Anatomy of flexoelectricity in micro plates with dielectrically highly/weakly and mechanically complaint interface

Singhal, Abhinav; Sahu, Sanjeev A.; Nirwal, Sonal; Chaudhary, Soniya

doi:10.1088/2053-1591/ab3f52

Cited by 16 publications

(5 citation statements)

References 50 publications

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“…The actuator network consists of eight PZT wafers (7 mm diameter and 0.2 mm thickness, Steminc SM412 with PZT-5A material, piezoelectric constant d 33 450 × 10 −12 m/V, electromechanical coupling coefficient k 31 0.35, https://www.steminc.com/PZT/en/). They are bonded on the plate surface using M-Bond 200 adhesive as a very thin layer (Chaudhary et al, 2018; Giurgiutiu, 2005; Sohn and Lee, 2009) to minimize influence on wave generation (Nirwal et al, 2019; Singhal et al, 2019b). For proof of concept study, the PZTs are arranged uniformly along a circle with its center being defined as the coordinate origin (45° angular spacing between actuators).…”

Section: Detection Setup and Acquisition Of Dispersion Curvesmentioning

confidence: 99%

Lamb wave imaging with actuator network for damage quantification in aluminum plate structures

2020

Journal of Intelligent Material Systems and Structures

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Lamb waves have been widely used for damage detection on plate-like structures. However, there are still considerable interests on quantifying damage with complex profile. In this article, quantification of complex damage in plate-like structures using a network of actuators and time-space Lamb wavefield is investigated. The actuator network inspection system is implemented with multiple PZT transducers for Lamb wave actuation in round robin pattern and scanning laser Doppler vibrometer for wavefield sensing. The PZT network is arranged in a way that the target area is fully enclosed and Lamb waves come to the damage from all directions. Waves induced by the damage are subsequently obtained through frequency-wavenumber filtering, using the experimentally acquired dispersion curves presented in the paper. The filtered waves from all wave actuators are then used to generate a synthetic image of the damage being inspected. Two cases of complex damage are evaluated on aluminum plates, mass loss with triangular profile and mass addition with a three-letter cluster profile. Our results show that the damages are not only detected but also their profiles are clearly outlined in the images. We believe the subject methods provide improved evaluation of damage profile for Lamb wavefield based damage quantification.

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Section: Detection Setup and Acquisition Of Dispersion Curvesmentioning

confidence: 99%

Lamb wave imaging with actuator network for damage quantification in aluminum plate structures

2020

Journal of Intelligent Material Systems and Structures

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“…Kumar and Harsha (2021c, 2021d) studies the vibration behavior of the functionally graded piezoelectric perfect/porous plate under thermo-electrical and electromechanical loading conditions. Singhal et al (2018a, 2018b, 2019a, 2019b, 2021), Saroj et al (2019), and Singhal and Sahu (2017) studied the different types of surface wave on the different smart material based composite plates and used the solution method is the analytical/approximation. Ebrahimi et al (2021, 2020) investigate the modeling of the magneto-electro elastic analysis of the piezoelectric flexoelectric nanostructures beams resting on the silica aerogel foundations.…”

Section: Introductionmentioning

confidence: 99%

Static and vibration response analysis of sigmoid function-based functionally graded piezoelectric non-uniform porous plate

Kumar

Harsha

2022

Journal of Intelligent Material Systems and Structures

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This paper has done static and vibration response analysis of the sigmoid functionally graded piezoelectric (S-FGP) tapered plate under thermo-electric load with different even/uneven type porosity. The governing equations of plate motion are derived using first-order shear deformation theory (FSDT) based displacement fields with Hamilton’s principle, and material property distribution is considered as per sigmoid law in the thickness direction of the FGP plate. The obtained governing equations are solved using the higher-order finite element method (FEM) with nine noded interpolation functions with 63 degrees of freedom (DOFs) per element. Convergence and the comparison study have been performed to exhibit the efficacy of the present study. It is observed that parameters like the non-dimensional center deflection, non-dimensional stress, and non-dimensional frequency are decreased as the material gradient index increases. The positive and negative types of electric loading have considerable effects on the pre/post type buckling configuration of the porous S-FGP tapered plate under thermal effect. The present analysis results can be used in the various smart structure application made of porous FGP materials.

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“…In the area of structures and materials, wave propagation-based tools have found increasing applications, especially in structural health monitoring and active control of vibrations and noise (Achenbach, 1973). Regarding the analysis of traveling plane waves across structures consisting of piezoelectric and FGM elements, there are several studies in the literature (Abad and Rouzegar, 2019; Berezovski et al, 2003; Chaudhary et al, 2017, 2018, 2019; Eskandari and Shodja, 2008; Nirwal et al, 2019; Qian et al, 2008; Sahu et al, 2018; Saroj et al, 2019; Singh et al, 2018; Singhal and Sahu, 2017; Singhal et al, 2018a, 2018b, 2019a, 2019b). As notable examples, Singhal et al (2018a, 2018b) used Wentzel-Kramers-Brillouin (WKB) and Liouville-Green (LG) analytical approaches to study surface waves in piezoelectric composite structures.…”

Section: Introductionmentioning

confidence: 99%

On wave propagation and free vibration of piezoelectric sandwich plates with perfect and porous functionally graded substrates

Askari

Brusa

Delprete

2022

Journal of Intelligent Material Systems and Structures

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This paper aims to develop analytical solutions for wave propagation and free vibration of perfect and porous functionally graded (FG) plate structures integrated with piezoelectric layers. The effect of porosities, which occur in FG materials, is rarely reported in the literature of smart FG plates but included in the present modeling. The modified rule of mixture is therefore considered for variation of effective material properties within the FG substrate. Based on a four-variable higher-order theory, the electromechanical model of the system is established through the use of Hamilton’s principle, and Maxwell’s equation. This theory drops the need of any shear correction factor, and results in less governing equations compared to the conventional higher-order theories. Analytical solutions are applied to the obtained equations to extract the results for two investigations: (I) the plane wave propagation of infinite smart plates and (II) the free vibration of smart rectangular plates with different boundary conditions. After verifying the model, extensive numerical results are presented. Numerical results demonstrate that the wave characteristics of the system, including wave frequency and phase velocity along with the natural frequencies of its bounded counterpart, are highly influenced by the plate parameters such as power-law index, porosity, and piezoelectric characteristics.

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Anatomy of flexoelectricity in micro plates with dielectrically highly/weakly and mechanically complaint interface

Cited by 16 publications

References 50 publications

Lamb wave imaging with actuator network for damage quantification in aluminum plate structures

Lamb wave imaging with actuator network for damage quantification in aluminum plate structures

Static and vibration response analysis of sigmoid function-based functionally graded piezoelectric non-uniform porous plate

On wave propagation and free vibration of piezoelectric sandwich plates with perfect and porous functionally graded substrates

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