Accession Number:

AD0272259

Title:

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

Descriptive Note:

Corporate Author:

GENERAL DYNAMICS/FORT WORTH TEX

Personal Author(s):

Report Date:

1962-01-15

Pagination or Media Count:

1.0

Abstract:

A 4-12-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 SN 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE