EFFECT OF ACTIVE DIAMETER AND DAMPING ON THE PERFORMANCE OF ULTRASONIC TRANSDUCERS

被引：1
|
作者：
PATEL, ND [1 ]
NICHOLSON, PS [1 ]
机构：
[1] MCMASTER UNIV,DEPT MAT SCI & ENGN,CERAM ENGN RES GRP,HAMILTON L8S 4L7,ONTARIO,CANADA
来源：
ULTRASONICS | 1994年 / 32卷 / 02期
关键词：
TRANSDUCERS; DAMPING; TRANSDUCER PERFORMANCE;
D O I：
10.1016/0041-624X(94)90017-5
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Ultrasonic transducers (12-45 MHz) with reproducible performance were made using lead metaniobate (LMN) compositions. The signal strength and pulse shape were studied as a function of the active diameter at different frequencies (damped and undamped). A tungsten epoxy composite backing of acoustic impedance 16.5 x 10(6) Ns m-3 was developed to obtain moderate bandwidth with high signal sensitivity. The resultant signals are compared with those predicted by a simple model.
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页码：99 / 106
页数：8
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