Ultrasonic phased array probe system used in transversal flaw detection in tubular material or rod material

A technology of ultrasonic phased array and phased array probe, which is applied in the direction of material analysis, measuring device, and material analysis using sound wave/ultrasonic wave/infrasonic wave, which can solve the problem of reducing the signal-to-noise ratio of transverse wound detection, missed detection, and acoustic echo Low energy and other issues, to avoid energy loss, eliminate energy loss, improve the effect of signal-to-noise ratio

Active Publication Date: 2015-05-27
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the energy loss will be caused when the sound wave passes through the wedge, the echo energy of the sound wave on the transverse wound is small, which reduces the signal-to-noise ratio of the transverse wound detection, and even causes missed detection and misjudgment

Method used

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  • Ultrasonic phased array probe system used in transversal flaw detection in tubular material or rod material
  • Ultrasonic phased array probe system used in transversal flaw detection in tubular material or rod material
  • Ultrasonic phased array probe system used in transversal flaw detection in tubular material or rod material

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Embodiment 1

[0025] In the above-mentioned phased array probe, the probe chips are evenly distributed on the side of a circular platform around the pipe or rod, that is, all the chips in the probe are evenly distributed in the circumferential direction of the pipe or rod, covering a 360-degree scanning range. However, in the actual manufacturing process of the phased array probe, it is difficult to manufacture a complete frustum of a cone due to technical difficulties. For this reason, the phased array probe can be made into two phased array probes, and each phased array probe is a semi-circular table structure. For scanning detection, using two such semi-circular table structures can realize 360-degree full-range scanning detection of pipes or bars, see image 3 . In order to eliminate the scanning blind area between the probes of each semi-circular table, each semi-circular table should be made to have a scanning range slightly larger than 180 degrees, that is, the central angle formed ...

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Abstract

The invention provides an ultrasonic phased array probe system used in transversal flaw detection in tubular materials or rod materials, comprising: a plurality of phased array probes, wherein the phased array probes are formed into a circular truncated cone surrounding a periphery of the tubular material or the rod material. The axis of the circular truncated cone is coincided with the axis of the tubular material or the rod material. An included angle between each chip on the phased array probes and the axis of the tubular material or the rod material is [alpha], and at the same time, an incidence angle of an acoustic beam generated from each chip to a surface of the tubular material or the rod material is [alpha]. The angle [alpha] is formed at a zone between a first critical angle and a second critical angle, in which only is a transverse wave formed in the tubular material or the rod material. The chips are uniformly distributed on the circular truncated cone. When two phased array probes are employed, a formed central angle of each phased array probe relative to the axis is 180 degrees.

Description

technical field [0001] The invention relates to the technical field of ultrasonic detection of pipes or bars, in particular to an ultrasonic phased array probe system for detecting transverse damage of pipes or bars. Background technique [0002] Ultrasonic phased array testing technology is an ultrasonic nondestructive testing technology developed in recent years. This technology can improve the detection speed and the signal-to-noise ratio of the detection signal, and has the characteristics of fast, reliable and accurate. The most important feature of ultrasonic phased array technology is that it adopts the method of ultrasonic array emission and array reception, and controls the shape and direction of the sound beam by controlling the delay and amplitude of the excitation signals of each array element on the array, so as to realize dynamic focusing, scanning and detection. . The emergence of ultrasonic phased array technology has improved the accuracy and speed of ultra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/24
Inventor 张碧星谭宜涛师芳芳吴先梅
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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