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A Design Method of Electromagnetic Ultrasonic Excitation Probe

A technology of electromagnetic ultrasonic and design method, which is applied in the generation of ultrasonic/sonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, measurement devices, etc., and can solve problems such as impurity of ultrasonic mode.

Active Publication Date: 2017-04-05
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a design method of an electromagnetic ultrasonic excitation probe to solve the technical problem of impurity in the ultrasonic mode excited by the previously designed probe

Method used

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  • A Design Method of Electromagnetic Ultrasonic Excitation Probe
  • A Design Method of Electromagnetic Ultrasonic Excitation Probe
  • A Design Method of Electromagnetic Ultrasonic Excitation Probe

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Embodiment Construction

[0015] In order to enable those skilled in the technical field to which this application belongs to understand this application more clearly, the technical solutions of this application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0016] The main implementation principle of the present invention is to determine a specific frequency according to the sound propagation principle in the solid plate, that is, the propagation law of SH (Shear Horizontal, horizontal shear) guided waves, and then design the electromagnetic ultrasonic excitation probe according to the frequency. Among them, the electromagnetic ultrasonic excitation probe is composed of a permanent magnet magnetic block 1 and an electromagnetic ultrasonic excitation coil 2, such as figure 1 As shown, the electromagnetic ultrasonic excitation coil 2 is placed between the N pole and the S pole of the permanent magnet magnet block 1. The permanent magnet magnet ...

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Abstract

The invention discloses an electromagnetic ultrasonic excitation probe design method, according to the sound propagation principle, namely SH type guided wave propagation rule, in a solid plate, optimum excitation frequency is determined, and according to the frequency, an electromagnetic ultrasonic excitation probe is designed; enhancement of SH type 0 order mode guided wave and inhibition of 1 order mode guided wave in the plate can be realized, simplification of the mode of a guided wave excited in a particular frequency can be realized, the signal-to-noise ratio is improved, and defect detection probability and quantization accuracy can be effectively improved.

Description

Technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to a design method of an electromagnetic ultrasonic excitation probe. Background technique [0002] Ultrasonic testing is one of the commonly used non-destructive testing methods in industry. When the ultrasonic wave propagates in the object and encounters a defect, a part of the sound wave will be reflected and received by the ultrasonic probe. By analyzing the reflected wave, the defect can be accurately measured, and the position and size of the internal defect can be displayed, and the thickness of the material can be measured Wait. [0003] The electromagnetic ultrasonic technology directly participates in the energy conversion of the measured object and does not require an additional coupling agent, so it becomes the only effective means of exciting ultrasonic waves in some special occasions. For ferromagnetic materials, electromagnetic ultrasonic excitation technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/24G01N29/34
Inventor 邱长春曹崇珍张永江杨金生陈崇祺赵云利杨寒邸强华傅丹蓉
Owner BC P INC CHINA NAT PETROLEUM CORP
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