Characterization of PZT ceramic transducer embedded in concrete

Chen, Yu; Wen, Yumei; Li, Ping

doi:10.1016/j.sna.2006.01.001

Cited by 16 publications

(11 citation statements)

References 16 publications

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“…A piezoelectric ceramic was selected which resonant characteristics within the frequency range selected as, at resonance, the material is most sensitive to changes in its surroundings. In the traditional EMI method, the resonant frequency is investigated but the work by Chen et al [20] with a piezoelectric embedded in mortar found that the antiresonance shows greater monotonicity under loading conditions so it was decided to select a material with an antiresonance located within the 70-100 kHz frequency range. Since antiresonance is of interest in this paper, it was decided to focus on the impedance signature of the sensing system.…”

Section: Section B: the Emi Methodsmentioning

confidence: 99%

“…In the conventional EMI method, a piezoelectric patch is applied to the device being tested; if the properties of the device change, this results in changes in the electrical signature of the piezoelectric material [16]. The EMI method has been used to monitor aluminium [17], bolted joints [18], and subsequently applied to concrete for damage detection purposes [19], load sensing [20] and strength monitoring [21,22]. In this paper, the EMI method was extended to allow it be used in an embedded sensor sensing node.…”

Section: Developments In Wireless Sensingmentioning

confidence: 99%

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Design and performance analysis of an embedded wireless sensor for monitoring concrete curing and structural health

Quinn

Angove

Buckley

et al. 2011

J Civil Struct Health Monit

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The monitoring of the properties of concrete introduces many challenges to the design of any nondestructive sensing system. The advance in recent years of wireless technologies has allowed the development of miniaturised sensing systems, which have now reached a stage of development that allows them to be embedded into concrete. This paper describes the design and performance analysis, under replicated building site conditions, of an embeddable wireless sensing node for monitoring concrete curing and structural health. Wireless sensors with temperature and relative humidity measurement capabilities were designed with onboard communication using the 433 MHz ISM band and embedded into concrete. Testing, which replicated on-site conditions, was carried out on the sensors to determine what the effect of the concrete itself, the steel reinforcement, and steel backed formwork had on the transmission of data. The transmission distance and reliability of receiving data was quantified. Test results confirm that it is possible to deploy an embedded sensor system and transmit live data from the embedded sensor to a data acquisition system located outside the concrete.Preliminary results show that steel backed formwork reduces the transmission distance of the sensors to 3.5 m from 5 m without formwork. Analysis of the data from the sensor showed that, while temperature readings were reliable, the method of measuring relative humidity, using a shielded humidity sensor, may not be suitable for use over the full lifetime of the structure. Accordingly, the electromechanical impedance (EMI) method was enhanced to allow it be used in an embedded system incorporating the AD5933 impedance chip. The EMI method has been successfully applied to monitor the strength development and deterioration of concrete but limited investigation has been carried out into advancing the method for deployment in embedded sensing systems. Analysis of the strength development of freshly mixed concrete and the effects of loading on the response of the sensor show that it is possible to monitor both the strength development and subsequent deterioration of concrete by monitoring the reactance antiresonant frequency shift and peak resistance of a piezoelectric material embedded into concrete. Analysis of the reactance antiresonant frequency shift showed that the technique successfully monitored the compressive strength development of the concrete structure, while monitoring the reactance antiresonant frequency shift in conjunction with the resistance peak provided important information on the condition of the concrete under loading conditions. This is believed to be the first time that the EMI method for monitoring concrete curing and structural health has been demonstrated for use in an embedded wireless sensing system.

