Electromagnetic shielding effectiveness of copper core-woven fabrics

Perumalraj, R.; Dasaradan, B S; Anbarasu, R.; Arokiaraj, P.; Harish, S. Leo

doi:10.1080/00405000801997587

Cited by 126 publications

(154 citation statements)

References 10 publications

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“…In order to succeed, shielding, one of the popular methods in preventing EM waves, is conducted. Shielding protects human beings, electronic and electrical equipments against radiated electromagnetic energy by providing electromagnetic compatibility [5].…”

Section: Introductionmentioning

confidence: 99%

“…An ordinary fabric is transparent to EM radiation [5]. However, conductive fabrics are composed of yarns and metal fibres that are knitted directly into the fabric providing blockage from EM frequencies.…”

Section: Introductionmentioning

confidence: 99%

“…However, conductive fabrics are composed of yarns and metal fibres that are knitted directly into the fabric providing blockage from EM frequencies. They are used in many types of EM protection products such as protective clothing, shielding tents, and shielding curtain [2,[11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…This is the range which includes the operating frequencies of the majority of electrical devices used in living areas, such as GSM communicating devices, microwaves, and bluetooth featured devices. Besides, there are some researchers who also examine SE of composite fabrics in a wider frequency ranges such as 30 MHz-9.93 GHz [17], 20-18000 MHz [5], 8 GHz-12.4 GHz and 50-110 GHz [10]. These examples overlap with idea that conductive fabrics can be regarded as a shield barrier along the large frequency range.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Shielding Characterization of Conductive Knitted Fabrics

Kizilçay¹,

Delihasanlar²,

Abdulla³

et al. 2017

PIER M

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Abstract-This paper examines the electromagnetic shielding characteristics of milano, cardigan and lacoste with respect to weft and rib type composite knitted fabrics. All of these fabrics, made of hybrid yarns containing 50 µm diameter metal fibres such as copper, silver and stainless steel, were produced for electromagnetic shielding purposes. The shielding effectiveness (SE) of the fabrics was measured by reading S parameters from the signal when the sample was placed in the path of signal at the frequency range 1.7 to 2.6 GHz inside the WR430 waveguide system. After which S parameters was converted to SE values. The variation in electromagnetic shielding effectiveness (EMSE) with the factors, such as radiant frequency, metal type, wales density and geometry, were discussed. Experimental results show that all factors, especially the geometry of the fabric, have significant effect on SE. The best EMSE values were obtained by milano type knitted fabrics which was above 20 dB. It was found that milano, cardigan and lacoste composite fabrics, uncommon in EMSE experiments found in literature, give better shielding performances than rib and weft composite fabrics, under the same conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electromagnetic Shielding Characterization of Conductive Knitted Fabrics

Kizilçay¹,

Delihasanlar²,

Abdulla³

et al. 2017

PIER M

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“…Padmanabhan and Ramakrishnan [8] found that the filament core Dref-3 spun yarn is stronger than 100% cotton yarn and cotton core yarn by about 13% and 20% respectively. Perumalraj et al [14] also reported the production of core-sheath Dref-3 friction spun yarn made out of cotton and polyester sheath and 820 denier copper filaments as core for development of electromagnetic shielding. Many applications in e-textiles have been pointed out by many researchers [15][16][17][18][19] for development of sensor wears, electromagnetic shielding and tele communication using conductive yarns.…”

Section: Introductionmentioning

confidence: 99%

Development of Electromagnetic Shielding Wearable Electronic Textiles using Core Conductive Fabrics

Vigneswaran¹,

Kandhavadivu²

2013

IJSEA

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Today wearable electronics are playing a vital role in many applications such as Military, Medical application, telecommunications and health care garments. Conductive textiles also provide wide range of applications in areas of civilian and military purposes. In this research work an attempt has been made to design and develop core-sheath conductive yarns with copper filament and optical fibre as core and cotton as sheath using Dref-3 Friction spinning system. The special guide mechanism has been designed and used to produce uniform structure of core-sheath conductive yarns. Three different core-sheath ratios such as 67/33, 80/20 and 90/10 respectively, were produced by varying the draft in the second drafting unit which fed the cotton carded slivers to cover the core component. Copper filament of 38 SWG British Standard Gauge has been used as core component. The nominal count of core-sheath conductive yarn produced in this research was 328 tex and core component kept as constant 261 tex for all the yarn samples. Optical core conductive yarns are produced by using CK-20 type optical fibres. The process parameters such as perforated drum speed and yarn delivery speed are 4000 revolution per minute and 70 metres per minute respectively, kept as constant for all the samples. The copper core conductive yarns were used to develop the conductive fabrics. These fabrics have very good scope for many applications for development of electromagnetic shielding wearable textiles, mobile phone charging and body temperature sensing garments. It also has the optical fibre core conductive yarns which were used for the development of signal transferring garment for telecommunication and data transferring purpose. In this work two sensors have been integrated in sensorized garments for monitoring the body temperature. Moreover, it has been pointed out the use of these sensorized garments as a valid alternative to existing instrumentations which are in several health care areas. The results on the copper core conductive yarns and Optical core conductive yarns have studied. The characteristics of core conductive fabrics such as air permeability, tensile strength, electromagnetic shielding effect, aerial density, and fabric cover factor have been analysed. The performance of the conductive fabric garment has been briefly reported. The copper core conductive yarn, Optical core conductive yarn, copper conductive fabric and conductive fabric garment have the very high potential which is to be commercialized.

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Textile Based Shielding Materials

Baltušnikaitė-Guzaitienė

Varnaitė-Žuravliova

2018

Advanced Materials for Electromagnetic Shielding

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Electromagnetic shielding effectiveness of copper core-woven fabrics

Cited by 126 publications

References 10 publications

Electromagnetic Shielding Characterization of Conductive Knitted Fabrics

Electromagnetic Shielding Characterization of Conductive Knitted Fabrics

Development of Electromagnetic Shielding Wearable Electronic Textiles using Core Conductive Fabrics

Textile Based Shielding Materials

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