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Record Details

Record 49 of 3373
Oxidation and protection of fiberglass-epoxy composite masts for photovoltaic arrays in the low earth orbital environment
Author and Affiliation:
Rutledge, Sharon K.(NASA Lewis Research Center, Cleveland, OH, United States)
Ciancone, Michael L.(NASA Lewis Research Center, Cleveland, OH, United States)
Paulsen, Phillip E.(NASA Lewis Research Center, Cleveland, OH, United States)
Brady, Joyce A.(Cleveland State University, OH, United States)
Abstract: The extent of degradation of fiberglass-epoxy composite masts of the Space Station solar array panel, when these are exposed to atomic oxygen environment of the low-earth orbit, was investigated in ground testing of fiberglass-epoxy composites in an RF plasma asher. In addition, several methods of protecting the composite structures were evaluated, including an aluminum braid covering, an In-Sn eutectic, and a silicone based paint. It was found that, during exposure, the epoxy at the surface of the composite was oxidized, exposing individual glass fibers which could easily be removed. The results of mass measurements and SEM examination carried out after thermal cycling and flexing of exposed composite samples indicated that coatings such as In-Sn eutectic may provide adequate protection by containing the glass fibers, even though mass loss still occurs.
Publication Date: Jan 01, 1988
Document ID:
19890047945
(Acquired Nov 28, 1995)
Accession Number: 89A35316
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Document Type: Conference Paper
Publication Information: (SEE A89-35312 14-24)
Publisher Information: United States
Meeting Information: Materials Stability and Environmental Degradation; Apr. 5-7, 1988; Reno, NV; United States
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Cleveland State Univ.; OH, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COMPOSITE STRUCTURES; EARTH ORBITAL ENVIRONMENTS; EPOXY RESINS; PHOTOVOLTAIC CELLS; PROTECTIVE COATINGS; SPACE STATION STRUCTURES; BEAMS (SUPPORTS); ENVIRONMENTAL TESTS; GLASS FIBERS; LOW EARTH ORBITS; OXYGEN ATOMS; THERMAL CYCLING TESTS
Imprint And Other Notes: IN: Materials stability and environmental degradation; Proceedings of the Symposium, Reno, NV, Apr. 5-7, 1988 (A89-35312 14-24). Pittsburgh, PA, Materials Research Society, 1988, p. 45-52.
Availability Source: Other Sources
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