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Nearfield effects in acoustic scattering

 

作者: Roger H. Hackman,   M. F. Werby,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1984)
卷期: Volume 75, issue 3  

页码: 1001-1003

 

ISSN:0001-4966

 

年代: 1984

 

DOI:10.1121/1.390659

 

出版商: Acoustical Society of America

 

关键词: sound waves;scattering;solids

 

数据来源: AIP

 

摘要:

We investigate the scattering of the radiation from an acoustic point source by a solid, elastic prolate spheroid at a variety of transducer–scatterer separations. We find that the most important effect, when contrasted to the plane‐wave limit, is an increase in scattering strength (with decreasing transducer–scatterer separation) associated with the 1/rvariation of the incident field and the finite size of the scatterer. We use the results of this investigation to formulate a rough criterion for establishing the farfield region in scale model scattering experiments in the low‐frequency region.

 

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