The paper is dedicated to approbation of method for managing location and parameters
of focal spot by changing physical characteristics of matching layer. A method is proposed for
determining the speed of sound in matching layer for adjusting focal spot by calculating layer
thickness-averaged speed of sound in biological tissues on the path of ultrasonic waves. A
description of the experimental setup and research methodology is given. The influence of
changes in the physical parameters of the matching layer on the distribution of the pressure
amplitude in the frontal section of the acoustic field generated by the ultrasonic emitter when
the angle of its inclination to the interface varies is estimated. The experimental data are
compared with the results of mathematical modeling performed with the same input parameters.
The results of calculations of the acoustic field generated by a focusing antenna array in a
layered inhomogeneous medium (simulation layers) are presented and the influence of changes
in the physical characteristics of the matching layer on the spatial distribution of the acoustic
pressure amplitude in the focal region is estimated. The study results showed the possibility of
using a matching layer with calculated parameters to control the location of the focal spot in
the direction of ultrasonic waves propagation. The developed method for correcting the location
of the focal spot can be used both for antenna arrays and for single emitters having the shape of
a spherical segment.
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sistemy MIS-2016». Rostov-na-Donu: izdatel'stvo YUzhnogo federal'nogo universiteta;
2016:211-213.
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puchka cherez izmenyaemuyu sloistuyu strukturu. Inzhenernyj vestnik Dona. 2014;2(29). Available from: http://ivdon.ru/ru/magazine/archive/n2y2014/2411 (accessed:
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Nauka; 1967:149-206.
Dombrugova Elena Georgievna
Email: yhellowhat@yandex.ru
OOO «NPP “Tyazhpressmash-Detal”»
Taganrog, Russian Federation
Chernov Nikolay Nikolaevich
Doctor of Engineering sciences, Professor
Email: nik-chernov@yandex.ru
ORCID |
Southern Federal University, Institute of Nanotechnologies, Electronics and Equipment Engineering, Department of Hydroacoustic and Medical Engineering
Taganrog, Russian Federation
