Wave propagation in two−layered piezoelectric plates

Cheng, Nai-Chia; Sun, C. T.

doi:10.1121/1.380479

Cited by 37 publications

(10 citation statements)

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“…(4) and (5) under the conditions (6)-(10). Based on the partial wave method [Cheng and Sun (1975)], the solution of Eq. (4) can be assumed as…”

Section: ( )mentioning

confidence: 99%

Rayleigh-Type Wave in A Rotated Piezoelectric Crystal Imperfectly Bonded on a Dielectric Substrate

Nie¹,

Wang²

2019

Computers, Materials &Amp; Continua

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Propagation characteristics of Rayleigh-type wave in a piezoelectric layered system are theoretically investigated. The piezoelectric layer is considered as a cubic crystal with finite thickness rotated about Y-axis and is imperfectly bonded onto a semi-infinite dielectric substrate. The imperfect interface between the two constituents is assumed to be mechanically compliant and dielectrically weakly conducting. The exact dispersion relations for electrically open or shorted boundary conditions are obtained. The numerical results show that the phase velocity of Rayleigh-type wave is symmetric with respect to the cut orientation of 45° and can achieve the maximum propagation speed in this orientation. The mechanical imperfection plays an important role in the dispersion relations, further the normal imperfection can produce a significant reduction of phase velocity comparing with the tangential imperfection. Comparing with the mechanical imperfection the electrical imperfection makes a relatively small reduction of phase velocity of Rayleigh-type wave. The obtained results can provide some fundamentals for understanding of piezoelectric semiconductor and for design and application of piezoelectric surface acoustic wave devices.

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“…(4) and (5) under the conditions (6)-(10). Based on the partial wave method [Cheng and Sun (1975)], the solution of Eq. (4) can be assumed as…”

Section: ( )mentioning

confidence: 99%

Rayleigh-Type Wave in A Rotated Piezoelectric Crystal Imperfectly Bonded on a Dielectric Substrate

Nie¹,

Wang²

2019

Computers, Materials &Amp; Continua

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“…The study of wave propagation inside piezoelectric materials attracted much attention for the application of delay line. The time delay effect was achieved when a piezoelectric element is used to transform the electrical signal into the elastic wave propagating through it [ 69 , 70 ]. Sun and Cheng [ 71 ] studied acoustic wave propagating around a piezoelectric cylinder with thin metallic overlay and showed that the wave propagation characteristics changed with different metallic layers.…”

Section: Analysis and Applications Of Piezoelectric Sensors And Actmentioning

confidence: 99%

Applications of Piezoelectric Materials in Structural Health Monitoring and Repair: Selected Research Examples

2010

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The paper reviews the recent applications of piezoelectric materials in structural health monitoring and repair conducted by the authors. First, commonly used piezoelectric materials in structural health monitoring and structure repair are introduced. The analysis of plain piezoelectric sensors and actuators and interdigital transducer and their applications in beam, plate and pipe structures for damage detection are reviewed in detail. Second, an overview is presented on the recent advances in the applications of piezoelectric materials in structural repair. In addition, the basic principle and the current development of the technique are examined.

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“…Consider the free-wave propagation in the x 2 -direction, expressed in the form (Cheng & Sun 1975) u 2 = Ae ibkx 3 e ik(x 2 ¡vt) ; u 3 = Be ibkx3 e ik(x2¡vt) ; ¿ = Ce ibkx 3 e ik(x 2 ¡vt) ;…”

Section: (Ii) Governing Equations For Piezoelectric Layermentioning

confidence: 99%

Analytical solution of excitation of Lamb waves in plates by inter-digital transducers

Jin

Quek

Wang

2003

Proc. R. Soc. Lond. A

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An analytical method is presented to model the excitation and propagation of Lamb waves by inter-digital transducers (IDTs). The acoustic eld underneath the IDT (i.e. near eld) excited by the IDT was obtained by modelling both the electromechanical coupling e¬ect and the interaction between the IDT and the host plate. The amplitudes of the Lamb waves propagating in the far eld were computed through a mode-expansion method based on the acoustic solution of the near eld excited by the IDT. Experiments were carried out to excite Lamb waves in an aluminium plate. The ratio of amplitudes from experimental results agrees with that from the analytical solution. This analytical method may provide guidance on design of IDTs.

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Wave propagation in two−layered piezoelectric plates

Cited by 37 publications

References 0 publications

Rayleigh-Type Wave in A Rotated Piezoelectric Crystal Imperfectly Bonded on a Dielectric Substrate

Rayleigh-Type Wave in A Rotated Piezoelectric Crystal Imperfectly Bonded on a Dielectric Substrate

Applications of Piezoelectric Materials in Structural Health Monitoring and Repair: Selected Research Examples

Analytical solution of excitation of Lamb waves in plates by inter-digital transducers

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