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Effects of LDEF flight exposure on selected polymer matrix resin composite materialsThe characterization of selected graphite fiber reinforced epoxy (934 and 5208) and polysulfone (P1700) matrix resin composites materials which received over five years and nine months of exposure to the low earth orbit (LEO) environment in experiment AO134 on the Long Duration Exposure Facility is reported. The changes in mechanical properties of ultimate tensile strength and tensile modulus for exposed flight specimens are compared to the three sets of control specimens. Marked changes in surface appearance are discussed, and resin loss is reported. The chemical characterization including infrared, thermal, and selected solution property measurements showed that the molecular structure of the polymetric matrix had not changed significantly in response to this exposure.
Document ID
19920015599
Document Type
Conference Paper
Authors
Slemp, Wayne S. (NASA Langley Research Center Hampton, VA, United States)
Young, Philip R. (NASA Langley Research Center Hampton, VA, United States)
Witte, William G., Jr. (NASA Langley Research Center Hampton, VA, United States)
Shen, James Y. (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: LDEF: 69 Months in Space. First Post-Retrieval Symposium, Part 2
Subject Category
NONMETALLIC MATERIALS
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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