PROBLEM TO BE SOLVED: To highly accurately estimate the fatigue damage degree of a structure before a sensor is mounted, in consideration of the environment in which the structure is actually placed.;SOLUTION: The cumulative fatigue damage-degree estimation system includes: a damage-degree calculation unit 12 for calculating the fatigue damage degree of a structure using measurement data 2, 3, and 4 acquired by first measuring means; a response surface generation unit 13 for defining the relationship between the fatigue damage degree and data 5 and 9 based on second measuring means after the start of the measurement by the first measuring means; and a damage degree estimation unit 17 for calculating the fatigue damage degree estimation value until the start of the measurement by the first measuring means, using a response surface and data based on the second measuring means that has been acquired before the start of the measurement by the first measuring means.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT
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