ISSN: 0884-6804
CODEN: JCTRER
Page Count: 11

Experimental Evaluation of Column Compression Properties of Graphite/Epoxy Composites
Ryder, JT
Senior R&D engineer, senior research scientist, and research scientist, Lockheed-California Co., Rye Canyon Research Laboratory, Calif.

Lauraitis, KN
Senior R&D engineer, senior research scientist, and research scientist, Lockheed-California Co., Rye Canyon Research Laboratory, Calif.

Sandorff, PE
Senior R&D engineer, senior research scientist, and research scientist, Lockheed-California Co., Rye Canyon Research Laboratory, Calif.

Abstract

Experimental procedures for evaluating the column compression properties of graphite/epoxy laminated composites are described. The test procedure allows the determination of a buckling curve up to and including the inelastic, fully supported, zero-length column. Verification of the test procedure is provided by using flat aluminum test specimens. Application to specific graphite/epoxy laminated composites is described. Inelastic compression properties are shown to be highly sensitive to environmental conditions and laminate lay-up. Prediction of the elastic compression properties of graphite/epoxy laminates by the Euler relation is shown to be significantly nonconservative.

Keywords:
composite materials, compressing, buckling, graphite composites

Paper ID: CTR10713J
DOI: 10.1520/CTR10713J
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