Comparison of characteristics of focused and non-focused beam

• Autorzy: Kozaczka E. , Grelowska G.
• Języki publikacji: EN

Abstrakty

EN

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.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2001
• Tom: Vol. 4
• Strony: 131--134
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Kozaczka E.

• Polish Naval Academy, Śmidowicza 69, 81-103 Gdynia, POLAND
• Technical University of Koszalin, Koszalin, Poland

autor

Grelowska G.

• Polish Naval Academy, Śmidowicza 69, 81-103 Gdynia, POLAND

Bibliografia

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• 5. Hobaek H., Ystad B., Experimental and numerical investigation of shock wave propagation in the post focal region of a focused sound field, Acustica - acta acustica, 83, 6, 978-986, 1997
• 6. Lockwood J. C., Muir T. G., Blackstock D. T., Directive harmonic generation in the radiation field of a circular piston, J. Acoust. Soc. Am., 53, 4, 1148-1153, 1973
• 7. Shutilov V. A., An introduction to physics of ultrasound, Leningrad University Press, Leningrad 1980