AXIAL-LOAD FATIGUE TESTS ON NOTCHED AND UNNOTCHED SHEET SPECIMENS OF 61S-T6 ALUMINUM ALLOY, ANNEALED 347 STAINLESS STEEL, AND HEAT-TREATED 403 STAINLESS STEEL

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Abstract:

Axial-load fatigue tests a stress ratio of zero were performed on notched and unnotched sheet specimens of 61S-T6 aluminum alloy and 347 and 403 stainless steels. Special emphasis was placed on tests at high stress levels producing failures in small numbers of cycles. It was found that the stress- concentration factors effective in fatigue of notched specimens were somewhat less than theoretical elastic values at low stresses and were approximately equal to one at the ultimate strength. The minimum life to failure at stresses near the ultimate strength was drastically reduced with increasing stress-concentration factor.

Author(s):
Hardrath, Herbert F. ; Landers, Charles B. ; Utley, Jr, Elmer C.
Author Organization(s):
NATIONAL AERONAUTICS AND SPACE ADMIN LANGLEY RESEARCH CENTER HAMPTON VA
Descriptive Note:
Technical note
Pagination:
0035

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NACA-TN-3017
Monitor Series:
NACA
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
Air Platforms
Descriptor(s):
*STAINLESS STEEL, *FATIGUE TESTS(MECHANICS), *ALUMINUM ALLOYS, CYCLES, STRESS CONCENTRATION, FATIGUE, VALUE, NUMBERS, AXIAL LOADS, ELASTIC PROPERTIES, HIGH RATE, STRESSES, SHEETS
Field(s)/Group(s):
Metallurgy and Metallography, Test Facilities, Equipment and Methods
Keyword(s):
STEEL 1050
Report Date:
1953 Oct 01