超声导波焊缝检测中阵列式传感器的信号融合方式研究

doi:10.16180/j.cnki.issn1007-7820.2020.07.007

电子科技 ›› 2020, Vol. 33 ›› Issue (7): 32-36.doi: 10.16180/j.cnki.issn1007-7820.2020.07.007

超声导波焊缝检测中阵列式传感器的信号融合方式研究

杜晗,许桢英

江苏大学机械工程学院,江苏镇江 212013

收稿日期:2019-05-01 出版日期:2020-07-15 发布日期:2020-07-15
作者简介:杜晗(1994-),女,硕士研究生。研究方向:超声导波技术。|许桢英(1978-),女,教授,博士生导师。研究方向:机器视觉理论及检测技术、光、声无损检测理论与技术、微器件精密成形及精度控制、仪器与测试精度理论。
基金资助:
国家自然科学基金(51179076)

The Research of Ultrasonic Wave Signal Fusion on Array Sensors in Weld Detection

DU Han,XU Zhenying

School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China

Received:2019-05-01 Online:2020-07-15 Published:2020-07-15
Supported by:
National Natural Science Foundation of China(51179076)

摘要/Abstract

摘要：

针对超声导波焊缝检测中阵列式传感器信号融合的问题,文中根据特征导波在焊缝结构中的传播原理,提出了分时激励的方法对阵列中不同激励单元激励出的信号进行叠加。通过ABAQUS有限元分析软件仿真了不同数量激励晶片组成的传感器阵列直接激励出的检测信号和使用分时激励后激励出的检测信号,并发现多个激励晶片会导致检测信号产生波形杂乱和不规则等现象;而分时激励的方法则减少了信号混杂的情况,且检测信号的能量可以随着激励晶片数量的增加而稳定增加,信号叠加效果更加理想。

关键词: 焊缝检测, 超声导波, 特征导波, 阵列式传感器, 信号融合, 仿真

Abstract:

Aiming at the problem of signal fusion of array sensor used in ultrasonic guided wave weld detection, the asynchronous excitation was proposed to superimpose the signals from different excitation elements in array sensor through the propagation of characteristic guided wave in weld structure. The ABAQUS finite element analysis software was used to simulate the detection signal directly excited by the sensor array composed of different numbers of excitation chips and the detection signal excited by using time-division excitation. It was found that multiple excitation elements could lead to the disorder and irregularity of the signals, while the asynchronous excitation reduced the mixing of signals, and the energy of the detection signal can be steadily increased as the number of excitation wafers increases, and the signal superposition effect is more ideal. The time-division excitation method reduced the signal mixing, and the energy of the detection signal could be steadily increased as the number of excitation wafers increased, and the signal superposition effect was more ideal.

Key words: weld detect, ultrasonic guided wave, feature guided wave, array sensor, signal fusion, simulation

中图分类号:

TN911.72

杜晗,许桢英. 超声导波焊缝检测中阵列式传感器的信号融合方式研究[J]. 电子科技, 2020, 33(7): 32-36.

DU Han,XU Zhenying. The Research of Ultrasonic Wave Signal Fusion on Array Sensors in Weld Detection[J]. Electronic Science and Technology, 2020, 33(7): 32-36.

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超声导波焊缝检测中阵列式传感器的信号融合方式研究

The Research of Ultrasonic Wave Signal Fusion on Array Sensors in Weld Detection

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