Electromagnetic Shielding of Structural Foams by Using Internal Conductive Materials.
Interim rept. 14 Feb 77-14 Aug 77,
GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION
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This report summarizes the preliminary analysis performed during the first phase of the program to assess the RF shielding effectiveness obtainable by using internal conductive materials in structural foams. The major emphasis was on the use of carbongraphite fibers as the conductive material although consideration was given to metalized glass fibers and to metal particles. Several mathematical analysis techniques were considered for assessing shielding effectiveness including the method of moments, wire grid analysis, meteorological, and plane wave analysis. The plane wave analysis technique was deemed the most applicable. Calculations are presented of shielding effectiveness in the HF through UHF frequency range for various material characteristics. Recommendations are also presented on test panels that should be fabricated during the second phase of the program to verify the theoretical predictions. Author
- Refractory Fibers
- Laminates and Composite Materials
- Radio Communications