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Keywords:

  • Fatigue;
  • Cold Working;
  • Cold Expansion of Holes;
  • Ring Indentation;
  • Wöhler Diagram

Abstract

The article deals with the fatigue life of plates with hole made of aluminum alloy. Specifically, the combined effect of cold working expansion and ring indentation on improved fatigue life performance was investigated. Multiple fatigue tests were performed to determine the cycles to failure and the corresponding Wöhler diagram. Experimental results were compared with those of nontreated specimens. The conclusion was that cold working expansion and indentation create a delay on crack formation and fatigue failure.