超磁致伸缩传感器背衬层参数优化的实验研究

doi:10.16180/j.cnki.issn1007-7820.2021.02.012

Abstract

Abstract:

The backing layer of the traditional giant magnetostrictive sensor poorly absorbs the residual vibration, which affects the excitation performance. In view of this problem, the relationship between the backing layer parameters and the excitation performance of the magnetostrictive sensor is studied by using different parameters of the backing layer. The optimum backing layer ratio is determined to be number 3, the length is 25 mm, and the thickness is 6 mm. The sensor with this backing layer and the sensor with the traditional one are used to detect the same pipe respectively. The test results show that the echo coefficient is increased by 10.7%, the SNR is increased by 10.6 dB, and the dead zone detection time is shortened by 0.4×10^-4 s, which further verifies the practicability of the optimized giant magnetostrictive sensor backing layer.

Key words: ultrasonic guided wave, magnetostrictive sensor, backing layer, parameter optimization, test, performance analys

CLC Number:

TN04

JIANG Yinfang,HU Huajian,Guo Yongqiang,WU Bo. Experimental Study on Parameters Optimization of Magnetostrictive Sensor Backing Layer[J].Electronic Science and Technology, 2021, 34(2): 68-73.

Figures/Tables 9

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References 17

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类别	激励幅值	回波系数	信噪比	盲区时间
新型超磁致伸缩传感器	1.35 V	34.1%	30.7 dB	2.8×10^-4 s
传统超磁致伸缩传感器	0.81 V	23.4%	20.1 dB	3.6×10^-4 s

Experimental Study on Parameters Optimization of Magnetostrictive Sensor Backing Layer

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