scholarly journals Development of Underwater Wide-band Acoustic Transducer Using the 1-3 Piezoelectric Composite

2008 ◽  
Vol 18 (4) ◽  
pp. 424-431
Keyword(s):  
Wide Band ◽  
Piezoelectric Composite ◽  
Acoustic Transducer

scholarly journals Research and Fabrication of High-Frequency Broadband and Omnidirectional Transmitting Transducer

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2347 ◽  
Author(s):  
Shaohua Hao ◽  
Hongwei Wang ◽  
Chao Zhong ◽  
Likun Wang ◽  
Hao Zhang
Keyword(s):  
Composite Material ◽  
High Frequency ◽  
Wide Band ◽  
Simulation Software ◽  
Piezoelectric Composite ◽  
Voltage Response ◽  
Forming Process ◽  
Composite Ring ◽  
Matching Layer ◽  
Acoustic Transducer

A wide-band cylindrical transducer was developed by using the wide band of the composite material and the matched matching layer for multimode coupling. Firstly, the structure size of the transducer’s sensitive component was designed by using ANSYS simulation software. Secondly, the piezoelectric composite ring-shaped sensitive component was fabricated by the piezoelectric composite curved-surface forming process, and the matching layer was coated on the periphery of the ring-shaped piezoelectric composite material. Finally, it was encapsulated and the electrodes were drawn out to make a high-frequency broadband horizontal omnidirectional water acoustic transducer prototype. After testing, the working frequency range of the transducer was 230–380 kHz, and the maximum transmission voltage response was 168 dB in the water.

scholarly journals Investigation of Electromechanical Properties on 3-D Printed Piezoelectric Composite Scaffold Structures

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 5927
Author(s):  
Tutu Sebastian ◽  
Miriam Bach ◽  
Andreas Geiger ◽  
Tony Lusiola ◽  
Lucjan Kozielski ◽  
...  
Keyword(s):  
Fused Deposition Modeling ◽  
Composite Scaffold ◽  
Piezoelectric Composite ◽  
Electromechanical Properties ◽  
Destructive Testing ◽  
Fused Filament Fabrication ◽  
Pore Former ◽  
Piezoelectric Composites ◽  
Fused Deposition ◽  
Acoustic Transducer

Piezoelectric composites with 3-3 connectivity gathered attraction due to their potential application as an acoustic transducer in medical imaging, non-destructive testing, etc. In this contribution, piezoelectric composites were fabricated with a material extrusion-based additive manufacturing process (MEX), also well-known under the names fused deposition modeling (FDM), fused filament fabrication (FFF) or fused deposition ceramics (FDC). Thermoplastic filaments were used to achieve open and offset printed piezoelectric scaffold structures. Both scaffold structures were printed, debinded and sintered successfully using commercial PZT and BaTiO3 powder. For the first time, it could be demonstrated, that using the MEX processing method, closed pore ferroelectric structure can be achieved without pore-former additive. After ceramic processing, the PZT scaffold structures were impregnated with epoxy resin to convert them into composites with 3-3 connectivity. A series of composites with varying ceramic content were achieved by changing the infill parameter during the 3D printing process systematically, and their electromechanical properties were investigated using the electromechanical aix PES device. Also, the Figure of merit (FOM) of these composites was calculated to assess the potential of this material as a candidate for transducer applications. A maximum for the FOM at 25 vol.% of PZT could be observed in this study.

RESPONSE OF A 1-3 PIEZOELECTRIC COMPOSITE TRANSDUCER FOR ELASTIC WAVES GENERATED DURING GLASS CAPILLARY BREAKAGE

2008 ◽  
Vol 22 (11) ◽  
pp. 833-838
Author(s):  
SEUNG IL CHO ◽  
JONG KYU LEE ◽  
WOON HA YOON ◽  
JONG O LEE ◽  
SUNG SOO JUNG ◽  
...  
Keyword(s):  
Elastic Waves ◽  
Volume Fraction ◽  
Wide Band ◽  
Piezoelectric Composite ◽  
Glass Capillary ◽  
Pulse Type ◽  
Ae Signal ◽  
Filling Method ◽  
Perpendicular Component ◽  
Pulse Echo

The 1-3 piezoelectric composite transducer with the 60% volume fraction of the PZT-5A was fabricated by the dicing-filling method. The electrical and acoustical characteristics of the 1-3 piezoelectric composite transducer were compared and analyzed by the electrical impedance measurements and the pulse-echo method. The mechanical quality coefficient (Q) and the resonant frequency were 18.5 and 1.6 MHz, respectively. The elastic waves generated during glass capillary breakage were observed by 1-3 piezoelectric composite transducer. The observed AE signals are well matched with the perpendicular component of the particle velocity calculated by computer. The observed AE signal and its frequency spectrum show that the pulse-type signals of AE observed by 1-3 piezoelectric composite transducer may be depend on the the vibration mode of thickness with the plate response of the wide band.

scholarly journals Design and Characterization for Wide-Band AE Transducer by 1-3 Piezoelectric Composite

