Understanding the coupled electromechanical response of a PZT patch attached to concrete: Influence of substrate size

Narayanan, Arun Shankar; Kocherla, Amarteja; Subramaniam, Kolluru V. L.

doi:10.1016/j.measurement.2018.04.055

Cited by 33 publications

(18 citation statements)

References 30 publications

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“…However, this phenomenon has been investigated only in the frequencies below the first resonance frequency. Narayanan et al (2018) showed that after bonding, local peaks may form around the resonance frequencies and the size of the substrate can affect the characteristics of the local peaks. However, the research into the admittance of bonded PZT patches remains insufficient and damage detection parameters, such as frequency range selection, are frequently chosen without regard to the post-bonding changes of the PZT admittance.…”

Section: Introductionmentioning

confidence: 99%

Admittance signature of piezoceramic transducers bonded on different materials

Zhang

Huo

et al. 2022

Journal of Intelligent Material Systems and Structures

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In the electro-mechanical impedance technique (EMI) for structural health monitoring, the admittance change between the free state and bonded state can play a crucial role in the selection of the optimal frequency range prior to attachment. However, the frequency shift after bonding has so far been ignored. This paper investigates the change in the admittance of the PZT patch after bonding to different materials via experimentation and numerical simulation. The results show that the frequency shift of the first resonance frequency is dependent on the material of the substrate. For passive materials, the frequency shift is between −15 and 15 kHz. With active materials, the frequency shift is between 40 and 80 kHz. Furthermore, the frequency shift is related to the elastic modulus of the materials, with a high elastic modulus resulting in a large frequency shift. The findings lay the foundation for a more comprehensive understanding of the admittance at the bonded state and for the proper application of the EMI technique.

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Section: Introductionmentioning

confidence: 99%

Admittance signature of piezoceramic transducers bonded on different materials

Zhang

Huo

et al. 2022

Journal of Intelligent Material Systems and Structures

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“…Electromechanical impedance (EMI)-based structural health monitoring as a NDT technique was first proposed by [1]; and exhibits great potential in the field of structural health monitoring [2][3][4]. In recent years, the EMI technique had been employed by researchers to assess structures in various fields and of various materials: aerospace and aircraft structures [5], concrete structures [6][7][8], steel structures [9][10][11], jacket-type offshore structures [12], and polymer and reinforced composite structures [13]. The basic principle of the EMI-based damage detection technique is to track the electrical impedance of a PZT (lead zirconate titanate) transducer, which was surface bonded onto the host structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Miniature Impedance Board for Loosening Monitoring of the Threaded Pipe Connection

et al. 2021

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Electromechanical impedance (Electromechanical impedance)-based methods as potential nondestructive evaluation (NDT) techniques have been widely used in the field of structural health monitoring (SHM), especially for the civil, mechanical, and aerospace engineering fields. However, it is still difficult to apply in practical applications due to the limitations of the impedance measurement hardware, which is usually expensive, bulky, and heavy. In this paper, a small, lightweight, and low power consumption EMI-based structural health monitoring system combined with the low-cost miniature impedance board AD5933 was studied experimentally to investigate its quantifiable performance in impedance measurement and structural damage identification. At first, a simple impedance test with a free PZT patch was introduced to present the impedance calibration and measurement procedure of AD5933, and then its calibration performance was validated by comparing the signature with the one measured by a professional impedance analyzer (WK6500B). In order to further validate the feasibility and effectiveness of the AD5933 board in practical applications, a threaded pipe connection specimen was assembled in the laboratory and then connected with the AD5933 to acquire its impedance signatures under different loosening severities. The final results demonstrated that the impedance measured by the AD5933 show a good consistency with the measurements by the WK6500B, and the evaluation board could be successfully utilized for the loosening severities identification and quantitatively evaluation.

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“…When PZT sensor is bonded with the host structure, the electro-mechanical impedance (EMI) signal of PZT sensor can reflect the mechanical information of its host structure. Since the concrete gain the strength rapidly at the very early age (before 24 h) and the early age (1–7 days) (Lai et al, 2013; Narayanan et al, 2018), the PZT sensor is a good candidate for real-time monitoring of the strength of concrete. Surface mounting is one of the popular ways to bond the PZT sensor with the host structure for varieties of applications (Parvasi et al, 2016; Xu et al, 2017; Yan et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Mechanism for using piezoelectric sensor to monitor strength gain process of cementitious materials with the temperature effect

Han

Nantung

et al. 2020

Journal of Intelligent Material Systems and Structures

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Recently, the piezoelectric based sensor coupled with electromechanical impedance (EMI) technique is gaining attention on monitoring the mechanical properties changes in cementitious materials. However, the EMI signals obtained from the sensing system are not only influenced by the development of inherent mechanical properties in the host structure but also affected by the variation of temperature. When implementing a piezoelectric based sensor, both the ambient temperature change and the heat release from newly casted concrete would influence the sensing accuracy. In order to eliminate the biases from temperature effect, the mechanisms of EMI technique for strength sensing were investigated. The experiment work was separated in two parts. The piezoelectric sensors were first used to monitor the strength gaining of the newly casted cementitious samples curing under constant temperature. A strength estimation system was developed based on the experiment results. Later, the temperature variation was induced to affect the sensing performance. A temperature compensation technique was proposed to eliminate the temperature effect. It has concluded that the proposed compensation method can improve the strength sensing accuracy. The new understanding should help to promote the practical applicable EMI sensing technique.

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Understanding the coupled electromechanical response of a PZT patch attached to concrete: Influence of substrate size

Cited by 33 publications

References 30 publications

Admittance signature of piezoceramic transducers bonded on different materials

Admittance signature of piezoceramic transducers bonded on different materials

Experimental Evaluation of Miniature Impedance Board for Loosening Monitoring of the Threaded Pipe Connection

Mechanism for using piezoelectric sensor to monitor strength gain process of cementitious materials with the temperature effect

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