The effects of fabric structural parameters on the electromagnetic shielding effectiveness
نویسندگان
چکیده
In this paper, stainless steel core yarn was selected as a conductive yarn to produce conductive fabrics. The electromagnetic shielding effectiveness of twill and some diced woven fabrics with different metal densities were measured by free space measurement technique at horizontal polarization of the antenna. It was found that woven fabric samples shielded well in high frequency band, namely industrial, scientifi c and medical band. The electromagnetic shielding effectiveness of fabric samples woven increased in accordance with the steel core yarn density in high frequency band if the fabric samples were positioned so that the weft yarns were vertical to the antenna polarization. When the effective surface conductivity increased, the decrease in the electromagnetic shielding effectiveness of woven fabric samples, which were positioned so that the weft yarns were parallel to the antenna polarization, was observed as adverse.
منابع مشابه
Effect of various parameters on electromagnetic shielding effectiveness of textile fabrics
The effect of material type, yarn count, pick density, type of mordant and layers of fabrics on the electromagnetic shielding properties of textile materials has been studied. The shielding effectiveness of the fabric is measured by estimating the insertion loss incurred to the signal when the sample is placed in the path of the signal at the frequency range 100 MHz-3 GHz inside the coaxial tra...
متن کاملبررسی تاثیر عوامل ساختاری بر اثربخشی حفاظتی سپرهای الکترومغناطیس دولایه
Introduction: Nowadays, demand for protection against radar radiation using electromagnetic shielding is on the rise. Double-layer or multilayer shielding were devised in order to improve the single layer electromagnetic shielding properties. In this study, we tried to prepare a new double-layers electromagnetic shield and investigate the effect of structural factors such as thickness, similar...
متن کاملInfluence of fabric density on shielding effectiveness of electromagnetic shielding fabric
In this paper, fabric density influence on the shielding effectiveness of electromagnetic shielding fabric is studied. A series of blended shielding fabrics are tested using a waveguide tube testing method to obtain the shielding effectiveness with different density. Experimental results show that the shielding effectiveness increases with the increase of fabric density, and there are two rapid...
متن کاملComputation Model of Shielding Effective- Ness of Symmetric Partial for Anti-electro- Magnetic Radiation Garment
Current shielding effectiveness (SE) of electromagnetic shielding (EMS) fabric is tested in the plane state, the testing results are difficult to describe the shielding effect of a garment in a curve surface state after manufactured by the fabric. To solve this problem, this study proposes a new SE computation model of the EMS fabric based on a SE vector. The model can calculate a theoretical S...
متن کاملبهبود اثربخشی حفاظتی سپرالکترومغناطیسی در برابر امواج راداری باند ایکس با استفاده از عامل پراکندگی
Background and aims: X-band with 8-12.5 frequencies range has various applications such as air control traffic, navy communication and etc. Uncontrolled exposure with microwave can lead to adverse effect on workers. Application of the shielding is superior control for prevention of microwave exposure, now. This study investigated the effect of dispersion on shielding effectiveness improvement a...
متن کامل