DIAGNOSIS METHOD OF STRUCTURE AND DIANOSIS SYSTEM

摘要

The present invention relates to a diagnosis method for a structure and a diagnosis system. In the diagnosis method for a structure, a sensing unit receives an ultrasonic signal generated from a target structure by a laser beam. A control unit calculates a number of total peak points in an ultrasonic frequency spectrum generated based on the ultrasonic signal, and calculates the number of threshold peak points corresponding to threshold values or more among the number of total peak points. The control unit determines damage to the target structure based on the number of the total peak points and the number of the threshold peak points. According to the embodiments of the present invention, the diagnosis method for a structure improves accuracy of diagnosing the structure by determining damage to the target structure using the number of total peak points and the number of threshold peak points in a frequency spectrum of the ultrasonic signal generated in the target structure.