Ultrasonic inspection method and ultrasonic inspection device

摘要

An ultrasonic inspection method and an ultrasonic inspection device allow three-dimensional inspection data and three-dimensional shape data to be appropriately positioned on a display screen and allow a defect echo and a shape echo to be quickly identified even when information on the relative positions of a probe and an object to be inspected is not provided. The ultrasonic inspection data that is generated from the waveforms of ultrasonic waves received by an ultrasonic probe is compared with a plurality of ultrasonic propagation data pieces calculated by a ray tracing method on the basis of the three-dimensional shape data on an object to be inspected. The position of the three-dimensional inspection data or the three-dimensional shape data is moved relative to the other data position on the basis of the comparison results, thereby displaying the three-dimensional inspection data and the three-dimensional shape data while overlapping each other.

主权项

1. An ultrasonic inspection method comprising the steps of:
preparing an ultrasonic probe having a plurality of piezoelectric elements; scanning an inspection object with the ultrasonic probe having the plurality of piezoelectric elements according to a scanning method; receiving ultrasonic waves from the inspection object with the ultrasonic probe having the plurality of piezoelectric elements; generating three-dimensional ultrasonic inspection data from waveforms of the ultrasonic waves received by the ultrasonic probe; calculating a plurality of ultrasonic propagation data on the basis of three-dimensional shape data of the inspection object and the scanning method by sequentially changing ultrasonic wave incident points and ultrasonic wave incident directions; comparing the three-dimensional ultrasonic inspection data with the plurality of ultrasonic propagation data to match a combination of the three-dimensional ultrasonic inspection data with a portion of the plurality of ultrasonic propagation data; and displaying the three-dimensional ultrasonic inspection data and the three-dimensional shape data in such a manner as to move on a display screen a position at which to display the three-dimensional ultrasonic inspection data or the three-dimensional shape data on the basis of the combination of the three-dimensional ultrasonic inspection data and the portion of the ultrasonic propagation data which match each other.