FRACTURE TOUGHNESS OF D6AC STEEL SHILLELAGH ROCKET MOTOR CASE
ARMY MATERIALS RESEARCH AGENCY WATERTOWN MA
Pagination or Media Count:
Burst tests and fracture toughness measurements on D6AC Shillelagh missile motor cases were carried out. The burst testing was done over a temperature range from room temperature down to -200 F. Results of these tests showed that the motor cases burst at approximately 250,000 psi hoop stress regardless of test temperature, and that all fractures were 100 percent shear. Fracture toughness measurements were made on cases containing machined and fatigue-cracked through-the-thickness notches, at room temperature and -65 F. The results of these measurements were in good agreement with previously obtained flat sheet data on similar materials.
- Metallurgy and Metallography
- Solid Propellant Rocket Engines