| Titre : |
Impact of temperature variation on the electromagnetic shielding behavior of multilayer shield for EMC applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Tahar Merizgui, Auteur ; Abdechafik Hadjadj, Auteur ; Mecheri Kious, Auteur ; Bachir Gaoui, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 363-367 |
| Note générale : |
Bibliogr. |
| Langues : |
Français (fre) |
| Catégories : |
Blindage (électricité)
Blindage (rayonnements)
Composites
Composites à matrice métallique
Conduction électrique
Cuivre
Diélectriques
Ondes électromagnétiques
Silicium
Structures multicouches
Température
|
| Index. décimale : |
620.1 Mécanique de l'ingénieur (mécanique appliquée) et matériaux |
| Résumé : |
This paper attempts to disclose how temperature variation affects the electromagnetic shielding of a multilayer composite made of copper (Cu) fibers surrounded by silicon (Si). The model of the composite was fabricated by physical vapor deposition method, and tested with the temperature rising from room temperature (RT), 50°C, 85°C to 110°C. Under these temperatures, several electromagnetic shielding parameters of the composite were measured in various operating microwave frequencies (E, F, I and J bands). Among them, dielectric permittivity was acquired by LCR tester, magnetic permeability was measured by vibrating sample magnetometer (VSM), and the electromagnetic (EM) wave attenuation was recorded by typical microwave test bench. The results show that the composite had an EMI shielding of 20dB at 85° and 100dB at the RT ; the reflection loss of the composite (volume fraction: 0.32) was also 100dB at the RT. Thus, the temperature rise suppresses the reflection loss ; the composite has better electromagnetic shielding effect at the RT than at elevated temperatures ; the volume faction enhances the wave attenuation of the composite. The results provide a good reference for the design of stable electromagnetic shielding materials at elevated temperatures. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE : EMI shielding model - Shielding material preparation - Testing of composites
- RESULTS AND DISCUSSION : The effect of temperature on the proposed multilayer composite - The effect of temperature on the electromagnetic characteristics |
| DOI : |
https://doi.org/10.18280/rcma.290604 |
| En ligne : |
https://www.iieta.org/download/file/fid/21502 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34944 |
in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 29, N° 6 (12/2019) . - p. 363-367
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Impact of temperature variation on the electromagnetic shielding behavior of multilayer shield for EMC applications in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 29, N° 6 (12/2019)
