Fatigue Crack Propagation in an Explosion-Bonded 2024 Aluminum Plate.

Abstract

ION AND A MICROHARDNESS TRAVERSE WERE ALSO CONDUCTED AT THE BOND ZONE TO BETTER EVALUATE THE DIFFERENT BOND CONDITIONS. A fracture mechanics approach was used to investigate the effect of explosion bonding on fatigue crack growth. Crack growth rates were determined at increasing values of stress intensity factor. Specimens were obtained from areas of the plate which were determined to be bonded with few defects and from areas where it was determined that voids were present at the bond zone. Cracks were made to propagate perpendicular to the bonding direction as well as in the bonding direction and opposing the bonding direction. The test results show crack growth rates on the low side of the range as reported in the literature, with no apparent effect due to either void content or bonding direction. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1972
Accession Number
AD0756423

Entities

People

  • John C. Scalzo

Organizations

  • United States Army Research Laboratory

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Continuum Mechanics
  • Crack Propagation
  • Cracks
  • Explosions
  • Fracture (Mechanics)
  • Intensity
  • Literature
  • Mechanical Phenomena
  • Mechanical Properties
  • Mechanics
  • Microhardness
  • Physical Properties
  • Physics
  • Stress Intensity Factors

Readers

  • Materials Science (Mechanical Engineering).
  • Surface Coatings Technology.