Publication detail

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

Wang, CM. Gao, HY. Zhou, XY. Ma, WG. Tan, H. Samart, C. Salamon, D. Yan, CZ. Zhang, HB.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Piezoelectric composites; Air-coupled ultrasonic transducer; Matching layer; Micro-membrane filter

Authors

Wang, CM.; Gao, HY.; Zhou, XY.; Ma, WG.; Tan, H.; Samart, C.; Salamon, D.; Yan, CZ.; Zhang, HB.

Released

1. 12. 2024

Publisher

ELSEVIER SCIENCE SA

Location

LAUSANNE

ISBN

1873-3069

Periodical

SENSORS AND ACTUATORS A-PHYSICAL

Year of study

379

Number

115955

State

Swiss Confederation

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S092442472400949X?via%3Dihub

BibTex

@article{BUT191221,
  author="David {Salamon} and Chuanmin {Wang} and Huayun {Gao} and Xinyi {Zhou} and Weigang {Ma} and Hua {Tan} and Chanatip {Samart} and Chunze {Yan} and Haibo {Zhang}",
  title="Design, fabrication, and characterization of 1-3 piezoelectric composite air-coupled ultrasonic transducers with micro-membrane filter matching layer",
  journal="SENSORS AND ACTUATORS A-PHYSICAL",
  year="2024",
  volume="379",
  number="115955",
  pages="11",
  doi="10.1016/j.sna.2024.115955",
  issn="1873-3069",
  url="https://www.sciencedirect.com/science/article/pii/S092442472400949X?via%3Dihub"
}

Responsibility: Ing. Marek Strakoš