Title :
The non-rigid surface acoustic concave mirror model and sound field analysis
Author :
Zhu, Guangping ; Sun, Hui ; Li, Gen ; Wu, Yingzi
Author_Institution :
Coll. of Underwater Acoust. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
The focused acoustic field of impedance surface acoustic concave reflector was studied by theoretical calculation. The influence of the different material parameters of reflector covering layers to the focused intensity and the beam partner were analyzed. The results showed that the main influencing factors to the focused acoustic field characteristics are the real part of admittance when the real part increase, the reflector focus ability reduced largely. But it is less influenced to the width of main lobe, and the side-lobe is decreased.
Keywords :
acoustic field; acoustic focusing; surface acoustic wave devices; underwater sound; admittance; focused acoustic field; impedance surface acoustic concave reflector; nonrigid surface acoustic concave mirror model; sound field analysis; Lenses; Zinc; acoustic concave mirror; model; non-rigid surface; sound field;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013311
