DOI: https://doi.org/10.15368/theses.2009.31
Available at: https://digitalcommons.calpoly.edu/theses/126
Date of Award
4-2009
Degree Name
MS in Aerospace Engineering
Department/Program
Aerospace Engineering
Advisor
Eric Mehiel
Abstract
Using MIL-HDBK-419A, MATLAB and Nomographs, Shielding Effectiveness for the Magnetic Field, Electric Field, and Plane Wave were calculated over a frequency range from 10 Hz to 1 GHz. The three shielding tapes used included superalloy, aluminum, and mumetal. Calculations for Shielding Effectiveness involve the computation of Absorption Loss, Reflection Loss, and Re-Reflection Correction Factor. From the outcome of the calculations, it was suitable to conclude that all three metals fulfill the 40 dB Shielding Effectiveness requirements for SGEMP fields for frequencies greater or equal to 1 MHz. Accordingly, all three shielding tapes provide at least 40 dB of shielding to protect certain frequencies against SGEMP Magnetic Field. However, results vary for frequencies below 1 MHz.
Included in
Electromagnetics and Photonics Commons, Metallurgy Commons, Other Engineering Commons, Systems Engineering and Multidisciplinary Design Optimization Commons