CONSIDERATIONS ABOUT SHIELDING MATERIALS IN LOW FREQUENCY MAGNETC FIELDS

Abstract

This work analyses the magnetic shielding for a large variation interval of perturbative field in terms of both amplitude and frequency. Founded on Finite Element Analysis, shields constructed from different materials are studied. Conclusions about materials behavior for a given frequency but different amplitudes are focused on magnetic neliniarity influence about shielding efficiency. In the final part of the research, there are presented some tips about an acceptable shielding attenuation realized with one single layer of material capable to deal with a large spectrum of frequencies and amplitude of magnetic interferences.

Keywords

• Magnetic fields
• magnetic shielding
• Finite Element Analysis