NEUBER'S RULE APPLIED TO FATIGUE OF NOTCHED SPECIMENS

Abstract

A method is presented for predicting the fatigue life of notched members from smooth specimen fatigue data. Inelastic behavior of the material at the notch root is treated using Neuber's rule which states that the theoretical stress concentration factor is equal to the geometric mean of the actual stress and strain concentration factors. This provides indices of equal fatigue damage for notched and unnotched members. Experimental results for notched aluminum alloy plates subjected to one or two levels of completely reversed loading are compared with predictions based on these indices. Measured notched fatigue lives and lives predicted from smooth specimens agree within a factor of two.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1967
Accession Number
AD0659550

Entities

People

  • J. Morrow
  • R. M. Wetzel
  • T. H. Topper

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Applied Mechanics
  • Classification
  • Contracts
  • Engineering
  • Fatigue Life
  • Materials
  • Mechanics
  • Metals
  • Modulus Of Elasticity
  • Security
  • Stress Concentration
  • Stress Strain Relations
  • Stresses

Readers

  • Spectroscopy.
  • Structural Health Monitoring of Composite Structures.