SYMPOSIA PAPER Published: 01 January 1981

Experimental Study of Compression-Compression Fatigue of Graphite/Epoxy Composites


The objective of the study is to determine the static compression and R = 10 constant frequency compression-compression fatigue properties of Hercules AS/3501-6 tape graphite/epoxy composites. Environmental conditions selectively used are: (1) room temperature dry, (2) room temperature wet (1.1 percent by weight), (3) 103.3°C (218°F) dry, and (4) 103.3°C (218°F) wet (1.1 percent by weight). Ply orientations studied are [0]nt, [90]nt, [±45]ns, and [(±45)5/016/904]c. All fatigue testing is at room temperature with subsequent residual strength testing on survivors at 103.3°C (218°F). New test methods are developed. Degradation is observed in the 1.25 million cycle endurance limit stresses and the compressive residual strength values compared with static properties.

Author Information

Grimes, GC
Structural Mechanics Research Department, Northrop Corp., Hawthorne, Calif.
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Developed by Committee: D30
Pages: 281–337
DOI: 10.1520/STP29316S
ISBN-EB: 978-0-8031-4800-0
ISBN-13: 978-0-8031-0700-7