Prediction Model of Shielding Effectiveness of Electromagnetic Shielding Fabric With Rectangular Hole

Liu, Zhe; Yang, Yalan; Wang, Xiu Chen; Zhou, and Zhong

doi:10.2528/pierc14022103

Cited by 9 publications

(7 citation statements)

References 10 publications

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“…Conductive fabrics have been proposed for different applications since their notable characteristics, such as flexibility, high conductivity, low weight, impermeability, and durability. Possible applications reported in the open literature include electromagnetic shielding [1], sensing [2], electrostatic elimination [3], transmission of electrical signals, heating [4], wearable antennas [5], and energy harvesting and storage [6]. They can be used to cover electronic equipment and walls to provide light weight electromagnetic shielding [7] and also to provide multiple functionalities [8].…”

Section: Introductionmentioning

confidence: 99%

Specific Action as a Metric to Determine Thermal Degradation of Conductive Fabrics Exposed to High Current Impulses

Acosta¹,

Caviativa²,

Manrique³

et al. 2020

PIER C

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In this paper, the thermal degradation of electro-conductive fabrics exposed to high current impulses is studied by using an equivalent resistive circuit and a technique commonly applied to the analysis of exploding wires. A method to estimate the threshold burst current of conductive fabrics is derived based on the so-called specific action, which is defined as the integral of the squared current density over the time applied at critical locations of the fabric such as the contact areas between yarns. The model has been experimentally validated on woven and non-woven fabrics using lightning impulse currents applied to the conductive fabrics coated with Cu-Ni alloy. A general rule for determining the dimensions of conductive fabrics as a function of the input-current specific-energy levels has also been derived.

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Section: Introductionmentioning

confidence: 99%

Specific Action as a Metric to Determine Thermal Degradation of Conductive Fabrics Exposed to High Current Impulses

Acosta¹,

Caviativa²,

Manrique³

et al. 2020

PIER C

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show abstract

“…In addition, several papers giving results of EM shielding modeling of inhomogeneous or porous structures have been introduced. 13 The EM shielding efficiency of planar materials has been derived in detail based on the sheet impedance model. 14 Two models that are used to calculate the SE of EM materials have been presented and compared.…”

mentioning

confidence: 99%

A calculating method for the electromagnetic shielding effectiveness of metal fiber blended fabric

Liang

Cheng

Xiao

et al. 2017

Textile Research Journal

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In order to obtain a simple and accurate calculation method of shielding effectiveness for woven fabric containing metal fiber yarns, a conductive grid structure model composed of two parallel metal yarn periodic arrays was established. The two periodic arrays were cross-arrangement. The calculation formula of shielding effectiveness for the fabric was deduced through the transfer matrix of the electromagnetic field. The theoretical value of shielding effectiveness of the fabric using the theoretical formula and the measured value tested by the shielding chamber method were compared. Both sets of data were analyzed respectively from the metallic yarn periodic spacing, diameter, electric conductivity, electromagnetic wave polarization direction, and the weaving angle. The result shows that a reasonable agreement between the theoretical value and the measured value has been achieved in a frequency range from 4 to 14 GHz. This shows that the theoretical calculation model is simple, highly precise, and is valuable for the design and development of fabric containing metal fiber yarns. It can be used for estimating the electromagnetic shielding effectiveness of the fabric.

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“…17 Nevertheless, in recent years, several papers giving results of electromagnetic shielding modeling of inhomogeneous or porous structures have appeared. [18][19][20][21] There are several methods available for electromagnetic SE measurement. However, for thin planar structures, there is no global standard defining the evaluation of small samples of only several tens of centimeters in size.…”

mentioning

confidence: 99%

A new method and apparatus for evaluating the electromagnetic shielding effectiveness of textiles

Šafářová

Tunák

Truhlář

et al. 2015

Textile Research Journal

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Textile structures with electromagnetic shielding ability are widely used to attenuate the strength of electromagnetic fields, and their functionality is evaluated through direct measurement of their electromagnetic shielding effectiveness. Depending on the size of the shield and measured frequency range, various test methods can be used. There is still a need for development of a rapid testing procedure designed for special materials where only small samples are accessible. The paper presents a new convenient shielding effectiveness measuring procedure based on the modified shielded box method. The design, construction, and testing results of a new device are described in this paper. The proposed method is primarily designed for rapid comparative measurements of newly fabricated samples of relatively small size. Replacement of existing measurement standards is not the goal of this proposal. The main advantages of the new device and methodology are a small required sample size, no necessity of sample preparation to special shapes or dimensions, rapid measurements, and simple and cheap equipment in comparison with standardized equipment. To prove usability of the proposed method the electromagnetic shielding effectiveness of a textile sample set was tested with the help of the new method and the obtained results were statistically compared with those gained by the coaxial transmission line method based on ASTM D 4935-10. The agreement between results from the proposed and comparative methods was verified for textile samples with low and intermediate electric conductivity. Suitability, scope of application, benefits, and limitations of proposed measuring system are discussed.

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Prediction Model of Shielding Effectiveness of Electromagnetic Shielding Fabric With Rectangular Hole

Cited by 9 publications

References 10 publications

Specific Action as a Metric to Determine Thermal Degradation of Conductive Fabrics Exposed to High Current Impulses

Specific Action as a Metric to Determine Thermal Degradation of Conductive Fabrics Exposed to High Current Impulses

A calculating method for the electromagnetic shielding effectiveness of metal fiber blended fabric

A new method and apparatus for evaluating the electromagnetic shielding effectiveness of textiles

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