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Usability of a Modified Method for Testing Emissivity to Assess the Real Shielding Properties of Textiles

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The usability of a modified method for testing the effectiveness of multi-layer textile shields against electromagnetic radiation (EMR) was examined within the frequency range of 30 MHz to 6900 MHz. The textile-polymeric materials under investigation were spread out on the side surface of a foamed polystyrene cylinder tightly enclosing an EMR source placed in its interior. Tests were carried out on several foamed polystyrene structures with various geometric dimensions that could affect the test results obtained. The tests were performed in an anechoic chamber to provide predictable and reproducible measurement conditions. In order to verify the method proposed and the measurement results obtained, the coefficient of transmission was tested with the use of a waveguide applicator, which made it possible to assess the shielding properties of the multi-layer textile material under testing. Owing to the specific measuring system at our disposal, measurements were performed with the use of the waveguide method within the frequency range of 900 MHz to 6900 MHz.

Tags: emissivity measurement, shielding effectiveness, multi-layer textiles, textile-polymeric shields.

Citation: Brzeziński S., Rybicki T., Karbownik I., Śledzińska K., Krawczyńska I.; Usability of a Modified Method for Testing Emissivity to Assess the Real Shielding Properties of Textiles. FIBRES & TEXTILES in Eastern Europe 2010, Vol. 18, No. 5 (82) pp. 76-80.

Published in issue no 5 (82) / 2010, pages 76–80.

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