SYMPOSIA PAPER Published: 01 January 1978
STP34864S

Environmental Synergism and Simulation in Resin Matrix Composites

Source

Recent investigations have shown that absorbed moisture lowers glass transition of epoxy resin more than indicated by currently accepted models. The resulting glass transition value limits supersonic service conditions. This limitation results because exceeding glass transition causes the “thermal spike effect” and greatly reduces the strength of graphite-epoxy. These circumstances are reviewed and used to show the importance of realistically simulating airfield humidity and flight temperatures during testing. A new, economical approach is described for simulating realistic humidities for large structures.

Author Information

McKague, L
Mail Zone 2860, General Dynamics, Forth Worth, Tex.
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Details
Developed by Committee: D30
Pages: 193–204
DOI: 10.1520/STP34864S
ISBN-EB: 978-0-8031-4727-0
ISBN-13: 978-0-8031-0274-3