ENVIRONMENTAL EFFECTS ON FIBER-REINFORCED ORGANIC COMPOSITES
A study of the effects of a marine environment on fiber-reinforced organic matrix composites has been conducted at the David Taylor Naval Ship Research and Development Center (DTNSRDC). In this investigation, various composties were subjected to extended-immersion, high-speed water flow, and flammability tests. Results of the DTNSRDC study showed, first of all, that high-quality (low void content) glass-fiber-reinforced or graphite-fiber-reinforced epoxy composites will retain over 90 percent of their initial strength after extended immersion in seawater. On the other hand, high-speed water flow tests showed that organic matrix composites are degraded by cavitation erosion. However, the study concluded that the erosion resistance of these composites can be improved through the use of elastomeric or thin metallic overlays. In other tests, polyimide resin matrix composites exhibited the greatest resistance to flammability and evolution of smoke. In general, polyester and epoxy matrices had poor resistance to flammability and generated large quantities of dense smoke.
Navy Technology Transfer SheetNaval Surface Weapons Center
Dahlgren, VA USA 22448
- Publication Date: 1980-9
- Pagination: n.p.
- TRT Terms: Cavitation erosion; Composite materials; Fiber reinforced materials; Fiberglass; Flammability; Materials selection
- Old TRIS Terms: Fiberglass reinforced materials; Materials evaluation
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00323290
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 6 1981 12:00AM