Problem 7
MATHEMATICAL MODELLING AND SIMULATION OF ELECTROMAGNETIC SHIELDING EFFECTECTIVENESS OF POLYESTER – COTTON BLENDED WOVEN FABRIC
Problem Presenter: |
Dinesh Chudasama, Associate Professor, The M S University of Baroda, Vadodara, (dinesh27476@yahoo.com) |
Academic Student Co-ordinator |
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Industry Student Co-ordinator |
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Mentor from Industry |
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Mentor from Academia |
Dr. S. B. Chaudhari, Associate Professor, The M S University of Baroda, Vadodara, (s.b.chaudhari@msubaroda.ac.in) |
Combined Supervisor |
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Abstract
As the technology grows, use of electrical and electronic systems has increased enormously in all the engineering and technology fields. Any electrical apparatus such as high voltage power lines, radar, communication system, radios, televisions, household appliances, computers, mobile phones etc., generates electromagnetic waves which creates interference to the circuit of the devices and also affects human health due to prolong exposure. The disturbance may interrupt, obstruct or otherwise degrade or limit the effective performance of the circuit. These effects can range from a simple degradation of data to a total loss of data. If an electromagnetic wave gets into an organism, it vibrates molecules to give out heat.
The common material used for the construction of enclosures for shielding is metal, like copper, brass, and aluminum, silver, nickel, stainless steel, metalized plastics. Although such materials have good shielding performance, but it is low elasticity, heavy, high density, easy to corrosion, expensive. Weight in industries like the aircraft, transportation, and aerospace industries is costly. So there was a need for light weight, flexible, corrosion resistant and stronger material. Textile material fulfills all these requirements. So people started use of textile material as EM shield. Most of the textile material is electrically non conductive. So it was necessary to make textile material electrically conductive. There are various methods available to make textile material electrically conductive.
In the present research work, we choose commercially available polyester-cotton blended fabric and made it electrically conductive by coating it surface with silver metal with 1 , 3 and 5 micrometer coating thickness. We measured electromagnetic shielding effectiveness as per ASTM –D-4935 co-axial transmission method and achieved 90% electromagnetic shielding effectiveness.
At present no mathematical model and simulation is available presenting this electromagnetic shielding effectiveness phenomena. We want to model this electromagnetic shielding effectiveness using experimental data obtained in this research work and validate the mathematical model.
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