Optimization of pin bearing joint strength for segmented graphite/epoxy filament wound case in Space ShuttleAn attempt is made to demonstrate the feasibility of a composite joint in a segmented, graphite/epoxy filament-wound composite case for the Space Shuttle's Solid Rocket Motors. The joint's required ultimate line load is of the of 82,000 lb/in. By optimizing composite layup, and the ratios of pin diameter/specimen thickness, edge distance/pin diameter, and specimen width/pin diameter, a pin bearing joint strength of 85 ksi was obtained. Double pin testing disclosed that the pin close to the composite joint carries a higher load than the outboard pin. Pin bearing strength is noted to vary with matrix resin system.
Document ID
19850055263
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Munjal, A. K. (Morton Thiokol Brigham City, UT, United States)
Wilks, R. K. (Morton Thiokol, Inc. Brigham City, UT, United States)