An evaluation of 1-3 connectivity composite transducers for air-coupled ultrasonic applications

被引：55
|
作者：
Hayward, G
Gachagan, A
机构：
[1] Dept. of Electron. and Elec. Eng., University of Strathclyde, Glasgow
来源：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 1996年 / 99卷 / 04期
关键词：
D O I：
10.1121/1.415402
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
A combination of theoretical modeling and experimental analysis is used to predict and assess the performance of 1-3 composite transducers for operation in an air-coupled environment. Specifically, finite element analysis, supported by linear systems modeling, is employed to evaluate transmission and reception characteristics over the complete volume fraction range, for operating frequencies in the region of 500 kHz, and the;theory confirmed using novel experimental techniques. The theoretical approach is then extended to assess the influence of matching and backing on transducer sensitivity and bandwidth. Throughout, the influence of air propagation is included in the simulation approach and highlighted where this factor is significant. The work is expected to provide useful design guidelines for the practical ultrasonic engineer. (C) 1996 Acoustical Society of America.
引用
收藏
页码：2148 / 2157
页数：10
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