2005년도 6th 2005 International Conference on Computers, Communications and System (2005.11)바로가기
페이지
pp.215-218
저자
Lee, Sang-Wook, Nam, Hyo-Duk, Ryu, Jeong-Tak, Kim, Yeon-Bo
언어
영어(ENG)
URL
https://www.earticle.net/Article/A166195
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4,000원
원문정보
초록
영어
We have investigated on the development of 2-2 piezocomposites that have better piezoelectric activity and lower acoustic impedance than those of conventional piezoceramics. In this study, we have investigated the piezoelectric and acoustic properties of 2-2 piezocomposites sensor which were fabricated using dice-and-fill technique for the different volume fraction of PZT. The resonance characteristics measured by an impedance analyzer were similar to the analysis of finite element method. The resonance characteristics and the electromechanical coupling factor were the best when the volume fraction PZT was 0.6. It also showed the highest result from the standpoint of sensitivity, bandwidth and ring-down property and so on at the same condition. The specific characteristics shows that the 2-2 piezocomposites turned out to be superior to the ultrasonic sensor composed by single phase PZT.