Effect of Tension-Compression Cycling on Fatigue Crack Growth in High-Strength Alloys

Abstract

Virtually all of the fatigue crack propagation data reported in the literature for structural alloys are generated under simple zero-tension cycling. The direct application of this data to problems involving large welded structures subjected to operating stress cycles approaching fully-reversed tension-compression is questionable. The present study shows that the compression portion of fully-reversed tension-compression cycling can contribute substantially to fatigue crack growth rates in plate-thickness, medium-to-high- strength alloys. Data from several alloys show a 50 percent increase in fatigue crack growth rates due to tension-compression cycling. The implications of these findings and methods for applying the results of this study are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 04, 1971
Accession Number
AD0718321

Entities

People

  • Thomas W. Crooker

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Amplitude
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Failure Mode And Effect Analysis
  • Ferrium
  • Fracture (Mechanics)
  • High Strength Alloys
  • Iron Alloys
  • Mechanics
  • Military Research
  • Steel
  • Stress Intensity Factors
  • Stresses
  • Tensile Properties

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.