A. Hayrettin YÜZER, M. Hilmi NİŞANCI, Ruslan ABDULLA

Metal Özlü Kumaşların Elektromanyetik Ekranlama Etkinliklerinin İstatistiksel Analizi

Bu çalışmada bakır, gümüş ve paslanmaz çelik tel içeren örme kumaşların elektromanyetik ekranlama etkinliklerinin istatistiki analizi yapılmıştır. İstatistik metodları ile değerlendirilecek veriler dalga kılavuzu yöntemi ile 1.7 - 2.6GHz frekans bölgesinde gerçekleştirilen deneylerden elde edilmiştir. Deneylerde ribana, süprem, milano, pike ve selanik türleri olmak üzere 29 farklı örme kumaş numunesi kullanılmıştır. Ekranlama etkinliği değerlerinin kararlığını test etmek için tüm kumaş örneklerinin tanımlayıcı istatistikleri çıkarılmıştır. Ardından, değerler ANOVA metodu yardımı ile kümelere dağıtılmıştır. Böylece, en iyi ve en kötü ekranlama performansına sahip kumaşlar 95% güven düzeyinde tespit edilmiştir. İstatistiki bulguların deney sonuçları ile örtüştüğü gözlenmiştir.

Statistical Analysis of Electromagnetic Shielding Effectiveness of Metal Fiber Blended Fabrics

In this paper the electromagnetic shielding effectiveness (EMSE) of knitted fabrics made of copper, silver and stainless steel blended conductive yarns were analyzed statistically. Data obtained by the experiments carried out in 1.7 - 2.6GHz frequency band with the help of waveguide system was evaluated by statistical methods. A total of 29 different knitted fabric samples were used in the experiments, including rib, weft, milano, lacoste and cardigan types. In order to test the stability of shielding effectiveness (SE) descriptive statistics were presented for all fabric samples. Subsequently, data was distributed into clusters by means of ANOVA method. In this way, the fabrics with the worst and best shielding performance were found at 95% confidence level. The statistical findings overlapped with experimental results.

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