Experimental Data for Study on the Shielding Effect of Electromagnetic Wave

Chen-Ching Ting^1*, Chien-Chih Chen²

¹Department of Mechanical Engineering, National Taipei University of Technology, Chinese Taipei.
²Institute of Mechanical and Electrical Engineering, National Taipei University of Technology, Chinese Taipei.

DOI: 10.4236/eng.2011.37093                

Abstract

This article presents some new experimental data for study the shielding effect of electromagnetic wave. The frequencies of electromagnetic wave are mainly focused on emission of daily electrical equipments, which are normally called “low frequency electromagnetic waves”. In this work, a water pump with maximum magnetic field intensity of ca. 2300 mG was applied as emission source of the electromagnetic wave. Experimental measurements used various shielding materials with the major constituent iron (Fe) in the form of plate for studying shielding effect of electromagnetic wave. The studied parameters were different thicknesses and gaps of the plate. The results show that pure iron plate has the best effect for shielding the magnetic field and its transmission ratio of magnetic field is proportional to distance between the emission source and the shielding plate. Moreover, the shielding plate close to the emission source received better protection.

Keywords

Shielding Effect, Electromagnetic Wave, Low Frequency, Iron

Conflicts of Interest

The authors declare no conflicts of interest.

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