SAFETY MONITORING SYSTEM OF NUCLEAR EQUIPMENT WITH INTERGRATING SYSTEM OF LASER ULTRASONIC AND SHEAROGRAPHY

摘要

Disclosed is a safety diagnosing system for a nuclear plant pipe integrated with a laser ultrasonic wave and a shearography machine. The safety diagnosing system for a nuclear plant pipe integrated with a laser ultrasonic wave and a shearography machine according to an embodiment of the present invention comprises: a pulse laser oscillator to oscillate a pulse laser beam emitted onto a target object to generate an ultrasonic wave; a first light division unit to divide the pulse laser beam into a first laser beam and a second laser beam before the pulse laser beam is emitted onto the target object; a CCD camera unit to receive the first laser beam reflected from the target object to acquire deformation information of the target object through a shearography machine; a continuous wave oscillator to oscillate a continuous wave laser beam to an area identical to an area onto which the second laser beam is emitted to detect the ultrasonic wave; a laser interferometer unit to detect the ultrasonic wave propagating inside the target object in accordance with a change in light intensity caused by interfering the second laser beam reflected from the target object and the continuous wave laser beam; and an information processing unit to measure a location, a size, and a depth of a defect of the target object based on the deformation information acquired by the CCD camera unit and ultrasonic wave information acquired by the laser interferometer unit.