A Stress-Strain-Time Model (SST) for High-Temperature, Low-Cycle Fatigue.

Abstract

A Stress-Strain-Time Model (SST) has been developed to predict high-temperature, low-cycle fatigue life. The model states that the life can be predicted by three variables--stress, strain, and time. These three variables are combined in a power-law equation to predict the life. The stress parameter accounts for mean stress effects. The strain parameter accounts for time-independent fatigue damage, and the time parameter accounts for the time dependence of fatigue life. High-temperature, low-cycle fatigue data for several alloy systems are correlated to within a factor of 2.1, and data are predicted to within a factor of 2.6 using the SST Model. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1979
Accession Number
ADA078829

Entities

People

  • Henry L. Bernstein

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Databases
  • Equations
  • Fatigue Life
  • Frequency
  • High Temperature
  • Materials
  • Plastic Explosives
  • R-Banding
  • Stainless Steel
  • Stresses
  • Tensile Stress
  • Time Dependence

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Structural Health Monitoring of Composite Structures.