Varenikova A.Yu., Chernov N.N., Kravchuk D.A.
UDK 534.7
https://doi.org/10.56408/2412-8627.2026.12.2.009
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Varenikova, A.Yu. Application of nonlinear acoustic effects for visualization of internal structures of biological tissues / A.Yu. Varenikova, N.N. Chernov, D.A. Kravchuk // Noise Theory and Practice. – 2026. – Vol. 12, No. 2 (45). – P. 109-121. – DOI: 10.56408/2412-8627.2026.12.2.009
acoustic nonlinear parameter, acoustic visualization, second harmonic, Burgers equation, nonlinear effects, parametric interaction, generation of higher harmonics
The elastic and nonlinear properties of various media, including biological media, have a significant impact on the transmission of acoustic waves, which makes it possible to conduct more accurate studies of the structures of various objects.
Nonlinear acoustic effects make it possible to more accurately distinguish the structural characteristics of biological objects by using an acoustic nonlinear parameter as a structural characteristic.
When studying nonlinear effects, it is necessary not only to consider the processes of their occurrence and assess the impact on the measurement information obtained, but also to distinguish between the types of acoustic nonlinearity.
Nonlinear effects such as parametric interaction and generation of harmonic components determine the further technical implementation of acoustic visualization systems.
The paper considers the features of each type of acoustic nonlinearity used in the analysis of nonlinear effects of acoustic wave interaction. The features of acoustic visualization systems based on the parametric interaction of acoustic waves, expressed in the occurrence of combined total and difference frequencies, are considered. The features of the generation of tissue harmonics and their effect on the detected radiation, depending on the type and thickness of the medium, are investigated.
Varenikova A.Yu.
Institute of Nanotechnology, Electronics, and Instrument Engineering at the Southern Federal University, Taganrog, Russia
Chernov N.N.
Institute of Nanotechnology, Electronics, and Instrument Engineering at the Southern Federal University, Taganrog, Russia
Kravchuk D.A.
Institute of Nanotechnology, Electronics, and Instrument Engineering at the Southern Federal University, Taganrog, Russia
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