Injection repair of composite delaminations
- Naval Air Warfare Center, Warminster, PA (United States). Aircraft Division
Composites are used extensively in Naval aircraft for increased strength and weight savings. These aircraft contain many composite access panels that require frequent removal for servicing equipment. Often during removal and replacement the edges of these panels are damaged from prying the panel off, impacting the edge of the panel, and excessive fastener torque. A proposed method for repairing these panels is to inject resin into the delaminations. The type of resin that can be used for repair must be ambient storable in the navy environment, have a low injection viscosity, and restore the structural integrity. Developmental efforts at the Naval Air Warfare Center, Aircraft Division, Warminster, Pennsylvania supporting naval aircraft in the fleet led to the evaluation of four injection resins for delamination repair. The resins, including Dexter Hysol EA 9390, Dexter Hysol EA9396, Magnolia Plastics Magnobond 108-134, and Defense Research Establishment Pacific (DREP) Delamination Repair Epoxy, were tested to determine compatibility with repair procedures, mechanical strength, and thermal stability in a 180 F wet environment. Results of the evaluation for the repair materials are presented.
- OSTI ID:
- 237751
- Report Number(s):
- CONF-9510177--; ISBN 1-56676-376-2
- Country of Publication:
- United States
- Language:
- English
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