Experimental study of phased array beam steering characteristics

被引:71
作者
Clay, AC [1 ]
Wooh, SC [1 ]
Azar, L [1 ]
Wang, JY [1 ]
机构
[1] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA
关键词
ultrasonic nondestructive evaluation; linear phased arrays; transducer characterization; beam directivity; steering calibration;
D O I
10.1023/A:1022618321612
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The influence of several geometric parameters of linear phased arrays was studied. A systematic approach using an automated testing assembly was used to assess the steering performance of the array in a solid medium. In addition to calibrating the transducer with respect to its steering accuracy, this arrangement provided a detailed study of the effects of steering angle, number of elements, inter-element spacing and array aperture on the beam directivity. The experimental results show good agreement quantitatively with the predicted steering characteristics.
引用
收藏
页码:59 / 71
页数:13
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