Three-dimensional ultrasonic inspection device

Abstract

A three-dimensional ultrasonic inspection apparatus includes: a sensing device for ultrasonic inspection including an ultrasonic sensor as a transducer, in which a plurality of piezoelectric vibrators are disposed in a matrix or an array; a drive element selecting unit for selecting and driving a piezoelectric vibrator for producing an ultrasonic wave among the ultrasonic transducer; a signal detecting circuit for detecting the electric signal of the reflected echo by receiving the reflected echo from the joined area; a signal processing unit for subjecting the electric signal to signal processing and generating three-dimensional imaging data by causing the electric signals to correspond to mesh elements in a three-dimensional imaging region of the object to be inspected; and a display processing device for displaying the detection results and three-dimensional image data from the signal processing unit, while detecting the size and the position of the molten-solidified portion, and the size and the position of the weld defect of the joined area, from the intensity distribution of the three-dimensional imaging data generated by the signal processing unit.

Description

technical field [0001] The present invention relates to a three-dimensional ultrasonic inspection apparatus for non-destructively inspecting the internal structure of an inspection object, the state of a joint region, and a defect state using ultrasonic waves, and more particularly, to a three-dimensional ultrasonic inspection apparatus including a sensing device for ultrasonic inspection , such a three-dimensional ultrasonic inspection apparatus is used as an ultrasonic imaging apparatus that three-dimensionally visualizes the state of a welded portion of an inspection object and the state of a welding defect. Background technique [0002] An example of a technique for nondestructive inspection of the state of welded portions and the state of welded defects in joint regions between plate-like structures that are inspection objects is an ultrasonic testing technique. [0003] As an example of an ultrasonic inspection apparatus employing an ultrasonic testing technique, an ul...

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Problems solved by technology

[0009] 1. Since the internal inspection of the inspection object is performed by observing the ultrasonic image formed by imaging processing, it is difficult to objectively and quantitatively inspect the state of the welded part and the state of the welding defect with high accuracy

[0010] 2. It is difficult to quantitatively and accurately automatically determine the presence or absence of abnormalities from the ultrasonic image obtained by imaging the inner side of the inspection object, indicating the state of the welded part and the state of the welded defect.

[0015] In addition, when the surface of the inspection object is uneven, it is difficult to make the mating shoe material come into close conta...

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