METHOD OF PREDICTING CRACK GROWTH AND INFORMATION PROCESSING DEVICE THEREFOR

摘要

A method of predicting growth of a crack in a member includes memorizing, for each portion on the member, stress distribution Δσ(a) in the depth direction obtained in the case that no crack is present, a relationship between depth of growing cracks and creep contribution, and a relationship between creep contribution and parameters C and in of the Paris's law, receiving from a user an indication of a certain portion on the member, acquiring the stress distribution Δσ(a) in the depth direction for the certain portion, acquiring a creep contribution at the depth of a growing crack for the certain portion, from the relationship between depth of cracks and creep contribution memorized for the certain portion, and acquiring parameters C and in corresponding to the acquired creep contribution, from the relationship between creep contribution and parameters C and m of the Paris's law memorized for the certain portion.