Journal Published Online: 01 January 2001
Volume 23, Issue 1

Effects of Resin Consolidation on the Durability of IM7/PETI-5 Composites



An experimental study was undertaken to investigate the mechanical response of the graphite fiber reinforced thermoplastic polyimide composite IM7/LaRC-PETI-5 for use in long term durability tests. Composite panels were prepared using unidirectional prepreg and regions of different resin consolidation were identified using a nondestructive ultrasonic technique. Specimens representing four different degrees of resin consolidation were tested at room temperature in tension, compression, and flexure in the as-received state, as well as isothermally exposed for 1500 h at 177°C, and isothermally exposed to a “hot/wet” environment (80°C, 90%+ relative humidity). Results showed that specimens tested in tension and compression had a higher dependence on resin consolidation than those tested in flexure. However, specimens tested in flexure showed a greater property degradation from environmental exposure due to a lack of resin consolidation.

Author Information

Veazie, DR
Clark Atlanta University, Atlanta, GA
Lindsay, JS
Clark Atlanta University, Atlanta, GA
Siochi, EJ
Lockheed Engineering and Sciences Company, Hampton, VA
Pages: 8
Price: $25.00
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Stock #: CTR10910J
ISSN: 0884-6804
DOI: 10.1520/CTR10910J