- Tytuł:
- Low- and high-frequency elastic scattering analysis of fluid-filled, flat-endcapped cylindrical shells proud on a sandy seabed
- Autorzy:
-
Tesei, A.
Groen, J. - Powiązania:
- https://bibliotekanauki.pl/articles/331639.pdf
- Data publikacji:
- 2008
- Wydawca:
- Polskie Towarzystwo Akustyczne
- Tematy:
-
sandy seabed
at-sea scattering data
hydroacoustics - Opis:
- This work presents the analysis of at-sea scattering data by a man-made target which supports the excitation of strong structural waves or resonances, not only at low but even at high frequency (ka>100). The object is a water-filled, flat-endcapped, 2m-long, steel cylindrical shell, measured both at low frequency (2-10 kHz) and at high frequency (120 kHz), where different elastic phenomena are supported and identified. In particular, in the high-frequency sonar images obtained with an AUV-mounted synthetic aperture sonar, significant elastic effects clearly appear, which are interpreted as echoes of a shear wave travelling axially along the cylindrical shell. For interpretation of sonar images it is crucial to understand and predict these supplementary scattering mechanisms.
- Źródło:
-
Hydroacoustics; 2008, 11; 388-400
1642-1817 - Pojawia się w:
- Hydroacoustics
- Dostawca treści:
- Biblioteka Nauki
Artykuł