MATERIAL - 7079-T651 ALUMINUM ALLOY SHORT TRANSVERSE FATIGUE PROPERTIES - DETERMINATION OF

Abstract

A 4-1/2-in. thick Alcoa plate was sectioned to obtain short transverse tensile and fatigue specimens. The longitudinal, long transverse and short transverse tensile properties of the plate were obtained and found to exceed the minimum values specified by FMS-0108 for 4.001 to 4.500 in. plate. Both the unnotched, K sub T equals 1.1, and notched K sub T equals 3.56 fatigue specimens were tested with a stress ratio of 0.1. A complete S/N curve was prepared from the data obtained for each type specimen. The endurance limit of the unnotched condition was at 30,000 psi or about 43% of the short transverse ultimate tensile strength while for the notched condition it was 10,000 psi or 14% of the short transverse ultimate tensile strength. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1962
Accession Number
AD0272259

Entities

People

  • J.f. Hildebrand

Organizations

  • General Dynamics

Tags

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Materials
  • Mechanical Properties
  • Physical Properties
  • Tensile Properties
  • Tensile Strength
  • Transverse

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy