Modelling and Measurement of Electromagnetic Shielding Effectiveness

Merizgui, Tahar; Hadjadj, Abdechafik; Kious, Mecheri

doi:10.1109/cistem.2018.8613459

Cited by 8 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nowadays, the electromagnetic shielding materials is a very important field and became a main stream of research all over the world in many application such as health care, electronics and industrial to protect them from the external radiations [1][2]. It radically solves the problem by removing the electromagnetic interference EMI.…”

Section: Introductionmentioning

confidence: 99%

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Merizgui¹,

Hadjadj²,

Kious³

et al. 2019

RCMA

View full text Add to dashboard Cite

In this paper, we present a comparison study between theoretical and experimental results to improve the performance of materials such as electrical proprieties (permeability, permittivity, and conductivity) and shielding efficiency at high temperature by using a different designation of hybrid composite. The main aim of this research study is to prepare a high stable microwave shielding hybrid epoxy composite with a modified surface MWCNTs and Iron (III) oxide nano particles addition in epoxy resin matrix/Kenaf fibre. The morphology of the obtained shields was investigated by scanning electron microscopy. Thus, additions of MWCNTs and iron (III) oxide particles increase the shielding effectiveness with a modified surface on these reinforcements by increasing the electrical behavior against the external radiation at high temperature of epoxy matrix with incremental of temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Merizgui¹,

Hadjadj²,

Kious³

et al. 2019

RCMA

View full text Add to dashboard Cite

show abstract

“…In this study a novel structure of polymer shield have been developed through MWCNT/Fe 2 O 3 particle- reinforced conducting composites that can be used in several industrial and commercial shielding applications with excellent mechanical flexibility and provides an effective electromagnetic interference (EMI) shielding at high temperature. The kenaf fiber in resin epoxy matrix reduces the stress concentration thereby increase the tensile strength thanks to its low density of 1.45 g/cm 3 . Also, the thermal degradation stability increase with the cross linking density.…”

Section: Discussionmentioning

confidence: 99%

“…The epoxy matrix used here was Araldite LY556, 190 g/ mol and density of 1.2 g/cm 3 were procured from Sigma Aldrich. Kenaf fiber of Continuous woven mat (90 /0 ) and density 2.8 g/cm 3 was used as fiber reinforcement.…”

Section: Specimen Preparationmentioning

confidence: 99%

See 1 more Smart Citation

Electromagnetic shielding effectiveness improvement with high temperature in far‐field behavior multiwall carbon nanotube/iron (III) particles addition in composites

et al. 2020

View full text Add to dashboard Cite

The hybrid polymer composite (HPMC) are increasingly used in the most shielding applications in the far field region, but the main problem is these HPMC should be having a good shielding efficiency and works at high temperature. The purpose of this research study was to prepare a high stable microwave shielding hybrid polymer composite for incremental temperature implementations with surface modified MWCNTs and Fe2O3 filled contents. In this paper, the kenaf fiber, Iron (III) oxide and MWCNTs particles were surface‐treated by APTMS for effective dispersion and adhesion on epoxy matrix medium. The morphology of the obtained shields was investigated by scanning electron microscopy. Thus, additions of MWCNTs and Iron (III) oxide particles increase the magnetic permeability and electrical permittivity of epoxy polymer matrix at high temperature (25°C‐100°C‐200°C). The kenaf fibers increase the mechanical properties such as the flexural, tensile. The principal advantages of these compositions are its low cost and its higher electrical conductivity which make it a suitable material as shielding material against electromagnetic field at high temperature. For electromagnetic compatibility in the far‐field regions, the adequate SE in the frequency range of 2 to 18 GHz of the epoxy polymer matrix‐kenaf fiber conducting composites was obtained by adding the MWCNT and Fe2O3 particles.

show abstract

“…All electronic tools that distribute or transmit electrical energy create electromagnetic waves, which have harmful impacts on human health, surrounding environment, and device performance [1]. The electromagnetic wave created by them gradually interfere with each other, as well are called the electromagnetic interference (EMI) [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Impact of Temperature Variation on the Electromagnetic Shielding Behavior of Multilayer Shield for EMC Applications

Merizgui¹,

Hadjadj²,

Kious³

et al. 2019

RCMA

View full text Add to dashboard Cite

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), 50º C, 85º C to 110º 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 85º 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.

show abstract

Modelling and Measurement of Electromagnetic Shielding Effectiveness

Cited by 8 publications

References 7 publications

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Enhanced of Electrical Properties and Shielding Efficiency of Hybrid Composite with Temperature

Electromagnetic shielding effectiveness improvement with high temperature in far‐field behavior multiwall carbon nanotube/iron (III) particles addition in composites

Impact of Temperature Variation on the Electromagnetic Shielding Behavior of Multilayer Shield for EMC Applications

Contact Info

Product

Resources

About