基于密集阵列的参数化Lamb波检测技术研究

doi:10.3901/JME.2021.20.020

机械工程学报 ›› 2021, Vol. 57 ›› Issue (20): 20-28.doi: 10.3901/JME.2021.20.020

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基于密集阵列的参数化Lamb波检测技术研究

陈洪磊^1,2, 刘增华^1,2, 吴斌^1,2, 何存富^1,2

1. 北京工业大学材料与制造学部北京 100124;
2. 北京工业大学北京市精密测控与仪器工程技术研究中心北京 100124

收稿日期:2020-11-17 修回日期:2021-05-23 出版日期:2021-10-20 发布日期:2021-12-15
通讯作者: 刘增华(通信作者),男,1973年出生,博士,教授,博士研究生导师。主要研究方向为超声和电磁无损检测技术、结构健康监测和传感器检测技术等。E-mail:liuzenghua@bjut.edu.cn
作者简介:陈洪磊,男,1987年出生,博士研究生。主要研究方向为超声无损检测技术,智能分析算法,信号处理技术。E-mail:chenhonglei@emails.bjtu.edu.cn
基金资助:
国家重点研发计划（2018YFC0809003）和国家自然科学基金（11772014）资助项目。

Parametric Lamb Waves Detection Technology Based on Compact Array

CHEN Honglei^1,2, LIU Zenghua^1,2, WU Bin^1,2, HE Cunfu^1,2

1. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124;
2. Beijing Engineering Research Center of Precision Measurement Technology and Instruments, Beijing University of Technology, Beijing 100124

Received:2020-11-17 Revised:2021-05-23 Online:2021-10-20 Published:2021-12-15

摘要/Abstract

摘要： Lamb波具有衰减慢、模态多、对结构几何特性和材料属性变化敏感等特点，在大型板壳结构的远距离、大范围快速检测技术研究领域得到了众多的关注。传统Lamb波成像算法将多组散射信号时间相关参数映射到结构每一个离散空间网格上实现缺陷信息的可视化。该类算法的执行效率低，且无法直接提供缺陷位置参数信息。将缺陷成像问题转换为散射信号源点求解问题进行分析，提出一种基于十字形密集阵列的参数化Lamb波检测技术。首先基于时飞原理建立散射信号源点求解函数模型；并提出一种融合烟火算法和统计分析技术的信号源点求解函数模型分析算法，实现缺陷空间位置的参数化分析。最后通过有限元模型和试验验证了所提出的检测技术对不同角度裂纹缺陷检测的有效性，并分析了模型参数设置对检测效果的影响。

关键词: Lamb波, 成像算法, 参数化检测, 密集阵列, 烟火算法

Abstract: Lamb waves have the low attenuation, multi-modes and sensitive to the change of geometry and material property of structures. They have been attractive much attention for rapid detection large plate/shell in long distance and large scale. In classical Lamb waves based imaging algorithms, the visualization of defects information is realized through mapping time relative parameters of multi-scatter signals into every discrete space grid of structures. It has low execution efficiency and cannot provide defect location parameter information directly. In this research, a parametric Lamb waves detection technology used for compact cross array is proposed through transforming the defect imaging problem into the scattering signal source point solving problem to analyse. In the first, a function model to estimate the scattering signal source points is established based on the time-of-flight principle; then an intelligent algorithm to solve the proposed model is developed through combining the fireworks algorithm and the statistical analysis technology. Parameters information of defects location is realized. Finally, the effectiveness of the proposed technology in parametric detection of cracks with different angles is verified with the finite element method and experiment. And the influence of parameter setting on the detection effect is analysed.

Key words: Lamb waves, imaging algorithm, parametric detection, compact array, fireworks algorithm

中图分类号:

TG156

陈洪磊, 刘增华, 吴斌, 何存富. 基于密集阵列的参数化Lamb波检测技术研究[J]. 机械工程学报, 2021, 57(20): 20-28.

CHEN Honglei, LIU Zenghua, WU Bin, HE Cunfu. Parametric Lamb Waves Detection Technology Based on Compact Array[J]. Journal of Mechanical Engineering, 2021, 57(20): 20-28.

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基于密集阵列的参数化Lamb波检测技术研究

Parametric Lamb Waves Detection Technology Based on Compact Array

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