3D ultrasonographic device

Abstract

A 3D ultrasonographic device includes: an ultrasonographic sensor having an ultrasonic transducer having a plurality of piezoelectric vibrators arranged in a matrix or array shape; a drive element selection unit for selecting an oscillation piezoelectric vibrator from the ultrasonic transducer; a signal detection circuit for receiving a reflection echo from a junction portion of an inspection object by the oscillated ultrasonic wave and detecting electric signal; a signal processing unit for processing the electric signal detected and correlating it to the mesh in the 3D image area of the inspection object, thereby generating 3D image data; and a display processing device for detecting the size / position of the molten hardened portion and the position / size of a welding defect portion from the intensity distribution of the 3D image date generated by the signal processing unit and displaying the detection result and the 3D image data from the signal processing unit.

Description

[0001] This application is a divisional application filed on April 25, 2005, with the application number "200580021267.8" and the name "three-dimensional ultrasonic inspection equipment". technical field [0002] 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 [0003] 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-...

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Problems solved by technology

[0010] 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

[0011] 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.

[0016] In addition, when the surface of the inspection object is uneven, it is difficult to make the mating shoe material come into close contact with the inspection object by merely filling the gap with a couplant

[0017] In the ultrasonic inspection equipment, when there is air bubble between the ultrasonic sensor and the inspection object, and thus there is a gap between them, it is difficult for the ultrasonic waves emitted from the ultrasonic sensor to enter the inspection object smoothly, and it is also difficult to receive the reflected echo smoothly. , so neither the ultrasonic wave nor the reflected echo can propagate normally, resulting in the problem that the detection performance is degraded, and at the same time, the three-dimensional imaging processing of the inner side of the inspection object cannot be performed correctly and smoothly.

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