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Section: Section B: the Emi Methodsmentioning

confidence: 99%

Section: Developments In Wireless Sensingmentioning

confidence: 99%

Design and performance analysis of an embedded wireless sensor for monitoring concrete curing and structural health

Quinn

Angove

Buckley

et al. 2011

J Civil Struct Health Monit

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“…4, the used PZT ceramic is a disc-like PZT-4 ceramic with the dimension (P12.5X2mm2. On the either surface of the ceramic is covered with a layer of rubber, which according to our previous researches is used to protect the ceramic after embedment and to release the stress concentration produced by the coarse components in the concrete modules during the concretion or loading process [27]. In Fig.…”

Section: A New Methods Ofcalculating Dissipationfactorsmentioning

confidence: 99%

Characterization and Evaluation of Smart Concrete Modules Embedded with Piezoelectric Devices

Wen

Chen

2006

2006 5th IEEE Conference on Sensors

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The sensory behaviors of the concrete modules embedded with piezoelectric devices (PZT element) are characterized. Such PZT-embedded concrete modules demonstrate sensitivity to the load applied on the modules. In this case, the load produces stress in the concrete module, which is detected by measuring the equivalent circuit parameters (equivalent parameters for short) of the PZT element embedded in the module. In spite of stress, temperature also leads to the changes of the equivalent parameters of the PZT element, which makes it difficult to identify the effects of the stress and temperature on the PZT elements. However, it is also found that the characteristic frequencies are quite sensitive to temperature but have little dependence on stress. Such feature enables the characteristic frequencies to be used as reference parameters when the PZT elements are affected by both stress and temperature. In order to characterize the energy losses of the PZT element embedded in the concrete module, complex physical coefficients are introduced to the piezoelectric equivalent model, and a new method is proposed to calculate three dissipation factors which are used to represent the level of different energy losses respectively. In this method, the dissipation factors are looked as the function of the equivalent parameters of piezoelectric devices in specific mode, which simplified the computing of the dissipation factors.I.

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“…By means of the electrical impedance measurement, the characteristics of the equivalent parameters of a Fe/Mn co-doped PZT (PZT-8, "hard") ceramic element embedded in a sanded-cement cubic specimen which is under quasistatic loadings were researched [18]. Such changes in parameters of the PZT ceramic element indicate the stress level according to the relationships between the physical characteristics and the stress.…”

Section: Introduction mentioning

confidence: 99%

A systematic analysis of the radial resonance frequency spectra of the PZT-based (Zr/Ti = 52/48) piezoceramic thin disks

et al. 2020

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In this paper, both the 1D radial mode and the equivalent circuit of a piezoceramic disk resonator were theoretically analyzed based on IEEE standards. And then, the radial resonance frequency spectra of the PZT-based (Nb/Ce co-doped Pb(Zr 0.52 Ti 0.48)O 3 , abbreviated as PZT-NC) piezoceramic circular disks were measured by an impedance analyzer. A set of resonance frequency spectra including six electrical parameters: Z, R, X, Y, G, and B, were used for making a value distinction between three possible resonance frequencies, and between three possible antiresonance frequencies. A new-form Nyquist diagram was depicted to describe the position relations of these characteristic frequencies. Such a complete resonance frequency spectrum was used to perform the accurate calculation of some material constants and electromechanical coupling parameters for the PZT-NC piezoceramics. Further, the frequency dependence of the AC conductive behavior of the specimen was characterized by the complex impedance measurement. The values of AC conductivity at resonance/antiresonance were deduced from the equivalent circuit parameters. Moreover, the Van Dyke circuit model was assigned to each element contribution and the simulated curves showed a nice fitting with the experimental results. Finally, an additional impedance analysis associated with resonance frequency calculation revealed a complicated coupled vibration mode existing in the annular disk specimen.

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Characterization of PZT ceramic transducer embedded in concrete

Cited by 16 publications

References 16 publications

Design and performance analysis of an embedded wireless sensor for monitoring concrete curing and structural health

Design and performance analysis of an embedded wireless sensor for monitoring concrete curing and structural health

Characterization and Evaluation of Smart Concrete Modules Embedded with Piezoelectric Devices

A systematic analysis of the radial resonance frequency spectra of the PZT-based (Zr/Ti = 52/48) piezoceramic thin disks

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