LASER ULTRASONIC IMAGING METHOD AND LASER ULTRASONIC IMAGING DEVICE FOR ROTATIONAL STRUCTURE

摘要

The present invention relates to an integrity evaluation system which is capable of visualizing the interaction between a damaged portion and an ultrasonic procedure such that field workers can confirm information on the location and the size or the like of the damage in an easy and intuitive manner, thereby efficiently managing a rotational structure such as a turbine blade, and the integrity evaluation system comprises: an ultrasonic generation system which irradiates pulse laser on one side of the rotational structure so as to generate ultrasonic waves; a pulse laser control system for adjusting a time for irradiating the pulse laser; an ultrasonic measurement system for measuring ultrasonic waves generated from the other side of the rotational structure; and a damage detection system which visualizes a measured ultrasonic signal and automatically provides information on the existence of damage and the position and severity of the damage of the rotational structure.