DAMAGE EVALUATION METHOD AND MAINTENANCE EVALUATION INDEX DECISION METHOD

摘要

A first measured value of a specific physical quantity at a target portion is correlated with a damage evaluation index to calculate a damage degree corresponding to the first measured value. The specific physical quantity is measured at least once at a position corresponding to the first measurement position in another time period having a different usage elapsed time from that of the first measurement, and these second and subsequent measured values are correlated with damage degrees calculated based on temporal changes corresponding to the second and subsequent measurements. A new damage evaluation index is approximately calculated based on a relationship between the first, second, and subsequent measured values and the damage degrees corresponding to the first, second, and subsequent measured values.

主权项

1. A damage evaluation method, which evaluates a damage degree of a target portion which changes over time in a structural member, comprising:
a first process of correlating a first measured value of a specific physical quantity at the target portion with a damage evaluation index indicating a relationship between the specific physical quantity and a damage degree which is generated based on a temporal change, and calculating a damage degree corresponding to the first measured value; a second process of measuring the specific physical quantity at least once at a position corresponding to the first measurement position in another time period having a different usage elapsed time from that of the first measurement, and correlating these second and subsequent measured values with damage degrees calculated based on temporal changes corresponding to the second and subsequent measurements; and a third process of approximately calculating a new damage evaluation index based on a relationship between the first, second, and subsequent measured values and the damage degrees corresponding to the first, second, and subsequent measured values.