Shielding Effectiveness of Superalloy, Aluminum, and Mumetal Shielding Tapes

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.

Name thesis:degree_name

MS in Aerospace Engineering

Discipline thesis:degree_discipline

Aerospace Engineering

Year dc:date.available

2009

Author dc:creator

• Cheung, Cindy Suit

Contributors dc:contributor

• Eric Mehiel

• Shielding
• Effectiveness
• Aluminum
• Mumetal
• Superalloy
• Nomographs
• Aerospace Engineering
• Electromagnetics and Photonics
• Metallurgy
• Other Engineering
• Systems Engineering and Multidisciplinary Design Optimization

Identifier

10.15368/theses.2009.31

OAI identifier oai:identifier

oai:digitalcommons.calpoly.edu:theses-1139