Abstract
Maximum stress intensity factor (SIF) range of an inner-surface circumferential crack, in a finite-length thick-walled cylinder with rotation-restrained edges, under thermal striping was studied. Results showed that the maximum SIF range under thermal striping for a temperature range 2ΔT is smaller than maximum SIF range under step temperature change of 2ΔT. These results suggest the fact that characteristics obtained for step temperature change (a tentative value of the threshold stress intensity range ΔK_<th>, was assumed together with the Paris law), such as the existence of an upper limit for the normalized crack growth depth independent of the cylinder material, are valid for thermal striping.
