Fine acoustic beam ultrasonic probe and design method

A design method, ultrasonic technology, applied in the direction of material analysis, measuring devices, and instruments using sound waves/ultrasonic waves/infrasonic waves, which can solve problems such as low detection accuracy and low detection efficiency of focusing probes, and achieve simple structural design and good application prospects And promote the effect of using value, high defect location and quantitative accuracy

Pending Publication Date: 2021-06-11
SICHUAN ENG TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned technical problems, the object of the present invention is to provide a thin sound beam ultrasonic probe, which can effectively solve the technical problem of low detection accuracy of conventional ultrasonic probes, and solve the technical problem of low detection efficiency of existing focusing probes. Determination of defect area or indicated length is also suitable for detecting internal defects of thin-walled parts and near-surface defects of medium-thickness parts. It has the advantages of high-precision detection and high detection efficiency

Method used

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  • Fine acoustic beam ultrasonic probe and design method
  • Fine acoustic beam ultrasonic probe and design method

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Embodiment 1

[0047] Please refer to Figure 1 to Figure 7 As shown, the present embodiment provides a kind of thin sound beam ultrasonic probe, and this ultrasonic probe comprises probe connector 10, the probe housing 50 that is connected with probe connector 10 and the cable wire 2 that is positioned at probe housing 50, can transmit and receive Ultrasonic piezoelectric element and combined acoustic lens; wherein the cable 2 is connected between the probe joint 10 and the piezoelectric element capable of emitting and receiving ultrasonic waves, for transmitting high-frequency alternating electric pulses to the piezoelectric element; combined acoustic lens Installed on the bottom of the piezoelectric element, it is used to receive and converge the ultrasonic beam generated by the piezoelectric element and control the propagation direction of the ultrasonic wave, so that the ultrasonic sound beam forms an ultrasonic sound beam that is first focused and then propagates in parallel.

[0048] ...

Embodiment 2

[0070] Embodiment two is basically the same as embodiment one, and its difference is: combine Figure 8 and Figure 9 As shown, the present embodiment provides a thin sound beam ultrasonic probe. The piezoelectric chip 3 of this embodiment is a plane and the other side is a different-surface structure with a concave spherical surface. Combined with the structural design of the piezoelectric chip 3, this embodiment Embodiment The combined acoustic lens includes a central acoustic lens 402 and a lower acoustic lens 403 bonded together, wherein the side of the lower acoustic lens 403 connected to the central acoustic lens 402 is a concave spherical surface and the other side of the lower acoustic lens 403 is a plane The side where the central acoustic lens 402 is connected to the piezoelectric wafer 3 has a first convex spherical surface adapted to the concave spherical surface of the piezoelectric wafer 3 and is connected to the piezoelectric wafer 3 through the first convex sph...

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Abstract

The invention discloses a fine acoustic beam ultrasonic probe and a design method, and relates to the technical field of nondestructive testing, the probe comprises a probe joint, a probe shell, a cable, a piezoelectric element and a combined acoustic lens, wherein the cable is connected between the probe connector and the piezoelectric element capable of transmitting and receiving ultrasonic waves and is used for conducting high-frequency alternating electrical pulses to the piezoelectric element; the combined acoustic lens is mounted at the bottom of the piezoelectric element and is used for receiving and converging the ultrasonic sound beams generated by the piezoelectric element and controlling the propagation direction of the ultrasonic waves, so that the ultrasonic sound beams form ultrasonic sound beams which are firstly focused and then propagated in parallel; and by implementing the technical scheme, the technical problem that a conventional ultrasonic probe is low in detection precision can be effectively solved, the technical problem that an existing focusing probe is low in detection efficiency can also be solved, the defect area or the indication length can be accurately measured, and the method is suitable for detecting internal defects of thin-wall parts and near-surface defects of medium-thickness parts. The method has the advantages of high detection precision and high detection efficiency.

Description

technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to a thin sound beam ultrasonic probe and a design method. Background technique [0002] Ultrasonic flaw detection is a common non-destructive flaw detection method that uses ultrasonic waves to inspect internal defects of components. Detection, positioning, evaluation, and diagnosis are widely used in a wide range of fields, among which piezoelectric ultrasonic probes are the most commonly used type. [0003] There are many kinds of conventional piezoelectric ultrasonic probes and different uses, but their structures are basically similar; they are generally composed of wafers, damping blocks, protective films, high-frequency cable inserts and housings; but with the development of science and technology, in industrial production The requirements for product defect location and quantification are increasing day by day, especially for important equipment and construct...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01N29/24
CPCG01N29/2443G01N2291/023
Inventor曾舟苗景国郭伟吴代建王欢
OwnerSICHUAN ENG TECHN COLLEGE