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Thermal expansion of graphite-epoxy between 116 K and 366 KA Priest laser interferometer was developed to measure the thermal strain of composite laminates. The salient features of this interferometer are that: (1) it operates between 116 K and 366 K; (2) it is easy to operate; (3) minimum specimen preparation is required; (4) coefficients of thermal expansion in the range of 0-5 micro epsilon/K can be measured; and (5) the resolution of thermal strain is on the order of micro epsilon. The thermal response of quasi-isotropic, T300/5208, grahite-epoxy composite material was studied with this interferometer. The study showed that: (1) for the material tested, thermal cycling effects are negligible; (2) variability of thermal response from specimen to specimen may become significant at cryogenic temperatures; and (3) the thermal response of 0.6 cm and 2.5 cm wide specimens are the same above room temperature.
Document ID
19820010406
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Short, J. S. (NASA Langley Research Center Hampton, VA, United States)
Hyer, M. W. (NASA Langley Research Center Hampton, VA, United States)
Bowles, D. E. (NASA Langley Research Center Hampton, VA, United States)
Tompkins, S. S. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: is Large Space Systems Technol., 1981
Subject Category
Launch Vehicles And Space Vehicles
Accession Number
82N18280
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19820010401Collected WorksLarge space systems technology, 1981
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