Parametric study and modeling of PZT based wave propagation technique related to practical issues in monitoring of concrete curing

Lim, Yee Yan; Kwong, Kok Zee; Liew, Willey Yun Hsien; Padilla, Ricardo Vásquez; Soh, Chee Kiong

doi:10.1016/j.conbuildmat.2018.05.074

Cited by 33 publications

(16 citation statements)

References 32 publications

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“…The results of an experiment based on the time-reversal method accord with the theoretical model. Lim et al [17] conducted a series of semi-analytical and numerical investigations into the elastic wave propagation during the concrete curing process. A set of parameters including the elastic modulus, the Poisson’s ratio, and the damping coefficient were discussed.…”

Section: Introductionmentioning

confidence: 99%

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Wang

Cao

2019

Sensors

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Cement-based components have been widely used in civil engineering structures. However, due to wearing and deterioration, the cement-based components may have brittle failure. To provide early warning and to support predictive reinforcement, the piezoelectric materials are embedded into the cement-based components to excite and receive elastic waves. By recognizing the abnormalities in the elastic waves, hidden damage can be identified in advance. However, few research has been published regarding the damage quantification. In this paper, the wavelet packet analysis is adopted to calculate the energy of the transmitted elastic waves based on the improved piezoelectric aggregates (IPAs). Due to the growth of the damage, less elastic waves can pass through the damage zone, decreasing the energy of the acquired signals. A set of cement beams with different crack depths at the mid-span is tested in both numerical and experimental ways. A damage quantification index, namely the wavelet packet-based energy index (WPEI), is developed. Both the numerical and experimental results demonstrate that the WPEI decreases with respect to the crack depth. Based on the regression analysis, a strong linear relationship has been observed between the WPEI and the crack depth. By referring to the linear relationship, the crack depth can be estimated by the WPEI with a good accuracy. The results demonstrated that the use of the IPAs and the WPEI can fulfill the real-time quantification of the crack depth in the cement beams.

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Section: Introductionmentioning

confidence: 99%

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Wang

Cao

2019

Sensors

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“…The piezoelectric properties play an important role in electronic and microelectronic devices . The most widely used piezoelectric material is PbTiO 3 ‐PbZrO 3 (PZT)‐based three‐component system, but it contains toxic Pb that is harmful to the environment. Many countries have desired to use lead‐free materials for environment protection .…”

Section: Introductionmentioning

confidence: 99%

Luminescence and electrical properties of Eu‐modified Bi_0.5Na_0.5TiO₃ multifunctional ceramics

et al. 2019

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The Eu3+‐modified Bi0.5Na0.5TiO3 (BNT) ceramics have been fabricated by the solid‐state reaction method. The impact of Eu3+ doping on the structure, photoluminescence, and electrical properties has been studied by XRD, SEM, PL spectra, and LCR meter. X‐ray diffraction analysis reveals that the crystal structure of the samples is well matched with the trigonal perovskite, and the optimal temperature of presintering is 880°C. The Eu3+‐doped BNT ceramics show excellent red fluorescence at 614 nm corresponding to the 5D0→7F2 transition of Eu3+ under 466 nm excitation and relatively long fluorescence lifetime. The BNT‐0.02Eu ceramic density is up to 5.68 g/cm3 and the relative density is up to 94.6% with sintering temperature 1075°C. The piezoelectric constant (d33) of samples has been significantly improved up to 110 pC/N by Eu3+ doping. The BNT‐0.03Eu ceramic presintered at 880°C and sintered at 1050°C has good dielectric properties and excellent luminescence properties. Eu3+‐doped BNT ceramics make it potential applications for novel integrated electro‐optical and multifunctional devices.

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“…In SHM systems, ultrasonic waves are often used and PZT transducers, due to their strong piezoelectric effect and high bandwidth [4,5], are often employed to generate and detect these waves in structures [6,7,8,9,10,11]. The detected waves are then further processed to estimate the operating parameters and health state of the structure [12,13,14], such as the stiffness change of a material [15,16,17], the looseness of bolts [18,19], and the curing state of different materials [20,21], or to identify structural damages, including delamination [22,23,24], cracking [25,26], and corrosion [27].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Ultrasonic Energy Diffusion in a Steel Alloy Sample with Tensile Force Using PZT Transducers

Wang

Zhou

et al. 2019

Sensors

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During the propagation of ultrasound in a polycrystalline material, ultrasonic energy losses due to the scattering at the boundaries between grains is usually described by the ultrasonic energy diffusion equation, and the boundaries of the grains in the material are influenced by the structural load. The aim of this research is to investigate the characterization of ultrasonic energy diffusion in a steel alloy sample under structural load by using lead zirconate titanate (PZT) transducers. To investigate the influence of structural load on ultrasonic energy diffusion, an experimental setup of a steel alloy plate under different tensile forces is designed and four samples with similar dimensions are fabricated. The experimental results of the four samples reveal that, during the loading process, the normalized ultrasonic energy diffusion coefficient fluctuates firstly, then decreases and at last increases as the tensile force increases. The proposed tensile force index shows a similar changing trend to the recorded displacement of the sample. Moreover, when the tensile force is less than the lower yield point or the sample deforms elastically, the index can be approximated by a cubic model. Therefore, the proposed tensile force index can be used to monitor the tensile force in the elastic deformation stage. Moreover, based on these findings, some force evaluation methods and their potential applications, such as the preloading detection of bolts, can be developed based on the linear relationships between the proposed index and the applied force.

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Parametric study and modeling of PZT based wave propagation technique related to practical issues in monitoring of concrete curing

Cited by 33 publications

References 32 publications

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Luminescence and electrical properties of Eu‐modified Bi_0.5Na_0.5TiO₃ multifunctional ceramics

Characterization of Ultrasonic Energy Diffusion in a Steel Alloy Sample with Tensile Force Using PZT Transducers

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Parametric study and modeling of PZT based wave propagation technique related to practical issues in monitoring of concrete curing

Cited by 33 publications

References 32 publications

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Luminescence and electrical properties of Eu‐modified Bi0.5Na0.5TiO3 multifunctional ceramics

Characterization of Ultrasonic Energy Diffusion in a Steel Alloy Sample with Tensile Force Using PZT Transducers

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Luminescence and electrical properties of Eu‐modified Bi_0.5Na_0.5TiO₃ multifunctional ceramics