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Enhanced vertical eddy current detection probe

An eddy current detection probe and enhanced technology, used in measurement devices, instruments, scientific instruments, etc., can solve the problems of insignificant voltage change, small coupling degree, small mutual inductance, etc., and achieve the effect of improving measurement sensitivity and enhancing coupling strength.

Active Publication Date: 2022-05-17
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the magnetic induction lines generated by eddy currents cannot pass through the vertical coil 100, which makes the coupling degree between the vertical coil 100 and the workpiece plate 200 under test very small, so that the mutual inductance is very small and the voltage change is not obvious

Method used

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  • Enhanced vertical eddy current detection probe
  • Enhanced vertical eddy current detection probe
  • Enhanced vertical eddy current detection probe

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Embodiment Construction

[0021] Please check Figure 1 to Figure 4 , an enhanced vertical eddy current detection probe, which includes an excitation coil and a detection coil 10 and a conductive casing 20, the excitation coil and the detection coil 10 are coils wound along an axis parallel to the plane, and the conductive casing 20 can be formed by a conductive The two ends of the plate are bent and formed and an opening is formed at the opposite ends. The conductive shell 20 is arranged around the detection coil 10 and the end face of the opening can be in electrical contact with the surface of the workpiece 30 to be tested. The conductive shell 20 is in contact with the detection coil 10. The coils 10 are insulated from each other.

[0022] In order to maximize the coupling rate, the conductive casing 20 is tightly wrapped around the detection coil 10 to form a coaxial and coplanar relationship with the detection coil 10 .

[0023] The end surface of the opening of the conductive shell 20 is a smoo...

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Abstract

The invention discloses an enhanced vertical eddy current detection probe, which includes an excitation coil and a detection coil, the excitation coil and the detection coil are coils wound along an axis parallel to the plane; The shell can be formed by bending two ends of a conductive plate and an opening is formed at the opposite ends of the bend. The conductive shell is arranged around the body of the detection coil and the end face of the opening can be in electrical contact with the surface of the workpiece to be tested. The conductive shell and the detection The coils are insulated from each other. It has the following advantages: the coupling degree between the probe and the workpiece to be measured is improved, and the measurement sensitivity is improved.

Description

technical field [0001] The invention relates to an enhanced vertical eddy current detection probe. Background technique [0002] All kinds of conductive materials and products will have defects such as cracks and pitting corrosion during the production process. These defects not only affect the appearance, but also reduce the corrosion resistance and wear resistance of the material. Therefore, timely diagnosis of materials is an important measure to ensure the normal and safe use of products. Eddy current testing is one of the mainstream non-destructive testing methods at present, and it has the characteristics of simple operation and simple structure. [0003] In the detection of flat materials, the coils in the eddy current probe can be divided into parallel coils and vertical coils according to the position of their axes. A vertical coil is a coil wound along an axis parallel to the plane, and the direction of the induced eddy current in the material directly below the ...

Claims

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Application Information

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IPC IPC(8): G01N27/90
CPCG01N27/9006
Inventor 黄澜涛邹嘉豪陈桂鹏张靖周一涵
Owner XIAMEN UNIV