Retardation of Fatigue Crack Propagation Due to Additional Holes or Indentations in Plate Specimens

Abstract

This paper is concerned with the beneficial effects due to additional holes or indentations. Two indentations facing each other with the tip of a crack is especially effective in retardation of crack propagation. The effects of the indentations can be estimated approximately from the existence of residual stresses produced by the indentations. © 1985, The Japan Society of Mechanical Engineers. All rights reserved.