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

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1953
Accession Number
AD0017759

Entities

People

  • Charles B. Landers
  • Elmer C. Utley Jr.
  • Herbert F. Hardrath

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Aircrafts
  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Axial Loads
  • Creep
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Mechanical Properties
  • Stainless Steel
  • Static Tests
  • Stress Concentration
  • Stress Strain Relations
  • Stresses
  • Tensile Strength
  • Tensile Stress

Readers

  • Graph Algorithms and Convex Optimization.
  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.