Low-frequency ultrasonic Bessel-like collimated beam generation from radial modes of piezoelectric transducers
Abstract
We present a very simple approach to generate a collimated ultrasonic beam that exploits the natural Bessel-like vibration pattern of the radial modes of a piezoelectric disc with lateral clamping. This eliminates the need for the conventional annular Bessel pattern of the electrodes with individual electrode excitation on the piezo-disc, thus simplifying the transducer design. Numerical and experimental studies are carried out to investigate the Bessel-like vibration patterns of these radial modes showing an excellent agreement between these two studies. Measured ultrasonic beam- pro les in water from the radial modes con rm the profile to be a Bessel beam. Collimated beam generation from radial modes is investigated using a coupled electromechanical finite-element model. It is found that clamping the lateral edges of piezoelectric transducers results in a high-degree of collimation with practically no side-lobes similar to a parametric array beam. Ultrasonic beam- profile measurements in water with both free and clamped piezoelectric transducer are presented. The collimated beam generation using the present technique of using the laterally clamped radial modes finds significant applications in low-frequency imaging through highly attenuating materials.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1414098
- Alternate Identifier(s):
- OSTI ID: 1348019
- Report Number(s):
- LA-UR-16-29108
Journal ID: ISSN 0003-6951; APPLAB; TRN: US1800632
- Grant/Contract Number:
- AC52-06NA25396; DG08
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 110; Journal Issue: 6; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Energy Sciences
Citation Formats
Chillara, Vamshi Krishna, Pantea, Cristian, and Sinha, Dipen N. Low-frequency ultrasonic Bessel-like collimated beam generation from radial modes of piezoelectric transducers. United States: N. p., 2017.
Web. doi:10.1063/1.4975800.
Chillara, Vamshi Krishna, Pantea, Cristian, & Sinha, Dipen N. Low-frequency ultrasonic Bessel-like collimated beam generation from radial modes of piezoelectric transducers. United States. https://doi.org/10.1063/1.4975800
Chillara, Vamshi Krishna, Pantea, Cristian, and Sinha, Dipen N. Mon .
"Low-frequency ultrasonic Bessel-like collimated beam generation from radial modes of piezoelectric transducers". United States. https://doi.org/10.1063/1.4975800. https://www.osti.gov/servlets/purl/1414098.
@article{osti_1414098,
title = {Low-frequency ultrasonic Bessel-like collimated beam generation from radial modes of piezoelectric transducers},
author = {Chillara, Vamshi Krishna and Pantea, Cristian and Sinha, Dipen N.},
abstractNote = {We present a very simple approach to generate a collimated ultrasonic beam that exploits the natural Bessel-like vibration pattern of the radial modes of a piezoelectric disc with lateral clamping. This eliminates the need for the conventional annular Bessel pattern of the electrodes with individual electrode excitation on the piezo-disc, thus simplifying the transducer design. Numerical and experimental studies are carried out to investigate the Bessel-like vibration patterns of these radial modes showing an excellent agreement between these two studies. Measured ultrasonic beam- pro les in water from the radial modes con rm the profile to be a Bessel beam. Collimated beam generation from radial modes is investigated using a coupled electromechanical finite-element model. It is found that clamping the lateral edges of piezoelectric transducers results in a high-degree of collimation with practically no side-lobes similar to a parametric array beam. Ultrasonic beam- profile measurements in water with both free and clamped piezoelectric transducer are presented. The collimated beam generation using the present technique of using the laterally clamped radial modes finds significant applications in low-frequency imaging through highly attenuating materials.},
doi = {10.1063/1.4975800},
journal = {Applied Physics Letters},
number = 6,
volume = 110,
place = {United States},
year = {Mon Feb 06 00:00:00 EST 2017},
month = {Mon Feb 06 00:00:00 EST 2017}
}
Web of Science
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Works referencing / citing this record:
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