Study of zero CTE (coefficients of thermal expansion) of graphite/epoxy composites

Conference · Tue Oct 14 00:00:00 EDT 1986

OSTI ID:5921877

Feng, W W; Schauer, D A

The design of composite with very low coefficients of thermal expansion (CTE) is presented in this paper. The magnitude of the CTE of a composite laminate is usually coupled with the mechanical properties. In this paper, the thermomechanical properties of multidirectional laminates, consisting of plies with arbitrary orientations and stacking sequences, are obtained by the laminate theory. Tests are performed to determine the thermomechanical properties of unidirectional composite laminates and to verify the analytical results for a variety of composite laminates. These tests measure the elastic moduli, Poisson's ratios, and CTEs. In order to provide the required accuracies for measuring low CTEs, a differential dilatometer is used. All test results agree with the analytical predictions. 6 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5921877
• Report Number(s): UCRL-95577; CONF-870189-1; ON: DE87013557
• Resource Relation: Conference: Society of Mechanical Engineers composites in manufacturing 6 conference, Anaheim, CA, USA, 19 Jan 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
COMPUTER-AIDED DESIGN
THERMAL EXPANSION
CARBON FIBERS
COMPOSITE MODELS
COMPUTER CODES
DILATOMETRY
ELASTICITY
EPOXIDES
GRAPHITE
LAYERS
MECHANICAL TESTS
POISSON RATIO
STRAINS
CARBON
ELEMENTAL MINERALS
ELEMENTS
EXPANSION
FIBERS
MATERIALS
MATERIALS TESTING
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MINERALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PARTICLE MODELS
TENSILE PROPERTIES
TESTING
THERMAL ANALYSIS
360603* - Materials- Properties