Air-coupled ultrasonic transducers based on cellular polypropylene ferroelectret films

被引：6
|
作者：
Bovtun, Viktor
Doering, Joachim
Bartusch, Jurgen
Beck, Uve
Erhard, Anton
Yakymenko, Yuriy
机构：
[1] Fed Inst Mat Res & Testing, D-12205 Berlin, Germany
[2] Acad Sci Czech Republ, Inst Phys, Prague 18221, Czech Republic
[3] NTUU Kyiv Polytech Inst, UA-03056 Kiev, Ukraine
来源：
FERROELECTRICS | 2007年 / 353卷
关键词：
air-coupled ultrasonics; non-contact transducers; ferroelectrets; electromechanical properties;
D O I：
10.1080/00150190701368141
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Analysis of the dielectric and electromechanical properties of the cellular polypropylene ferroelectret films (EMFIT) evidences their high potential for the application in the air-coupled ultrasonic transducers. Simple prototype transducers, based on the EMFIT films, were developed and their high sensitivity was proved in the air-coupled ultrasonic experiment. Amplitude and delay time scanned images of the polyethylene step wedge with holes, obtained in both pulse-echo and transmission modes, demonstrate that non-contact ultrasonic imaging with EMFIT transducers is possible.
引用
收藏
页码：620 / 626
页数：7
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