1995 ◽  
Vol 103 (1199) ◽  
pp. 664-669 ◽  
Author(s):  
Yoshinobu OHARA ◽  
Mitsuharu SHIWA ◽  
Hiroaki YANAGIDA ◽  
Teruo KISHI
Keyword(s):  
Wide Band ◽  
Piezoelectric Composite

A 300 kHz High-Frequency Underwater Transducer

2009 ◽  
Vol 79-82 ◽  
pp. 259-262
Author(s):  
Gang Wang ◽  
Lei Qin ◽  
Li Kun Wang
Keyword(s):  
High Frequency ◽  
Piezoelectric Ceramic ◽  
Ultrasonic Transducer ◽  
Piezoelectric Composite ◽  
Radial Vibration ◽  
Ceramic Tube ◽  
Acoustic Transducer ◽  
Underwater Transducer ◽  
Working Frequency ◽  
Ceramic Cylinder

A new type of piezoelectric composite ultrasonic transducer with high frequency in radial vibration is studied. A high-frequency acoustic transducer has been designed and prepared with pzt-5-type piezoelectric ceramic cylinder. When the piezoelectric ceramic cylinder vibrates along the direction of its radial direction, the working frequency is high. It is composed of a piezoelectric ceramic tube and a steel bracket which is inserted in the inner of the ceramic tube. Use the finite element method by ANSYS for analyzing the radial vibration of a piezoelectric tube. On that basis, through managing ANSYS simulation the vibration mode of transducer system is obtained, and analyzed the working frequency of transducer. According to the simulation, the high-frequency cylindrical acoustic transducer has been produced. Comparing the products and the traditional cylindrical transducers, the products haven’t only a good all-round circle directional, but it also has a high working frequency (300 kHz).

scholarly journals Design of Piezoelectric Ultrasonic Transducer Based on Doped PDMS

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3123
Author(s):  
Ran Yang ◽  
Wenyi Liu ◽  
Wanjia Gao ◽  
Dingwei Kang
Keyword(s):  
Frequency Band ◽  
Small Volume ◽  
Electrode Materials ◽  
Ultrasonic Transducer ◽  
Wide Band ◽  
Piezoelectric Composite ◽  
Polymer Phase ◽  
Piezoelectric Phase ◽  
Simulation Results ◽  
Application Prospects

The performance of the ultrasonic transducer will directly affect the accuracy of ultrasonic experimental measurement. Therefore, in order to meet the requirements of a wide band, a kind of annular 2-2-2 piezoelectric composite is proposed based on doped PDMS. In this paper, the transducer structure consisted of PZT-5A piezoelectric ceramics and PDMS doped with 3 wt.% Al2O3:SiO2 (1:6) powder, which constituted the piezoelectric composite. MATLAB and COMSOL software were used for simulation. Meanwhile, the electrode materials were selected. Then, the performance of the designed annular 2-2-2 ultrasonic transducer was tested. The simulation results show that when the polymer phase material of the piezoelectric ultrasonic transducer is doped PDMS, the piezoelectric phase and the ceramic substrate account for 70% of the total volume, the polymer phase accounts for 30% of the total volume, and the maximum frequency band width can reach 90 kHz. The experimental results show that the maximum bandwidth of −3 dB can reach 104 kHz when the frequency is 160 kHz. The results of the electrode test show that the use of Cu/Ti electrode improves the electrical conductivity of the single electrode. In this paper, the annular 2-2-2 transducer designed in the case of small volume had the characteristics of a wide frequency band, which was conducive to the miniaturization and integration of the transducer. Therefore, we believe that the annular 2-2-2 piezoelectric composite has broad application prospects.

Development of Underwater Acoustic Transducer Using 1-3-2 Piezoelectric Composite

2013 ◽  
Vol 433-435 ◽  
pp. 211-216
Author(s):  
Li Li ◽  
Li Kun Wang ◽  
Lei Qin
Keyword(s):  
Beam Width ◽  
Piezoelectric Composite ◽  
Voltage Response ◽  
Voltage Sensitivity ◽  
Frequency Range ◽  
Element Analysis ◽  
Rigid Foam ◽  
Acoustic Transducer ◽  
Source Level ◽  
Copper Shell

The flat transducer is composed of 1-3-2 piezoelectric composite and copper shell. The structure of transducer was determined according to design requirement and finite element analysis by ANSYS. The transducer was prepared by using a 25mm×25mm×4.8mm 1-3-2 composite chip, rigid foam backing, copper shell, polyurethane layer and acoaxial cable. The voltage response, source level, receiving voltage sensitivity and other performance were measured. The resonant frequency of transducer is 294kHz, the maximum transmitting voltage response is 159.6dB, 3dB bandwidth is 32kHz, source level is 208dB, receiving voltage sensitivity of the transducer is -203 ± 3dB in the frequency range of 50-250kHz frequency, the beam width of -3dB is 11º in the directivity.

Wide-band acoustic transducer

2000 ◽  
Author(s):  
Octavian Robu ◽  
Maria Robu
Keyword(s):  
Wide Band ◽  
Acoustic Transducer
Sign in / Sign up

Export Citation Format

Share Document