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Electromagnetic Ultrasonic Dual Wave Transducer

一种超声波、换能器的技术，应用在使用声波/超声波/次声波分析固体、使用声波/超声波/次声波进行材料分析、仪器等方向，能够解决无法工件表面产生超声纵波等问题，达到避免测量误测、避免检测误差、提高检测精度的效果

Active Publication Date: 2019-11-26
SUZHOU PHASERISE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electromagnetic ultrasonic transducers described in Publication 2 and Publication 4 are unable to generate ultrasonic longitudinal waves on the workpiece surface

Method used

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  • Electromagnetic Ultrasonic Dual Wave Transducer
  • Electromagnetic Ultrasonic Dual Wave Transducer
  • Electromagnetic Ultrasonic Dual Wave Transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

[0048] see figure 1 , which is a structural schematic diagram of an embodiment of the present invention, provides an electromagnetic ultrasonic dual-wave transducer, which includes a housing 1 , a permanent magnet assembly, a coil 4 , a shielding layer 5 and a wire 6 arranged in the housing 1 .

[0049] The permanent magnet assembly includes a cylindrical first permanent magnet 2 and a second permanent magnet 3 sleeved on the first permanent magnet 2. The second permanent magnet 3 is in the shape of a ring. The ...

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PUM

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Abstract

The invention discloses an electromagnetic-ultrasonic double-wave transducer, which includes a casing, a permanent magnet assembly, a coil, a shielding layer and a wire arranged in the casing; the permanent magnet assembly includes a first permanent magnet, and a The second permanent magnet on the first permanent magnet, the magnetization directions of the first permanent magnet and the second permanent magnet are perpendicular to the bottom of the housing and their magnetic field directions are opposite, the first permanent magnet and the second permanent magnet Between the second permanent magnets is a non-conductive and non-magnetic bushing material, and the upper end surfaces of the first permanent magnet and the second permanent magnet realize magnetic circuit closure through a magnetic circuit closure; the coil is fixed on the bottom of the housing And located below the first permanent magnet, the shielding layer is arranged between the lower end of the first permanent magnet and the coil, and below the second permanent magnet, one end of the wire is connected to the coil and the other One end connects to power and signal plugs. The electromagnetic-ultrasonic double-wave transducer provided by the invention can simultaneously excite longitudinal waves and transverse waves on the workpiece surface, thereby improving detection accuracy.

Description

technical field [0001] The invention relates to the technical field of ultrasonic detection, in particular to an electromagnetic ultrasonic double-wave transducer. Background technique [0002] In the field of ultrasonic testing, sometimes it is necessary to use two modes of waves to accurately detect certain material properties, dimensions or defects of the workpiece. For example, in the detection of nodularity of ductile iron, if there is only one mode of wave, it is not easy to distinguish whether the change of flight time comes from the change of sample thickness or the change of ultrasonic velocity itself. This greatly affects the effectiveness of the detection. Another example is in the tension detection of bolts, if only one mode of ultrasonic waves is used, it is impossible to know whether the flight time of ultrasonic waves comes from the change of object size or the change of ultrasonic velocity caused by the tensile stress of bolts. In this way, it is impossible...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/50
CPCG01D5/50G01N29/2412G01N2291/02827G01N2291/0421G01N2291/0422G01N2291/2691G01N29/07G01N29/043G01L5/00
Inventor 杨龙谢明明金怡胜周新宗赵军辉朱绪祥沈宇平
Owner SUZHOU PHASERISE TECH