Autor: Lyamshev, L. M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fractals in underwater acoustics
Autorzy:: Lyamshev, L. M.
Powiązania:: https://bibliotekanauki.pl/articles/332518.pdf
Data publikacji:: 1997
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: The concept of fractals and their applications for underwater acoustics are discussed. Waves scattering by a fractal surface is considered. Ray chaos in the case of waves propagation in inhomogeneous underwater waveguides is discussed. Results of investigation of multifractal characteristics of flow noise, cavitation noise (acoustic turbulence) and the noise emitted by elastic structures are given.
Źródło:: Hydroacoustics; 1997, 1; 251-256
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Nonspecular reflection, resonance scattering and radiation of sound by elastic bodies in water
Autorzy:: Lyamshev, L. M.
Powiązania:: https://bibliotekanauki.pl/articles/331527.pdf
Data publikacji:: 1999
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: Results of studies of sound reflection by plates and shells immersed in water are given. The are incidence angles of sound waves upon plates or shells, under which strong reflection backwards, i.e. nonspecular reflection, is observed. Physical nature of nonspecular reflection is discussed and its theory is given. It is demonstrated that nonspecular reflection is accompanied by the effect of spatial-frequency resonance. It is revealed that resonance scattering and radiation of sound by shells immersed in water is connected with the effect of spatial frequency resonance. The discussed effects can play the dominant role in formation of underwater acoustic fields.
Źródło:: Hydroacoustics; 1999, 2; 297-300
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Fractal laws of sound backscattering by sea surface and bottom
Autorzy:: Lyamshev, L. M.
Stepnowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/331953.pdf
Data publikacji:: 2001
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: It is demonstrated that the known empirical frequency-angle dependence that characterizes the intensity of high-frequency backscattering of sound by a rough sea surface and is obtained on the basis of generalization of results of many experiments conducted by various researchers under different conditions and in different sea regions has a fractal character. High-frequency backscattering of sound by the sea bottom is also characterized by fractal laws in a broad range of frequency and spatial scales.
Źródło:: Hydroacoustics; 2001, 4; 143-148
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Laser photoacoustic monitoring of piezoelectric elements of hydroacoustic transducers
Autorzy:: Lyamshev, M. L.
Powiązania:: https://bibliotekanauki.pl/articles/332749.pdf
Data publikacji:: 2001
Wydawca:: Polskie Towarzystwo Akustyczne
Opis:: Excitation of flexural vibrations of a bounded thin plate by laser radiation is considered. The relations connecting the parameters of the laser radiation and the plate are obtained. Opportunities for remote laser photoacoustic monitoring and identification of piezoelectric elements of hydroacoustic transducers (arrays) are discussed.
Źródło:: Hydroacoustics; 2001, 4; 149-152
1642-1817
Pojawia się w:: Hydroacoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

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