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

Conference · Tue Oct 14 04:00:00 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
• Country of Publication: United States
• Language: English

Related Subjects

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