Design, fabrication, and characterization of 1-3 piezoelectric composite air-coupled ultrasonic transducers with micro-membrane filter matching layer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU152643" target="_blank" >RIV/00216305:26620/24:PU152643 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S092442472400949X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S092442472400949X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sna.2024.115955" target="_blank" >10.1016/j.sna.2024.115955</a>

Result language

angličtina

Original language name

Design, fabrication, and characterization of 1-3 piezoelectric composite air-coupled ultrasonic transducers with micro-membrane filter matching layer

Original language description

Air-coupled ultrasonic transducers are widely used in various fields of nondestructive material characterization. This paper presents the fabrication and performance characterization of 1-3 piezoelectric composite air-coupled ultrasonic transducers operating at frequencies ranging from 400 kHz to 600 kHz. The transducers are fabricated using a dice-and-fill method with PZT-5 as the active material. A double-layer matching strategy is employed, utilizing hollow glass microsphere filled epoxy resin as the first matching and bonding layer. Additionally, micro- membrane filters with different pore sizes are used as the second matching layer. Thermoplastic adhesive TPU is utilized to bind the micro-membrane filter and the first matching layer. Due to the low acoustic impedance of the hollow glass microsphere filled epoxy resin and micro-membrane filter, acoustic impedance mismatch is reduced. Finite element simulation is used to determine the optimal ceramic volume fraction and ceramic pillar height of the 1-3 piezoelectric composites. When the pore size of the micro-membrane filter is 0.8 mu m, the transducer achieves the lowest two-way insertion loss of-56.86 dB and the highest-6 dB bandwidth of 15.6 %, making it feasible for through mode applications.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20200 - Electrical engineering, Electronic engineering, Information engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

SENSORS AND ACTUATORS A-PHYSICAL

ISSN

1873-3069

e-ISSN

—

Volume of the periodical

379

Issue of the periodical within the volume

115955

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

„“-„“

UT code for WoS article

001338873500001

EID of the result in the Scopus database

2-s2.0-85206505932