LOW-CYCLE FATIGUE OF MATERIALS FOR SUBMARINE CONSTRUCTION.
Research and development rept.,
NAVY MARINE ENGINEERING LAB ANNAPOLIS MD
Pagination or Media Count:
Materials for submarine construction were investigated to determine their low-cycle flexural fatigue behavior. Both ferrous and nonferrous materials, including five steels with yield strengths of 40,000 to 230,000 psi, five nickel-base, six aluminum-base and three copper-base alloys were used in the study. Comparisons on the basis of three parameters plastic-strain range, total-strain range, and nominal reversed stress, were made of the effects of mechanical notches, cycle pattern, weldments, and salt-water corrosion. It is concluded that the relationship between total-strain range and life is similar for all the materials investigated and that it offers a more general and practical approach to design than plastic-strain range or nominal reversed stress. Author