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基于电阻抗层析成像的CFRP结构损伤检测

范文茹 王勃 李靓瑶 周琛

范文茹, 王勃, 李靓瑶, 等 . 基于电阻抗层析成像的CFRP结构损伤检测[J]. 北京航空航天大学学报, 2019, 45(11): 2177-2183. doi: 10.13700/j.bh.1001-5965.2019.0149
引用本文: 范文茹, 王勃, 李靓瑶, 等 . 基于电阻抗层析成像的CFRP结构损伤检测[J]. 北京航空航天大学学报, 2019, 45(11): 2177-2183. doi: 10.13700/j.bh.1001-5965.2019.0149
FAN Wenru, WANG Bo, LI Jingyao, et al. Damage detection of CFRP structure based on electrical impedance tomography[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(11): 2177-2183. doi: 10.13700/j.bh.1001-5965.2019.0149(in Chinese)
Citation: FAN Wenru, WANG Bo, LI Jingyao, et al. Damage detection of CFRP structure based on electrical impedance tomography[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(11): 2177-2183. doi: 10.13700/j.bh.1001-5965.2019.0149(in Chinese)

基于电阻抗层析成像的CFRP结构损伤检测

doi: 10.13700/j.bh.1001-5965.2019.0149
基金项目: 

国家自然科学基金 61301244

中央高校基本科研业务费专项资金 3122016A010

详细信息
    作者简介:

    范文茹  女, 博士, 副教授, 硕士生导师。主要研究方向:电学检测技术

    王勃  男, 硕士研究生。主要研究方向:电学检测技术

    李靓瑶  女, 硕士研究生。主要研究方向:电学检测技术

    通讯作者:

    范文茹.E-mail:wenrufan@hotmail.com

  • 中图分类号: TP212

Damage detection of CFRP structure based on electrical impedance tomography

Funds: 

National Natural Science Foundation of China 61301244

the Fundamental Research Funds for the Central Universities 3122016A010

More Information
  • 摘要:

    电阻抗层析成像(EIT)是一种新兴的碳纤维增强复合材料(CFRP)结构状态评估方法。通过将EIT技术应用于一种商用各向异性CFRP层合板,初步研究了EIT的结构损伤检测能力。利用COMSOL软件建立CFRP多种损伤模型,有限元分析获取三维场空间电势分布信息。为改进EIT技术对各向异性CFRP结构损伤的图像重构效果,采用嵌入式电极有效采集材料内部电信号;同时,提出一种改进的基于L1稀疏正则化的图像重建算法。另外建立一套基于数字万用表的嵌入式16电极的EIT硬件系统,利用EIT系统检测平台对简单CFRP损伤进行检测,结果显示损伤材料图像重建效果良好,证明EIT方法在CFRP结构损伤检测中的可行性。

     

  • 图 1  正交型CFRP层合板模型

    Figure 1.  Orthogonal CFRP laminate model

    图 2  嵌入式电极的CFRP层合板模型

    Figure 2.  CFRP laminate model of embedded electrode

    图 3  损伤模型图像重建

    Figure 3.  Image reconstruction of damage model

    图 4  分布16个嵌入式电极的CFRP层合板

    Figure 4.  CFRP laminated plates with sixteen embedded electrodes

    图 5  EIT系统结构及处理部分

    Figure 5.  Structure and processing part of EIT system

    图 6  搭建的EIT硬件系统和测试材料

    Figure 6.  Established EIT hardware system and testing materials

    图 7  CFRP单孔损伤形式重建结果

    Figure 7.  Reconstruction results of CFRP single hole damage form

    图 8  CFRP双孔损伤形式重建结果

    Figure 8.  Reconstruction results of CFRP double hole damage form

    图 9  双孔损伤测量与仿真电压差值的对比

    Figure 9.  Comparison of double hole damage measurement and simulation voltage difference

    表  1  不同算法的重建图像消耗时间

    Table  1.   Reconstructed image consumption time of different algorithm  s

    损伤类型 Tikhonov CG SpaRSA MSpaRSA
    冲击损伤model 1 0.712 0.492 0.051 0.047
    冲击损伤model 2 0.665 0.451 0.065 0.047
    分层损伤 0.688 0.438 0.062 0.056
    裂纹损伤 0.685 0.460 0.085 0.052
    下载: 导出CSV

    表  2  不同算法的重建图像相关系数

    Table  2.   Reconstructed image correlation coefficients of different algorithms

    损伤类型 Tikhonov CG SpaRSA MSpaRSA
    冲击损伤model 1 0.405 9 0.352 0 0.829 0 0.952 3
    冲击损伤model 2 0.418 1 0.353 9 0.700 3 0.929 8
    分层损伤 0.403 2 0.332 8 0.825 2 0.926 8
    裂纹损伤 0.069 6 0.119 4 0.200 0 0.462 5
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-04-03
  • 录用日期:  2019-06-01
  • 刊出日期:  2019-11-20

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