Detection of physical signal and time-frequency analysis owing to the impact on rubber material using a piezoelectric sensor

Hiremath, Shivashankar; Kim, Tae-Won

doi:10.1007/s12206-024-0424-2

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…An electric field emerges between the two metallic plates when a potential difference is applied across them, if there is a separation between the plates, as shown in Figure 2b. The equation for the electrostatic energy (U) of the continuous charge distribution, which forms the electric field (E) in each volume (v), is given as: The maximum shear stress is calculated using Equations ( 5)- (7).…”

Section: Energy Storage In the Capacitive Modelmentioning

confidence: 99%

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Optimizing Capacitive Pressure Sensor Geometry: A Design of Experiments Approach with a Computer-Generated Model

Keshyagol,

Hiremath,

H. M.

et al. 2024

Sensors

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This study presents a comprehensive investigation into the design and optimization of capacitive pressure sensors (CPSs) for their integration into capacitive touch buttons in electronic applications. Using the Finite Element Method (FEM), various geometries of dielectric layers were meticulously modeled and analyzed for their capacitive and sensitivity parameters. The flexible elastomer polydimethylsiloxane (PDMS) is used as a diaphragm, and polyvinylidene fluoride (PVDF) is a flexible material that acts as a dielectric medium. The Design of Experiment (DoE) techniques, aided by statistical analysis, were employed to identify the optimal geometric shapes of the CPS model. From the prediction using the DoE approach, it is observed that the cylindrical-shaped dielectric medium has better sensitivity. Using this optimal configuration, the CPS was further examined across a range of dielectric layer thicknesses to determine the capacitance, stored electrical energy, displacement, and stress levels at uniform pressures ranging from 0 to 200 kPa. Employing a 0.1 mm dielectric layer thickness yields heightened sensitivity and capacitance values, which is consistent with theoretical efforts. At a pressure of 200 kPa, the sensor achieves a maximum capacitance of 33.3 pF, with a total stored electric energy of 15.9 × 10−12 J and 0.468 pF/Pa of sensitivity for 0.1 dielectric thickness. These findings underscore the efficacy of the proposed CPS model for integration into capacitive touch buttons in electronic devices and e-skin applications, thereby offering promising advancements in sensor technology.

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Section: Energy Storage In the Capacitive Modelmentioning

confidence: 99%

“…Conversely, PVDF, which is a thermoplastic polymer, exhibits distinctive piezoelectric and pyroelectric characteristics [ 6 ]. These unique properties make PVDF an ideal material for applications such as sensors, actuators, and energy-harvesting devices [ 7 , 8 ]. Therefore, PVDF was used as the dielectric material in this study.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Capacitive Pressure Sensor Geometry: A Design of Experiments Approach with a Computer-Generated Model

Keshyagol,

Hiremath,

H. M.

et al. 2024

Sensors

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Impact force measurement by in-plane piezoelectricity of polyvinylidene fluoride films

Gao,

Sakata,

Iwamoto

et al. 2024

International Journal of Mechanical Sciences

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Impact contact mechanical characteristics assessment of piezoelectric material using the semi-analytical method

Lin,

Wang,

Wang

et al. 2024

Mathematics and Mechanics of Solids

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The objective of this paper is to study the impact mechanical performance of piezoelectric materials. Therefore, the three-dimensional frictionless impact contact between a piezoelectric half-space and a conducting rigid impactor is investigated. A semi-analytical impact contact model is developed based on the second-order Newmark method and discrete convolution-fast Fourier transform algorithm. The unknown impact reaction force of the impactors is obtained by exploiting the conjugate gradient method and the dichotomy method. A detailed parametric investigation is conducted on different types of impactors to explore the influences of several parameters, including electric charge density, time step, and impact velocity. The results reveal that the impact velocity and electric charge density have significant effects on the impact response of the piezoelectric material. Higher electric charge densities lead to a smaller impact reaction force, but a larger deformation. The insights gained from this study can be applied to analyze the impact response of charged particles of arbitrary shape on piezoelectric material.

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Detection of physical signal and time-frequency analysis owing to the impact on rubber material using a piezoelectric sensor

Cited by 3 publications

References 22 publications

Optimizing Capacitive Pressure Sensor Geometry: A Design of Experiments Approach with a Computer-Generated Model

Optimizing Capacitive Pressure Sensor Geometry: A Design of Experiments Approach with a Computer-Generated Model

Impact force measurement by in-plane piezoelectricity of polyvinylidene fluoride films

Impact contact mechanical characteristics assessment of piezoelectric material using the semi-analytical method

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