Electro-mechanical Impedance Modeling for Health Monitoring of a Damaged Thin Plate

Zhang, Yuxiang; Xu, Fuhou; Zhang, Tongda; Ma, Liuyi; Wu, Cuiqin

doi:10.1109/icmtma.2011.293

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Principle of the EMI. Yang et al [22] proposed and simplifed the coupling system between PZT and the host structure into a 2D plane model and the model is adopted in the paper since it is more consistent with the experimental results [23].…”

Section: The Detection Foundation Of the Emi Methodsmentioning

confidence: 99%

An Electromechanical Impedance‐Based Imaging Algorithm for Damage Identification of Chemical Milling Stiffened Panel

Jiang,

Zhou,

Chen

et al. 2024

Structural Control and Health Monitoring

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The multiple intersecting stiffeners on the chemical milling stiffened panel (CMSP) limit the application of active health monitoring methods on it. An imaging algorithm based on electromechanical impedance (EMI) and probability-weighting is proposed to achieve quantitative evaluation and localization of the damage on CMSP. The proposed algorithm compensates for the difference in sensor performance with coefficients and there is no need to determine the key parameters of the algorithm through prior experiments. In the paper, the applicability of ultrasonic guided wave (GW) and EMI on CMSP was first studied through the finite element method. Based on EMI and the mean absolute percentage deviation (MAPD), the selected damage indicator (DI), a probability-weighted damage imaging algorithm are proposed and experimentally verified. The results indicate that due to the reflection and attenuation effects of stiffeners on GW, the signal characteristics of damage scattering waves are contaminated, making it difficult to quantitatively characterize the damage from GW signals through DIs. MAPD is positively correlated with the damage degree and has consistency in characterizing the signal of different PZTs under the same working condition. The feasibility and accuracy of the proposed algorithm are verified through experiments which show a strong engineering application capability.

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Section: The Detection Foundation Of the Emi Methodsmentioning

confidence: 99%

An Electromechanical Impedance‐Based Imaging Algorithm for Damage Identification of Chemical Milling Stiffened Panel

Jiang,

Zhou,

Chen

et al. 2024

Structural Control and Health Monitoring

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Application of High-frequency EMI on Shell SHM with Diverse Radians

Zhang

Tang

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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Exploring the application of electric-mechanical impedance (EMI) on structural health monitoring (SHM) of diverse systems or structures, especially the radian shell is very necessary to achieve the rapid online monitoring of structural damage. This paper studies the application of EMI on damage detection of shell structure with different radians. Using the piezoelectric equations of piezo-material lead zirconate titanate (PZT), the admittance values of aluminum shell before and after structural damage were got in a given frequency domain. Then by designing experiments based on Agilent 4294A instrument and analyzing the changes of admittance-frequency spectra before and after damage, it concluded the corresponding relationship between the sensitive detection frequency and the radian of the aluminum plate under given thickness; on the meantime, it is found that the damage index (DI) - root mean square deviation (RMSD) can be a judgment standard of damage by analyzing the data of special frequency band, which will has strong guiding significance for the selection of damage detection frequency and damage judging in arc structure hereafter.

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Electro-mechanical Impedance Modeling for Health Monitoring of a Damaged Thin Plate

Cited by 2 publications

References 8 publications

An Electromechanical Impedance‐Based Imaging Algorithm for Damage Identification of Chemical Milling Stiffened Panel

An Electromechanical Impedance‐Based Imaging Algorithm for Damage Identification of Chemical Milling Stiffened Panel

Application of High-frequency EMI on Shell SHM with Diverse Radians

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