Characterization of a Piezoelectric Acoustic Sensor Fabricated for Low-Frequency Applications: A Comparative Study of Three Methods

Campo-Valera, María; Asorey-Cacheda, Rafael; Rodríguez‐Rodríguez, Ignacio; Villó-Pérez, Isidro

doi:10.3390/s23052742

Cited by 10 publications

(2 citation statements)

References 45 publications

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“…The Receiving Voltage Response (RVR) of a microphone is defined as the output voltage generated by the transducer per μPa of sound pressure as a function of frequency [36,37]. It is described by following equation where V out is the output voltage, P(d) is the acoustic pressure in spesific distance.…”

Section: Sound Pressure Level (Spl)mentioning

confidence: 99%

Underwater acoustic performance of SiC foam ceramic materials

et al. 2023

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One of the major tasks of the underwater warfare is to detect underwater objects such as vehicles, vessels, weapons and equipment. The conduct of underwater warfare mostly depends upon the advancement of detection and identification sensors and materials. The wide variation in types and characteristics of materials may affect the underwater detection capabilities despite recently developed sonar systems. The materials with high porosity are known to provide lower acoustical signature than conventional metallic plates in common. The aim of this study is to examine the acoustical signature and the efficiency of open celled SiC foam ceramics as covering and/or casing material for naval mines. Sonar frequencies widely used in mine countermeasure operations for detection purposes, 80 kHz, 85 kHz, 90khZ, 95 kHz and 100 kHz were applied to the acoustic tests. The experimental results obtained from the study shows that the SiC foam ceramic plate leads a 19,2% reduction in reflection, 90,5% and 96% lower values are obtained in transmission and 78,4% and 68,6% lower values are obtained at 60° and 30° in scattering compared to the reference steel plate. Article Highlights This study investigates underwater acoustic performance of open celled SiC foam ceramics the range of 80–100 kHz in the acoustic test pool environment for the very first time. Highly tortuose and porous structure of open celled SiC foam ceramic leads a considerable decrease in scattering, reflection and transmission properties. The study reveals that SiC foams ceramics are potential candidates in reducing acoustical signature as covering and/or casing material for future naval mine applications.

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Section: Sound Pressure Level (Spl)mentioning

confidence: 99%

Underwater acoustic performance of SiC foam ceramic materials

et al. 2023

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“…Piezoelectric materials possess a unique capacity for bidirectional energy conversion [1], playing a vital role in applications like sensors [2], transducers [3], actuators [4], and energy harvesting devices [5]. Piezoelectric materials can be incorporated into the design of intelligent structures for sensing purposes, enabling the conversion of mechanical stress into an electrical voltage signal [6].…”

Section: Introductionmentioning

confidence: 99%

A Strain-Based Methodology for the Estimation of Piezoelectric Coefficients

Ahmad

2024

IEEE Access

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Characterizing piezoelectric coefficients d33 and d31 is crucial in diverse applications. Here, an extensive analysis of the correlation between d33 and d31 in piezoelectric materials, employing strain relationships is presented. Utilizing the fundamental principles of stress and volume conservation, in conjunction with a capacitance voltage profile, d33 is extracted in terms of measured capacitance and the applied bias. This methodology promises advancements in piezoelectric material understanding and engineering across various technological applications. The experimental framework utilized PZT thin film piezoelectric materials of 300 nm thickness with predetermined d33 value of 200 pm/Volts, where measurements were carried out to monitor changes in capacitance under varying poling conditions. This method effectively led to the determination of the d33 coefficient, which was approximately measured at 208 pm/Volt. This approach offers a rapid and efficient method for estimating piezoelectric coefficients, promising advancements in the characterization and application of piezoelectric materials.INDEX TERMS Characterizations, electrical capacitance, piezoelectric coefficient, PZT, strain.

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Exploring the Parametric Effect in Nonlinear Acoustic Waves

Campo-Valera,

Villó-Pérez,

Fernández-Garrido

et al. 2023

IEEE Access

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Nonlinear acoustics is a critical area of study with practical applications in fields such as underwater communications, medical imaging, non-destructive testing, and sonar. This paper offers a comprehensive analysis of the Westervelt and Burgers equations, along with their related boundary problems, and investigates the characteristics of parametric generation, thereby making substantial advancements in the theoretical comprehension of nonlinear acoustic waves. Our analysis sheds new light on the dynamics of nonlinear acoustic waves and their behavior in various media, providing valuable insights into the physics of sound propagation. Finally, parametric effects can be intelligently exploited for communication applications. Thus, through the appropriate selection of encodings, it is possible to develop underwater acoustic communication systems with greater directivity and range than classical systems.

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Characterization of a Piezoelectric Acoustic Sensor Fabricated for Low-Frequency Applications: A Comparative Study of Three Methods

Cited by 10 publications

References 45 publications

Underwater acoustic performance of SiC foam ceramic materials

Underwater acoustic performance of SiC foam ceramic materials

A Strain-Based Methodology for the Estimation of Piezoelectric Coefficients

Exploring the Parametric Effect in Nonlinear Acoustic Waves

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