HYDROACOUSTICS
ANNUAL JOURNAL
START NEW VOL 20 SEARCH STATISTICS PAS - GDANSK DIVISION

Comparison or characteristics of focused and non-focused beam

pp. 131-134, vol. 4, 2001

Eugeniusz Kozaczka
Polish Naval Academy, Gdynia, Poland
Technical University of Koszalin, Koszalin, Poland

Gra┼╝yna Grelowska
Polish Naval Academy, Gdynia, Poland

Key words:

Abstract: The paper presents results of comparison of characteristic features of wave of finite amplitude propagating inform of focused or non-focused beam. Some resemblances in both types of beams are pointed out. It occurs mainly due to nonlinear wave distortion during the propagation. In addition, certain differences are indicated, this is the consequence of impact of diffraction in the beam forming process. Findings are illustrated with results of experimental and numerical investigations.

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