APPARATUS OF IN-PLANE OR OUT-OF-PLANE ULTRASONIC PROPAGATION IMAGING IN FREQUENCY DOMAIN AND METHOD THEREOF

摘要

The present invention relates to an in-plane or out-of-plane ultrasonic wave radiographic imaging apparatus and a method thereof, wherein the frequency-domain in-plane ultrasonic wave imaging apparatus includes: a laser beam irradiator for generating and irradiating a pulsed laser beam at a predetermined irradiation repetition rate; A beam splitter for splitting the beam into a plurality of pulsed laser beams and delivering the beams to a plurality of areas on an outer surface of the object, a laser mirror scanner for reflecting the transmitted pulsed laser beams to a plurality of irradiation points on the plurality of areas; When the reflected pulsed laser beam is transmitted through the outer surface and the ultrasonic wave is generated by the transmitted pulsed laser beam and propagates in the in-plane of the object, the propagated ultrasonic wave is converted into a contact or non-contact laser ultrasonic sensor. Receive in pitch-catch mode and time-amplitude received ultrasound A reception processor for real-time processing of the signal, frequency-converting the processed signal, reconstructing the frequency-converted signal into a signal of a three-dimensional data structure that is a signal of frequency to amplitude at the plurality of irradiation points, and reconstructing three-dimensional An image processor for generating and outputting an in-plane ultrasonic frequency division image by dividing a signal having a data structure by frequency, and controlling the laser beam irradiation unit to generate a pulsed laser beam at the predetermined irradiation repetition rate, A mirror scanner is configured to control the mirror scanner to reflect the pulsed laser beam to a plurality of irradiation points at predetermined intervals.