A Review of PZT Patches Applications in Submerged Systems

Presas, Alexandre; Luo, Yongyao; Wang, Zhengwei; Valentín, David; Egusquiza, Mònica

doi:10.3390/s18072251

Cited by 35 publications

(15 citation statements)

References 115 publications

(142 reference statements)

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“…They can be conveniently arranged as a network of sensors to record multipoint measurements under and on the surface of the host structure. One prominent feature of PZT transducers for damage detection is that their performance does not deteriorate even when the damage occurs in its vicinity [6,9]. Lamb-wave-based damage detection techniques have employed different arrangements of PZT transducers to actuate and sense the wave propagation.…”

Section: Introductionmentioning

confidence: 99%

Lamb-Wave-Based Multistage Damage Detection Method Using an Active PZT Sensor Network for Large Structures

Hameed

Chen

et al. 2019

Sensors

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A multistage damage detection method is introduced in this work that uses piezoelectric lead zirconate titanate (PZT) transducers to excite/sense the Lamb wave signals. A continuous wavelet transformation (CWT), based on the Gabor wavelet, is applied to accurately process the complicated wave signals caused by the damage. For a network of transducers, the damage can be detected in one detection cell based on the signals scattered by the damage, and then it can be quantitatively estimated by three detection stages using the outer tangent circle and least-squares methods. First, a single-stage damage detection method is carried out by exciting a transducer at the center of the detection cell to locate the damaged subcell. Then, the corner transducers are excited in the second and third stages of detection to improve the damage detection, especially the size estimation. The method does not require any baseline signal, and it only utilizes the same arrangement of transducers and the same data processing technique in all stages. The results from previous detection stages contribute to the improvement of damage detection in the subsequent stages. Both numerical simulation and experimental evaluation were used to verify that the method can accurately quantify the damage location and size. It was also found that the size of the detection cell plays a vital role in the accuracy of the results in this Lamb-wave-based multistage damage detection method.

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Section: Introductionmentioning

confidence: 99%

Lamb-Wave-Based Multistage Damage Detection Method Using an Active PZT Sensor Network for Large Structures

Hameed

Chen

et al. 2019

Sensors

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“…Different vibration control strategies are used to study vortex-induced vibrations of a bridge deck [4][5][6], building structure [7][8][9][10][11][12], and other structures [13][14][15]. It is worth mentioning that scholars have carried out much research on piezoelectric-based vibration control [16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Time-Delayed Feedback Control of Piezoelectric Elastic Beams under Superharmonic and Subharmonic Excitations

Jian

Xiang

et al. 2019

Applied Sciences

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The time-delayed displacement feedback control is provided to restrain the superharmonic and subharmonic response of the elastic support beams. The nonlinear equations of the controlled elastic beam are obtained with the help of the Euler–Bernoulli beam principle and time-delayed feedback control strategy. Based on Galerkin method, the discrete nonlinear time-delayed equations are derived. Using the multiscale method, the first-order approximate solutions and stability conditions of three superharmonic and 1/3 subharmonic resonance response on controlled beams are derived. The influence of time-delayed parameters and control gain are obtained. The results show that the time-delayed displacement feedback control can effectively suppress the superharmonic and subharmonic resonance response. Selecting reasonably the time-delayed quantity and control gain can avoid the resonance region and unstable multi-solutions and improve the efficiency of the vibration control. Furthermore, with the purpose of suppressing the amplitude peak and governing the resonance stability, appropriate feedback gain and time delay are derived.

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“…Piezoelectric patches (PZTp) were widely used in the past [29] in order to excite structures, and also used as energy harvesters [30,31]. Due to the piezoelectric effect [32], PZTps are deformed when a voltage is applied to them.…”

Section: Introductionmentioning

confidence: 99%

Experimental-Numerical Design and Evaluation of a Vibration Bioreactor Using Piezoelectric Patches

Valentín

Roehr

Presas

et al. 2019

Sensors

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In this present study, we propose a method for exposing biological cells to mechanical vibration. The motive for our research was to design a bioreactor prototype in which in-depth in vitro studies about the influence of vibration on cells and their metabolism can be performed. The therapy of cancer or antibacterial measures are applications of interest. In addition, questions about the reaction of neurons to vibration are still largely unanswered. In our methodology, we used a piezoelectric patch (PZTp) for inducing mechanical vibration to the structure. To control the vibration amplitude, the structure could be excited at different frequency ranges, including resonance and non-resonance conditions. Experimental results show the vibration amplitudes expected for every frequency range tested, as well as the vibration pattern of those excitations. These are essential parameters to quantify the effect of vibration on cell behavior. Furthermore, a numerical model was validated with the experimental results presenting accurate results for the prediction of those parameters. With the calibrated numerical model, we will study in greater depth the effects of different vibration patterns for the abovementioned cell types.

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A Review of PZT Patches Applications in Submerged Systems

Cited by 35 publications

References 115 publications

Lamb-Wave-Based Multistage Damage Detection Method Using an Active PZT Sensor Network for Large Structures

Lamb-Wave-Based Multistage Damage Detection Method Using an Active PZT Sensor Network for Large Structures

Time-Delayed Feedback Control of Piezoelectric Elastic Beams under Superharmonic and Subharmonic Excitations

Experimental-Numerical Design and Evaluation of a Vibration Bioreactor Using Piezoelectric Patches

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