Super-Cell Piezoelectric Composite With 1-3 Connectivity

被引:10
作者
Rouffaud, Remi [1 ]
Levassort, Franck [1 ]
Mai Pham Thi [2 ]
Bantignies, Claire [3 ]
Lethiecq, Marc [1 ]
Hladky-Hennion, Anne-Christine [4 ]
机构
[1] Francois Rabelais Univ, F-37071 Tours, France
[2] Thales Res & Technol, F-91767 Palaiseau, France
[3] Vermon SA, F-37000 Tours, France
[4] Inst Elect Microelect & Nanotechnol, ISEN Dept, F-59046 Lille, France
关键词
Composite; fabrication method; numerical modeling; piezoelectricity; transducer; TRIANGULAR-PILLAR GEOMETRY; TRANSDUCER APPLICATIONS; PIEZOCOMPOSITES; FABRICATION; MODES;
D O I
10.1109/TUFFC.2016.2606109
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The standard fabrication method for 1-3 piezocomposites for ultrasound transducers is the "dice and fill" method (DFM) in which lateral periodicity is introduced. This contributes to the appearance of spurious modes that can drastically affect the performance of the device if they appear near its thickness mode frequency, thus limiting the effective frequency range. A new 1-3 piezocomposite fabricated with a super-cell structure [1-3 super cell (13SC)] was designed in order to overcome these limitations. It consists of the merging of several periodic cells with 47% PZT volume fraction and epoxy resin as the matrix. Two lateral periodicities in one direction are defined as well as two different kerfs. The chosen cell shape is composed of five nonaligned square section rods (1 x1 mm(2)). For comparison of performance, two regular 1-3 piezocomposites (the same materials and equivalent periodicities) were fabricated by DFM. Electroacoustic responses in water were measured for the three composites being considered as transducers. Successive regular thinnings (from 2.8 to 1.1 mm) were carried out for each sample to increase the operating frequency (from around 0.4 to 1.3 MHz) and study the evolution of the characteristics (bandwidth and sensitivity). The experimental results confirmed the behavior of those obtained with numerical simulations, showing that the 13SC composite can be used in this entire frequency range, unlike regular composites.
引用
收藏
页码:2215 / 2223
页数:9
相关论文
共 28 条
[1]  
[Anonymous], 1986, FERROELECTRICS, V68, P1, DOI DOI 10.1080/00150198608238734
[2]  
[Anonymous], 2010, FIN EL SOFTW PACK AN
[3]  
Auld B. A., 1984, P IEEE ULTR S, P528
[4]   Fabrication and Performance of High-Frequency Composite Transducers with Triangular-Pillar Geometry [J].
Brown, Jeremy A. ;
Cherin, Emmanuel ;
Yin, Jianhua ;
Foster, F. Stuart .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2009, 56 (04) :827-836
[5]   Theoretical and experimental investigations of lateral modes in 1-3 piezocomposites [J].
Certon, D ;
Casula, O ;
Patat, F ;
Royer, D .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1997, 44 (03) :643-651
[6]   PIEZOELECTRIC COMPOSITE-MATERIALS FOR ULTRASONIC TRANSDUCER APPLICATIONS .1. RESONANT MODES OF VIBRATION OF PZT ROD POLYMER COMPOSITES [J].
GURURAJA, TR ;
SCHULZE, WA ;
CROSS, LE ;
NEWNHAM, RE ;
AULD, BA ;
WANG, YJ .
IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, 1985, 32 (04) :481-498
[7]  
Harvey G., 2006, P IEEE INT ULTR S OC, P1217
[8]   Assessing the influence of pillar aspect ratio on the behavior of 1-3 connectivity composite transducers [J].
Hayward, G ;
Bennett, J .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1996, 43 (01) :98-108
[9]   FINITE-ELEMENT MODELING OF ACTIVE PERIODIC STRUCTURES - APPLICATION TO 1-3 PIEZOCOMPOSITES [J].
HLADKYHENNION, AC ;
DECARPIGNY, JN .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1993, 94 (02) :621-635
[10]  
Hossack J. A., 1991, P IEEE ULTR S, P651