Acoustic and rheological characterization of hollow glass microsphere composite for development of optimized air-coupled ultrasonic matching layer

Chung Mo Kang; Yong joo Baek; Ji Young Jeong; Jongkeun Sim; Eun Ji Gwak; Tae Jin Je; Doo Sun Choi; Gyu Man Kim; Jun Sae Han

doi:10.1016/j.ceramint.2022.07.141

Acoustic and rheological characterization of hollow glass microsphere composite for development of optimized air-coupled ultrasonic matching layer

Chung Mo Kang, Yong joo Baek, Ji Young Jeong, Jongkeun Sim, Eun Ji Gwak, Tae Jin Je, Doo Sun Choi, Gyu Man Kim, Jun Sae Han

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

An air-coupled acoustic matching layer, based on hollow glass microsphere composite, was developed for air-coupled ultrasonic transducers. The effects of the matrix, powder series, and volume fraction were systematically analyzed by acoustic and rheological characterization. The optimized hollow glass microsphere-epoxy composite showed a superior air-coupling performance, with a characteristics acoustic impedance of 1.08 MRayl and attenuation coefficient of 0.05 dB/mm, respectively. To validate the developed composite, an air-coupled ultrasonic transducer was fabricated with piezoelectric ceramic vibrator, and its feasibility for application in a gas flowmeter was demonstrated. The developed composite exhibits a suitable air-coupling performance for a high-accuracy ultrasonic gas flowmeter.

Original language	English
Pages (from-to)	32036-32048
Number of pages	13
Journal	Ceramics International
Volume	48
Issue number	21
DOIs	https://doi.org/10.1016/j.ceramint.2022.07.141
State	Published - 1 Nov 2022

Keywords

Air-coupling
Ceramic composite
Hollow glass microspheres
Matching layer
Ultrasonic transducer

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10.1016/j.ceramint.2022.07.141

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title = "Acoustic and rheological characterization of hollow glass microsphere composite for development of optimized air-coupled ultrasonic matching layer",

abstract = "An air-coupled acoustic matching layer, based on hollow glass microsphere composite, was developed for air-coupled ultrasonic transducers. The effects of the matrix, powder series, and volume fraction were systematically analyzed by acoustic and rheological characterization. The optimized hollow glass microsphere-epoxy composite showed a superior air-coupling performance, with a characteristics acoustic impedance of 1.08 MRayl and attenuation coefficient of 0.05 dB/mm, respectively. To validate the developed composite, an air-coupled ultrasonic transducer was fabricated with piezoelectric ceramic vibrator, and its feasibility for application in a gas flowmeter was demonstrated. The developed composite exhibits a suitable air-coupling performance for a high-accuracy ultrasonic gas flowmeter.",

keywords = "Air-coupling, Ceramic composite, Hollow glass microspheres, Matching layer, Ultrasonic transducer",

author = "Kang, {Chung Mo} and Baek, {Yong joo} and Jeong, {Ji Young} and Jongkeun Sim and Gwak, {Eun Ji} and Je, {Tae Jin} and Choi, {Doo Sun} and Kim, {Gyu Man} and Han, {Jun Sae}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd and Techna Group S.r.l.",

year = "2022",

month = nov,

day = "1",

doi = "10.1016/j.ceramint.2022.07.141",

language = "English",

volume = "48",

pages = "32036--32048",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Acoustic and rheological characterization of hollow glass microsphere composite for development of optimized air-coupled ultrasonic matching layer

AU - Kang, Chung Mo

AU - Baek, Yong joo

AU - Jeong, Ji Young

AU - Sim, Jongkeun

AU - Gwak, Eun Ji

AU - Je, Tae Jin

AU - Choi, Doo Sun

AU - Kim, Gyu Man

AU - Han, Jun Sae

PY - 2022/11/1

Y1 - 2022/11/1

N2 - An air-coupled acoustic matching layer, based on hollow glass microsphere composite, was developed for air-coupled ultrasonic transducers. The effects of the matrix, powder series, and volume fraction were systematically analyzed by acoustic and rheological characterization. The optimized hollow glass microsphere-epoxy composite showed a superior air-coupling performance, with a characteristics acoustic impedance of 1.08 MRayl and attenuation coefficient of 0.05 dB/mm, respectively. To validate the developed composite, an air-coupled ultrasonic transducer was fabricated with piezoelectric ceramic vibrator, and its feasibility for application in a gas flowmeter was demonstrated. The developed composite exhibits a suitable air-coupling performance for a high-accuracy ultrasonic gas flowmeter.

AB - An air-coupled acoustic matching layer, based on hollow glass microsphere composite, was developed for air-coupled ultrasonic transducers. The effects of the matrix, powder series, and volume fraction were systematically analyzed by acoustic and rheological characterization. The optimized hollow glass microsphere-epoxy composite showed a superior air-coupling performance, with a characteristics acoustic impedance of 1.08 MRayl and attenuation coefficient of 0.05 dB/mm, respectively. To validate the developed composite, an air-coupled ultrasonic transducer was fabricated with piezoelectric ceramic vibrator, and its feasibility for application in a gas flowmeter was demonstrated. The developed composite exhibits a suitable air-coupling performance for a high-accuracy ultrasonic gas flowmeter.

KW - Air-coupling

KW - Ceramic composite

KW - Hollow glass microspheres

KW - Matching layer

KW - Ultrasonic transducer

UR - http://www.scopus.com/inward/record.url?scp=85135307528&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2022.07.141

DO - 10.1016/j.ceramint.2022.07.141

M3 - Article

AN - SCOPUS:85135307528

SN - 0272-8842

VL - 48

SP - 32036

EP - 32048

JO - Ceramics International

JF - Ceramics International

IS - 21

ER -

Acoustic and rheological characterization of hollow glass microsphere composite for development of optimized air-coupled ultrasonic matching layer

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Keywords

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