Charpy Impact of Unidirectional Graphite/Aramid/Epoxy Hybrid Composites

JD Helfinstine

doi:10.1520/STP26955S

SYMPOSIA PAPER Published: 01 January 1977

STP26955S

Charpy Impact of Unidirectional Graphite/Aramid/Epoxy Hybrid Composites

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This report discusses the impact properties of interply hybrids of Kevlar 49 aramid fibers and Thornel 300 graphite fibers in Narmco 5208 epoxy resin. The instrumented Charpy was used to characterize 20-ply unidirectional composites with nine fiber ratios and three stacking sequences. It was observed that the maximum total energy per cross sectional area occurred in a symmetrically interleaved ten-ply Thornel/ten-ply Kevlar composite. However, the maximum crack initiation energy per area occurred in a three-ply Kevlar/fourteen-ply Thornel/three-ply Kevlar composite. There was no single hybrid system that was best in all categories discussed.

Author Information

Helfinstine, JD

Corning Glass Works, Corning, N.Y.

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Details

Developed by Committee: D30

Pages: 375–388

DOI: 10.1520/STP26955S

ISBN-EB: 978-0-8031-4690-7

ISBN-13: 978-0-8031-4490-3

Charpy Impact of Unidirectional Graphite/Aramid/Epoxy Hybrid Composites

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