Development of vector hydrophone using thickness–shear mode piezoelectric single crystal accelerometer

Pyo, Seonghun; Kim, Jungsuk; Kim, Hoeyong; Roh, Yongrae

doi:10.1016/j.sna.2018.09.066

Cited by 22 publications

(18 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Infinite boundary conditions were applied to all the water surfaces to prevent acoustic reflection at the physical domain boundaries. The dimensions of the hexagonal mesh elements in Figure 1 were less than 0.1% of the wavelength; such a fine mesh results in a sufficient accuracy for analysis [15].…”

Section: Fea Model Of the Vector Sensormentioning

confidence: 99%

“…Therefore, a dipole beam pattern can be produced along the dominant accelerometer axis [13,14] by using an axial accelerometer. Combining the dipole beam pattern with that of an omnidirectional sensor having the same sensitivity in all the directions yields a cardioid beam pattern to provide directional information of an acoustic source [15,16,17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Design and Optimization of a Compressive-Type Vector Sensor Utilizing a PMN-28PT Piezoelectric Single-Crystal

Yeo

Choi

Jin

et al. 2019

Sensors

Self Cite

View full text Add to dashboard Cite

Underwater sensors that detect the distance and direction of acoustic sources are critical for surveillance monitoring and target detection in the water. Here, we propose an axial vector sensor that utilizes a small (~1 cm3) compressive-type piezoelectric accelerometer using piezoelectric single crystals. Initially, finite element analysis (FEA) was used to optimize the structure that comprised piezoelectric Pb(Mb1/3Nb2/3)O3-28%PbTiO3 single crystals on a tungsten seismic mass. The receiving voltage sensitivity (RVS) was enhanced through geometric optimization of the thickness and sensing area of the piezoelectric material and the seismic mass. The estimated maximum RVS of the optimized vector sensor was −212 dB. FEA simulations and practical measurements were used to verify the directivity of the vector sensor design, which exhibited a dipole pattern. The dipole beam pattern was used to obtain cardioid patterns using the simulated and measured results for comparison. The results clearly showed the feasibility of using the proposed piezoelectric single-crystal accelerometer for a compressive-type vector sensor.

show abstract

Section: Fea Model Of the Vector Sensormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Design and Optimization of a Compressive-Type Vector Sensor Utilizing a PMN-28PT Piezoelectric Single-Crystal

Yeo

Choi

Jin

et al. 2019

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, numerous efforts have been devoted toward the development of unique 3D structures with additional functionalities. [ 1–3 ] In this type of fusion technique, called 4D printing, functionality can be induced by adding a fourth axis to 3D spatial axes. [ 4 ] In particular, many researchers have attempted the combination of structural functionalities with the inherent functionalities of shape memory materials to achieve shape change or to induce the shape memory effect (SME).…”

Section: Introductionmentioning

confidence: 99%

3D and 4D Printing of Complex Structures of FeMnSi‐Based Shape Memory Alloy Using Laser Powder Bed Fusion

Kim

Ferretto

Leinenbach

et al. 2022

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…A vector hydrophone was developed for a towed array sonar system using a shear-type accelerometer. It has the highest feasible RVS (receiving voltage sensitivity) over the desired frequency range in comparison with other types of vector hydrophones such as the multimode hydrophone [18]. Teng et al proposed an underwater, low-frequency, high-power transducer with a controllable transmitting beam by combining the directional beam transmission theory with the currently applied mosaic ceramic ring structure [19].…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of a Stacked Three-Phase Piezoelectric Composites Ring Array Underwater Ultrasound Transducer

2021

View full text Add to dashboard Cite

A stacked three-phase piezoelectric composites ring array underwater ultrasound transducer was developed in this paper. The circular structure of three-phase piezoelectric composite with a large open angle was improved based on the 1-3 piezoelectric composites. The structure size of the transducer’s sensitive component was designed by using ANSYS simulation software, and the single-ring samples of three-phase piezoelectric composites with different thicknesses were fabricated. Based on the bandwidth broadening theory of multimode coupled vibration, the piezoelectric composite ring-shaped sensitive component was fabricated by the piezoelectric composite curved-surface-forming process. According to the design structure of the transducer, the stacked three-phase piezoelectric composites ring array underwater ultrasound transducer was processed. The experimental results show that the maximum transmission voltage response is 154 dB, the open angle of the horizontal beam reaches 360°, and the bandwidth of −3 dB is 86 kHz. The developed transducers achieved a high frequency, broadband, and large open angle to radiate sound waves.

show abstract

Development of vector hydrophone using thickness–shear mode piezoelectric single crystal accelerometer

Cited by 22 publications

References 14 publications

The Design and Optimization of a Compressive-Type Vector Sensor Utilizing a PMN-28PT Piezoelectric Single-Crystal

The Design and Optimization of a Compressive-Type Vector Sensor Utilizing a PMN-28PT Piezoelectric Single-Crystal

3D and 4D Printing of Complex Structures of FeMnSi‐Based Shape Memory Alloy Using Laser Powder Bed Fusion

Design and Fabrication of a Stacked Three-Phase Piezoelectric Composites Ring Array Underwater Ultrasound Transducer

Contact Info

Product

Resources

About