TY - GEN
T1 - Resonant Acoustic Scattering by Spherical Air-Filled Elastic Shells Submerged in a Fluid
T2 - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
AU - Chernokozhin, Evgeny
AU - Roger-Eitan, Iris
AU - Gleizer, Anna
AU - Boag, Amir
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Theoretical model of acoustic scattering by submerged thin elastic air-filled spherical shells is compared with the results of direct measurements in an underwater test facility. Elastic resonances arising in elastic shells significantly affect the scattering, as demonstrated both theoretically and experimentally. Measurements were carried out in two frequency ranges. Two kinds of resonances - extensional and bending - were expected. In the low-frequency range, a predicted sharp drop in back scattering is observed, which corresponds to an extensional resonance mode. In the high frequency region, an expected wide resonance zone with enhanced scattering was found, although differing from the theoretically predicted distribution of resonances, which may be attributed to slight imperfection of the shell used in the experiment.
AB - Theoretical model of acoustic scattering by submerged thin elastic air-filled spherical shells is compared with the results of direct measurements in an underwater test facility. Elastic resonances arising in elastic shells significantly affect the scattering, as demonstrated both theoretically and experimentally. Measurements were carried out in two frequency ranges. Two kinds of resonances - extensional and bending - were expected. In the low-frequency range, a predicted sharp drop in back scattering is observed, which corresponds to an extensional resonance mode. In the high frequency region, an expected wide resonance zone with enhanced scattering was found, although differing from the theoretically predicted distribution of resonances, which may be attributed to slight imperfection of the shell used in the experiment.
KW - Acoustic scattering
KW - Elastic resonances
KW - Elastic shell
KW - Spherical shell
KW - Underwater acoustics
UR - http://www.scopus.com/inward/record.url?scp=85123698966&partnerID=8YFLogxK
U2 - 10.1109/COMCAS52219.2021.9629095
DO - 10.1109/COMCAS52219.2021.9629095
M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???
AN - SCOPUS:85123698966
T3 - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
SP - 130
EP - 131
BT - 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 1 November 2021 through 3 November 2021
ER -