Composite fabrics containing metal filaments are used widely for preventing electromagnetic radiation. Many experiments involving them are carried out continuously. Results are simulated in order to analyze their performance. Coding in Matlab is a popular method to compare the electromagnetic shielding properties of composite fabrics but for different options Matlab codes must be edited each time. Scientists who are not experts in coding have difficulties on editing such codes. To overcome this, an application written in C# in Visual Studio with .Net platform was developed. This application is integrated with Bunifu, which allows the application to be well designed. The proposed interface is user friendly and lets the user choose the available fabric with its stitch length from panel section. By setting options one can get the electromagnetic parameters such as scattering (S) parameters, reflection, transmission and absorption coefficients and total shielding effectiveness (SE) values with one click. As the application is integrated with Matlab codes, output is given as a Matlab graph with desired options. In this way the distinctions between the chosen fabrics can be analyzed easily.

Abstract: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. Metal Özlü Kumaşların Elektromanyetik Ekranlama Etkinliklerinin İstatistiksel Analizi Anahtar KelimelerElektromanyetik ekranlama, İletken kumaş, Mikrodalga frekansı, Tanımlayıcı istatistik, ANOVA metodu Özet: 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.

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