Patent ID: 7913571

Claim:
An apparatus for estimating a residual life of a blasting vessel in which an object to be treated is exploded, comprising: means for quantitatively evaluating the degree of fatigue damage of the blasting vessel upon each explosion; and, means for calculating an estimated value of residual life of the blasting vessel on the basis of the evaluation, wherein the means for quantitatively evaluating the degree of fatigue damage of the blasting vessel includes: a strain measuring apparatus for measuring a high-frequency repetitive strain caused in the blasting vessel due to the explosion upon each of explosions, the apparatus being set in the blasting vessel; cumulative fatigue calculating means for analyzing strain waveform data obtained with the strain measuring apparatus in each of the explosions to calculate cumulative degree of fatigue damage due to a repetitive load at a high frequency, which is applied to the blasting vessel by the explosion, at the current explosion; and cumulative value storage means for storing a cumulative value of the cumulative degree of fatigue damage from start of use.