Energy reflection and transmission characteristics of acoustic waves in a functionally graded piezoelectric plate immersed into non-viscous fluid

Ezzin, Hamdi; Das, Raj; Qian, Zhenghua; Kuznetsova, I. E.

doi:10.1016/j.jsv.2022.117139

Cited by 2 publications

(1 citation statement)

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“…The study aimed to analyze the intricate interactions at these interfaces, shedding light on the behaviour of waves in this complex setup. Ezzin et al [18] conducted an investigation into the reflection and transmission properties of acoustic waves in the FGPM plate immersed in a non-viscous fluid. On a related note, Wang et al [19] applied nonlocal elasticity theory to explore the reflection, dissipation, and transmission behaviours of plane waves within sandwiched functionally graded thermo-electro-elastic nanoplates.…”

Section: Introductionmentioning

confidence: 99%

Reflection and transmission of ultrasonic waves in a layered structure with a functionally graded porous piezoelectric base

Vashishth,

Bareja,

Gupta

2024

Phys. Scr.

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The phenomenon of reflection and transmission of waves offers valuable insights into the internal composition and structural characteristics of materials. This study investigates the reflection and transmission of waves in functionally graded porous piezoelectric materials. These materials, distinguished by their customised electromechanical attributes and gradual property variations, present a promising avenue for optimizing performance across diverse applications, including ultrasonics. The reflection and transmission of ultrasonic waves in a novel structure, consisting of a fluid half-space (FHS) positioned above n porous piezoelectric layers, situated on top of a functionally graded porous piezoelectric half-space (FGPPHS) is studied in this paper. The material properties of FGPPHS are considered to vary along the vertical direction and and resulting equations are solved analytically and numerically. The transfer matrix method is employed to analytically determine the energy ratios and amplitude ratios for reflected and transmitted waves. Numerical computations are performed to study the impacts of frequency, gradation, angle of incidence, and porosity on the energy ratios. Furthermore, the influence of stacking of the number of porous piezoelectric layers above FGPPHS, and the choice of materials (Barium Titanate (BaTiO 3), PZT − 5H, PZT − 7H) in layers and half-space, on the energy ratios are studied. The absolute value of acoustic impedance is plotted for various angles of incidence and porosities. From the graph, it is found that the acoustic impedance can be controlled by adjusting porosity in the structure. This will be helpful in minimizing the energy loss at ceramic-medium interface and improving the mismatch of acoustic impedances at the interfaces of medical ultrasonic imaging devices or underwater sonar detectors, and NDE applications. Further, because of lower acoustic impedance, lower density and stiffness of porous piezoelectric materials, the outcomes of this study will be helpful in designing SAW devices.

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Section: Introductionmentioning

confidence: 99%

Reflection and transmission of ultrasonic waves in a layered structure with a functionally graded porous piezoelectric base

Vashishth,

Bareja,

Gupta

2024

Phys. Scr.

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Reflection and transmission phenomenon of ultrasonic waves in a layered structure of functionally graded porous piezoelectric material

Vashishth,

Bareja

2024

Smart Mater. Struct.

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In this paper, the reflection and transmission characteristics of ultrasonic waves in a structure composed of a fluid half-space (FHS) lying over functionally graded porous piezoelectric (FGPP) layers resting on the FGPP base are studied. Functionally graded porous piezoelectric materials (FGPPM) provide a potential way to optimize performance in a variety of applications, including ultrasonics. They stand out for their customized electromechanical features and progressive property fluctuations. The material parameters of functionally graded porous piezoelectric materials are assumed to change along the thickness direction. The transfer matrix is determined for the FGPP layers. The amplitude and energy ratios have been determined analytically. Numerical computation has been done to assess the effect of the angle of incidence, porosity, frequency, and gradation on reflected and transmitted energy ratios. In addition, the influence of selecting materials such as $BaTiO_3, PZT-5H$, and $PZT-7H$ for the FGPP layers on the energy ratio curves is also demonstrated. The graphical analysis has examined the impact of the number of FGPP layers positioned above the half-space. The variation of the acoustic impedance for various porosities is also plotted. The graph indicates that the porosity in the structure may be changed to regulate the acoustic impedance. This will assist in reducing the energy loss at the ceramic medium interface and useful in underwater sonar detectors and medical ultrasonic imaging equipment, as well as NDE applications.

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Energy reflection and transmission characteristics of acoustic waves in a functionally graded piezoelectric plate immersed into non-viscous fluid

Cited by 2 publications

References 36 publications

Reflection and transmission of ultrasonic waves in a layered structure with a functionally graded porous piezoelectric base

Reflection and transmission of ultrasonic waves in a layered structure with a functionally graded porous piezoelectric base

Reflection and transmission phenomenon of ultrasonic waves in a layered structure of functionally graded porous piezoelectric material

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