISSN: | 0025-5408 1873-4227 |
| DOI: | 10.1016/j.materresbull.2017.04.055⟩ |
| Popis: | International audience; AbstractThis paper presents the characterization by three different techniques of a new lossy material made of carbon fibers loaded epoxy foam that can be used as an absorber in anechoic-chambers. The composite was characterized using free space, waveguide and coaxial probe techniques. Dielectric characteristics obtained from the three techniques are different and this is explained by the required dimensions of measured samples, not always representative of the porous form of the composites loaded with long fibers. Our study points out that the free space technique is the most appropriate to measure such composite samples with porosities and load having millimeter dimensions. Dielectric probe and waveguide are not suitable due to a small volume of measure which is not representative of the entire composite. The achieved prototype confirmed this result with a measured reflection coefficient very close to the simulation achieved with the dielectric characteristics obtained by the free space technique. |
| Databáze: | OpenAIRE |
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