Analysis of shielding effectiveness in different kinds of electromagnetic shielding fabrics under different test conditions

Li, Yaping; Wang, Xiuchen; Pan, Zhen; Su, Ying; Liu, Zhe; Duan, Jiajia; Li, Yayun

doi:10.1177/0040517517748490

Cited by 17 publications

(11 citation statements)

References 9 publications

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“…The method of metal coating: Li et al [60] conducted experimental tests on SE of silverplated fiber fabrics, copper-nickel fiber fabrics and stainless-steel fiber blended fabrics. The results showed that, at the same frequency, the shielding effect of vertical polarization wave direction and horizontal or 45 degree polarization wave direction of silver-coated fiber fabric and the copper-nickel fabric was higher than that of stainless steel fiber blended fabrics, and the higher the folding degree, the greater the SE.…”

Section: The Experiments To Investigate Em Shielding Fabricsmentioning

confidence: 99%

A Review of Electromagnetic Shielding Fabric, Wave-Absorbing Fabric and Wave-Transparent Fabric

Yin

Gao

et al. 2022

Polymers

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As the basic materials with specific properties, fabrics have been widely applied in electromagnetic (EM) wave protection and control due to their characteristics of low density, excellent mechanical properties as well as designability. According to the different mechanisms and application scenarios on EM waves, fabrics can be divided into three types: EM shielding fabric, wave-absorbing fabric and wave-transparent fabric, which have been summarized and prospected from the aspects of mechanisms and research status, and it is believed that the current research on EM wave fabrics are imperfect in theory. Therefore, in order to meet the needs of different EM properties and application conditions, the structure of fabrics will be diversified, and more and more attentions should be paid to the research on structure of fabrics that meets EM properties, which will be conductive to guiding the development and optimization of fabrics. Furthermore, the application of fabrics in EM waves will change from 2D to 3D, from single structure to multiple structures, from large to small, as well as from heavy to light.

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Section: The Experiments To Investigate Em Shielding Fabricsmentioning

confidence: 99%

A Review of Electromagnetic Shielding Fabric, Wave-Absorbing Fabric and Wave-Transparent Fabric

Yin

Gao

et al. 2022

Polymers

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“…Other research into electromagnetic shielding investigates the content and placing of a conductive component [9,11,13], geometric structure of a fabric [10,12,14]), humidity of textile [7,12], dependence between electric conductivity and EMSE (electromagnetic shielding effectiveness). Fabric porosity has a very big effect on the shielding factor.…”

Section: Introductionmentioning

confidence: 99%

“…Weave type does not affect polarization of electromagnetic waves. Conductive yarn density is an important factor that affects the EMSE of woven fabrics [10,13,14]. It is known that fabrics, containing synthetic fibres, can accumulate electric charge in the long term.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Physical Properties of a Fabric with a Conductive Fibre

Sacevičienė

Klevaitytė

Radavičienė³

et al. 2021

JMD

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The aim of this work is to investigate physical and mechanical performance of fabrics with a conductive fibre after washing conditions. Three commercially available fabrics with a conductive fibre and one fabric without a conductive fibre were chosen as a research object. The physical properties of the fabrics were evaluated by the loss of the mechanical performance, changes in structure and magnetic permeability. Fabric elasticity and thickness decrease after washing, except for the fabric without a conductive fibre. Magnetic field permeability of all fabrics decreases after washing. The properties of the fabric with a conductive fibre woven in one direction change the most, its magnetic field permeability is the greatest. In all cases magnetic field permeability at the seam is lower than in separate pieces of the fabric. The highest frequency of the fabric with a thread woven in both directions is at the seam but in all cases the frequencies of separate pieces of fabrics are lower. Tests showed that the best dielectric properties are of the fabric with conductive yarn woven in the weft direction and the highest capacitance change of which is ΔC=74,79%.

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“…Liu et al (2015a) and Wang et al (2015) further discussed the influence of the holes on the SE of the clothing fabric and pointed out the influence rule of the holes on the SE of the EMS clothing fabric in plane state. Other researches on the EMS clothing are mainly focused on the shielding performance, such as the shielding fiber performance (Vojtech and Neruda, 2013;Duan et al, 2019), identification and analysis of the shielding fiber in fabric (Liu et al, 2017b;Wang et al, 2017), influencing factors of the SE and the reflection performance (Li et al, 2019), the SE prediction (Yang et al, 2019) and the model construction (Wang et al, 2014;Liu et al, 2015b). In above literatures, researchers have done a lot of useful work in the design, manufacture and test methods of the EMS clothing, but there is little research on the influencing rules of the shielding performance of the sleeve.…”

Section: Introductionmentioning

confidence: 99%

Influencing factors and rules of shielding effectiveness of electromagnetic shielding clothing sleeve

Wang

Liu

et al. 2020

IJCST

Self Cite

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PurposeThe change rules of the shielding effectiveness (SE) of the sleeve has not been clarified, which leads to the lack of the basis for the design, manufacture and evaluation of the electromagnetic shielding (EMS) clothing.Design/methodology/approachAccording to a simplified analysis model, a series of sleeve samples with different fabrics and styles are designed and manufactured. The SE of the sleeve is tested with the proposed special test method in a semi-anechoic chamber to analyze the influence of different factors on the SE of the sleeve.FindingsThe SE is greatly reduced about 60–90% after the fabric is manufactured into the sleeve. The larger the sleeve length is, the higher the peak value of the SE is. When the sleeve length is low, the SE value is easy to appear negative. As the cuff circumference increases, the SE of the sleeve will change with the frequency band. The influence of the cuff style on the SE of the sleeve mainly depends on the cuff width and style. The larger the cuff width is, the lower the overall SE of the sleeve is. The more wrinkles there are at the cuff, the better the SE of the sleeve is.Originality/valueOur results provide a reference for the design, production and evaluation of the sleeve and the whole EMS clothing.

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Analysis of shielding effectiveness in different kinds of electromagnetic shielding fabrics under different test conditions

Cited by 17 publications

References 9 publications

A Review of Electromagnetic Shielding Fabric, Wave-Absorbing Fabric and Wave-Transparent Fabric

A Review of Electromagnetic Shielding Fabric, Wave-Absorbing Fabric and Wave-Transparent Fabric

Investigation of the Physical Properties of a Fabric with a Conductive Fibre

Influencing factors and rules of shielding effectiveness of electromagnetic shielding clothing sleeve

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