Embedded piezoelectric transducers for structural health monitoring

被引：0
|
作者：
Hailu, B [1 ]
Gachagan, A [1 ]
Hayward, G [1 ]
McNab, A [1 ]
机构：
[1] Univ Strathclyde, Dept Elect & Elect Engn, Ctr Ultrason Engn, Glasgow G1 1XW, Lanark, Scotland
来源：
1999 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2 | 1999年
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper presents theoretical and experimental results of embedding a piezo-platelet interdigital transducer (IDT) into a 3.4mm thick plate of CibaGeigy Hard-set (CY1301/HY1300) epoxy resin. The piezoplatelet IDT comprises an ensemble of piezoceramic platelets embedded in an epoxy matrix. A combination of linear systems and finite element modeling has been employed to predict the theoretical surface displacement response at the plate surfaces. For a transducer positioned exactly at the centre of a plate, the surface displacement profile on both plate surfaces is symmetric. However, when the transducer position deviates from the centre, symmetric and asymmetric Lamb modes will simultaneously be generated in the plate. In addition, it is shown that off resonance operation is essential for symmetric mode generation. Finally, an IDT is embedded in a carbon-fibre reinforced composite plate and generation of ultrasonic Lamb waves is demonstrated.
引用
收藏
页码：735 / 738
页数：4
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