High Frequency Fatigue of Turbine Blade Material.

Abstract

This increased fatigue crack growth rate at elevated temperature due to high frequency loading is examined. The crack growth rate is found to depend upon major cycle stress intensity factor, hold-time and minor cycle frequency, and amplitude for a given temperature. The elevated tests also demonstrate a transition from creep crack growth dominant to fatigue crack growth dominant at values of minor cycle amplitude above a threshold value. A model for determining the crack growth rate is developed.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1982
Accession Number
ADA124585

Entities

People

  • Alexander M. Brown
  • Richard C. Goodman

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Crack Propagation
  • Cracks
  • Drug Abuse
  • Dynamic Loads
  • Fracture (Mechanics)
  • Gas Turbines
  • Governments
  • Load Cells
  • Materials
  • Materials Laboratories
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Turbine Blades
  • Turbines
  • Voltage

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).