Accession Number:

AD0601362

Title:

LOW-CYCLE FATIGUE OF MATERIALS FOR SUBMARINE CONSTRUCTION.

Descriptive Note:

Research and development rept.,

Corporate Author:

NAVY MARINE ENGINEERING LAB ANNAPOLIS MD

Personal Author(s):

• Gross,M. R.

Report Date:

1963-02-14

Pagination or Media Count:

56.0

Abstract:

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

Descriptors:

• *SUBMARINE HULLS
• FATIGUE(MECHANICS)
• STEEL
• NICKEL ALLOYS
• ALUMINUM ALLOYS
• COPPER ALLOYS
• PLASTIC PROPERTIES
• WELDS
• CORROSION
• SEA WATER
• FAILURE(MECHANICS)
• LOAD DISTRIBUTION
• PRESSURE VESSELS
• LIFE EXPECTANCY(SERVICE LIFE)

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE