Abstract
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.
Keywords:
composites, compression, environmental exposure, Flexure, moisture conditioning, nondestructive evaluation, polymer matrix conposites, resin consolidation, thermoplastics
Paper ID: CTR2310028
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Author Veazie DR, Lindsay JS, Siochi EJ
Title Effects of Resin Consolidation on the Durability of IM7/PETI-5 Composites
Symposium ,
Committee D30 on Composite Materials
