METHOD FOR PREDICTING REMAINING CREEP LIFE OF BAINITE STRUCTURE

摘要

[Problem] To provide a method for predicting the remaining creep life of a bainite structure. [Solution] This method for predicting remaining creep life involves: a step for generating ultrasonic resonance in a bainite structure by using an electromagnetic ultrasonic probe to contactlessly excite ultrasonic waves inside of the bainite structure; a step for measuring the resonance frequency of the ultrasonic resonance; a step for measuring the shift of ultrasonic waves at the resonance frequency; a step for calculating the speed of sound at the resonance frequency; a step for calculating a first damage rate of the bainite structure from the shift in the ultrasonic waves; a step for calculating a second damage rate of the bainite structure from the speed of sound; and a step for calculating a corrected damage rate of the bainite structure on the basis of the first damage rate and the second damage rate.