METHOD OF PREDICTING CRACK GROWTH IN CAST STEEL WELD ZONE

摘要

PROBLEM TO BE SOLVED: To provide a method of predicting crack growth in a cast steel weld zone, for more accurately predicting crack growth in a cast steel weld zone or crack growth such as remaining life of a casting weld zone.SOLUTION: The method of predicting crack growth in a cast steel weld zone includes: an analysis graph generation step of generating an analysis graph indicating growth tendency of a case where a crack occurs on the outer surface of a cast steel weld zone by creep crack growth analysis; a measurement step of measuring the depth of the crack occurring in the cast steel weld zone at a plurality of time points different from each other; and a corresponding graph generation step of generating a corresponding graph corresponding to the analysis graph as a graph for predicting crack growth on the basis of the measurement values measured at the plurality of time points different from each other in the measuring step.