Statistics – Applications
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..458..741s&link_type=abstract
Space technology and applications international forum -1999. AIP Conference Proceedings, Volume 458, pp. 741-746 (1999).
Statistics
Applications
Specific Materials: Fabrication, Treatment, Testing, And Analysis
Scientific paper
The purpose of this paper is to present an engineering study of the electromagnetic shielding effectiveness of composite materials used in space applications. The objective of the study is to identify and quantify the important electrical characteristics of composite materials proposed as substitutes for conventional metal-based structural elements of spacecraft. Current design practices utilized by various developers of spacecraft, particularly those with survivability and endurability requirements, employ variations of design constraints which rely on quantifiable and testable control of electromagnetic topology. These design practices are based on extensive knowledge and experience gained through analyses and tests of configurations on metallic structures and metal-enclosed electronics boxes. The purpose of this study is to determine, analytically and experimentally, the relevant electromagnetic characteristics of selected classes of composite material being recommended for inclusion in designs of new spacecraft systems. This study surveyed existing electromagnetic databases to determine known electrical characteristics of various advanced composite materials proposed as substitutes for spacecraft metal-based structures and enclosure materials. Particular attention was focused on determining the utility of this data in quantifying the electromagnetic shielding effectiveness through nominal bulk properties such as resistivity/conductivity and electrical connectivity through bonds/joints. For a select set of composite material, an experimental approach to evaluate the important electromagnetic characteristics of sample configurations was used. Primary material focus of this study is on carbon/epoxy, graphite/epoxy, and carbon/cyanate ester materials.
Liechty Gary H.
Serna Patrick J.
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