EMI Shielding Investigation of Composite Materials against the Lightning Strike Effect in Aircraft

Abstract

To meet the need to eliminate lightning strikes in aircraft, an efficient technique for producing electromagnetic shielding composite materials has been devised. Stir casting was used to combine AL6061, Silicon Carbide (SiC), and Fly Ash (FA) layers to make thin (1 mm thick) electromagnetic shielding composites. The material created by altering the percentages of AL6061/Sic/FA has a high Shielding Efficiency (SE) of 47.8-55.6 dB between 8 and 12 GHz, making it ideal for electromagnetic shielding in airplanes, because of the interaction between the magnetic field of incident Electromagnetic (EM) radiation and magnetic dipoles and the reflection loss of SiC, the Electromagnetic Interference (EMI) shielding composite attenuated EM waves through the "absorption-reflection" mechanism. The electromagnetic shielding composites reported in this study have enormous promise in precision electronic equipment and aviation systems.