Accession Number : ADA305436

Title :   Development of a Priest Interferometer for Measurement of the Thermal Expansion of Graphite-Epoxy in the Temperature Range 116-366K.

Descriptive Note : Interim rept. no. 30,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG COLL OF ENGINEERING

Personal Author(s) : Short, John S. ; Hyer, Michael W. ; Bowles, David E. ; Post, Daniel ; Tompkins, Stephen S.

PDF Url : ADA305436

Report Date : SEP 1982

Pagination or Media Count : 140

Abstract : The thermal expansion behavior of graphite epoxy laminates between 116 and 366 degrees Kelvin was investigated using a novel implementation of the Priest interferometer concept. This report describes the design, construction and use of the interferometer along with the experimental results it was used to generate. The experimental program consisted of 25 tests on 25.4 mm and 6.35 mm wide, 8-ply pi/4 quasi-isotropic T300-5208 graphite/epoxy specimens and 3 tests on a 25.4 mm wide unidirectional specimen. Experimental results are presented for all tests along with a discussion of the interferometer's limitations and some possible improvements in its design. jg p5

Descriptors :   *THERMAL EXPANSION, *EPOXY LAMINATES, *GRAPHITE EPOXY COMPOSITES, THERMAL PROPERTIES, OPTICS, GRAPHITED MATERIALS, EPOXY RESINS, INTERFEROMETERS.

Subject Categories : Optics
      Inorganic Chemistry
      Laminates and Composite Materials
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE