Feasibility Study on Crack Detection of Pipelines Using Piezoceramic Transducers

Du, Guanglong; Kong, Qingzhao; Lai, Timothy Y. Y.

doi:10.1155/2013/631715

Cited by 24 publications

(17 citation statements)

References 29 publications

(27 reference statements)

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“…They also extended the EMI technique to complex structure, such as steam pipes and boilers in power plants. Du et al (2013) presented a feasibility study on the crack detection and severity monitoring of pipelines using PZT transducers. Na and Lee (2012 a) reported a method for selecting Resonance frequency range utilized for damage detection of composite structures.…”

Section: Generalmentioning

confidence: 99%

Structural Health Monitoring Using Metal Wire Based Piezo-Impedance Transducer

Khante¹

2016

IJRET

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Electromechanical impedance (EMI) method is a new non-destructive evaluation technique which is very effectively employed now a day in the field of structural health monitoring. In this study PZT patches are used to determine response of undamaged and damaged structure. One of the major drawback for the EMI method is the brittleness of the PZT material, thus making it difficult to attach on the curved, complex geometry and the surfaces under continuous impact from external load. This study presents a technique to overcome the difficulty of application of PZT on curved surface by introducing steel wire between structure and PZT element. It will eliminate direct bonding of PZT element to such complex structure. The method has shown promising results for damage detection of steel beam. This paper demonstrates the metal wire based EMI technique for damage assessment of beam.

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Section: Generalmentioning

confidence: 99%

Structural Health Monitoring Using Metal Wire Based Piezo-Impedance Transducer

Khante¹

2016

IJRET

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“…The experimental results show that piezoelectric transducers can predict the failure of concrete structures [52]. Du et al used the active sensing method based on piezoelectric transducers to monitor the severity of duct Sensors 2020, 20, 1212 3 of 18 cracks and established the crack severity index based on wavelet packet to quantitatively identify the damage of ducts at different cracks [53]. Hu et al deduced the elastic solution of wave propagation generated by PZT and obtained the viscoelastic solution from the elastic solution through mathematical analysis.…”

Section: Introductionmentioning

confidence: 99%

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers

Jiang

Zhang

et al. 2020

Sensors

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To understand the characteristics of longitudinal grouting quality, this paper developed a stress wave-based active sensing method using piezoceramic transducers to detect longitudinal grouting quality of the prestressed curved tendon ducts. There were four lead zirconate titanate (PZT) transducers installed in the same longitudinal plane. One of them, mounted on the bottom of the curved tendon duct, was called as an actuator for generating stress waves. The other three, pasted on the top of the curved tendon duct, were called as sensors for detecting the wave responses. The experimental process was divided into five states during the grouting, which included 0%, 50%, 75%, 90%, and 100% grouting. The voltage signals, power spectral density (PSD) energy and wavelet packet energy were adopted in this research. Experimental results showed that all the amplitudes of the above analysis indicators were small before the grouting reached 90%. Only when the grouting degree reached the 100% grouting, these parameters increased significantly. The results of different longitudinal PZT sensors were mainly determined by the distance from the generator, the position of grouting holes, and the fluidity of grouting materials. These results showed the longitudinal grouting quality can be effectively evaluated by analyzing the difference between the signals received by the PZT transducers in the curved tendon duct. The devised method has certain application value in detecting the longitudinal grouting quality of prestressed curved tendon duct.

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“…By using SHM technologies, the real-time damage detection of various structures, including concrete structures [2][3][4][5][6], pipeline structures [7][8][9][10][11][12], and steel structures [13][14][15][16][17][18][19], can be investigated in order to provide early warning and hopefully to avoid accidents. In the aerospace industry, several application areas have garnered significant interests.…”

Section: Introductionmentioning

confidence: 99%

Experimental Damage Identification of a Model Reticulated Shell

Hao

et al. 2017

Applied Sciences

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Abstract:The damage identification of a reticulated shell is a challenging task, facing various difficulties, such as the large number of degrees of freedom (DOFs), the phenomenon of modal localization and transition, and low modeling accuracy. Based on structural vibration responses, the damage identification of a reticulated shell was studied. At first, the auto-regressive (AR) time series model was established based on the acceleration responses of the reticulated shell. According to the changes in the coefficients of the AR model between the damaged conditions and the undamaged condition, the damage of the reticulated shell can be detected. In addition, the damage sensitive factors were determined based on the coefficients of the AR model. With the damage sensitive factors as the inputs and the damage positions as the outputs, back-propagation neural networks (BPNNs) were then established and were trained using the Levenberg-Marquardt algorithm (L-M algorithm). The locations of the damages can be predicted by the back-propagation neural networks. At last, according to the experimental scheme of single-point excitation and multi-point responses, the impact experiments on a K6 shell model with a scale of 1/10 were conducted. The experimental results verified the efficiency of the proposed damage identification method based on the AR time series model and back-propagation neural networks. The proposed damage identification method can ensure the safety of the practical engineering to some extent.

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Feasibility Study on Crack Detection of Pipelines Using Piezoceramic Transducers

Cited by 24 publications

References 29 publications

Structural Health Monitoring Using Metal Wire Based Piezo-Impedance Transducer

Structural Health Monitoring Using Metal Wire Based Piezo-Impedance Transducer

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers

Experimental Damage Identification of a Model Reticulated Shell

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