Lead-Free AE Sensor Based on BZT–BCT Ceramics

In this study, an acoustic emission (AE) sensor was fabricated using lead-free Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–BCT) ceramics. The acoustic and electrome...

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Autores principales:	Dong-Jin Shin, Woo-Seok Kang, Dong-Hwan Lim, Bo-Kun Koo, Min-Soo Kim, Soon-Jong Jeong, In-Sung Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	lead-free ceramics AE sensor piezoelectric sensor Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/263852beec7f45608631818f6c4ab585
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id	oai:doaj.org-article:263852beec7f45608631818f6c4ab585
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spelling	oai:doaj.org-article:263852beec7f45608631818f6c4ab5852021-11-11T19:06:36ZLead-Free AE Sensor Based on BZT–BCT Ceramics10.3390/s212171001424-8220https://doaj.org/article/263852beec7f45608631818f6c4ab5852021-10-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7100https://doaj.org/toc/1424-8220In this study, an acoustic emission (AE) sensor was fabricated using lead-free Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>–0.5(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> (BZT–BCT) ceramics. The acoustic and electromechanical properties of the AE sensor were determined by the shapes of the piezoelectric ceramics. To optimize the AE sensor performance, the shapes of the ceramics were designed according to various diameter/thickness ratios (D/T) = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0. The BZT–BCT ceramic with D/T = 1.0 exhibited excellent values of a piezoelectric charge coefficient (<i>d</i><sub>33</sub>), piezoelectric voltage coefficient (<i>g<sub>33</sub></i>), and electromechanical coupling factor (<i>k<sub>p</sub></i>), which were 370 (pC/N), 11.3 (10<sup>−3</sup> Vm/N), and 0.58, respectively. Optimum values of resonant frequency (<i>f<sub>r</sub></i>) = 172.724 (kHz), anti-resonant frequency (<i>f<sub>a</sub></i>) = 196.067 (kHz), and effective electromechanical coupling factor (<i>k<sub>eff</sub></i>) = 0.473 were obtained for the manufactured BZT–BCT ceramic with D/T = 1.0. The maximum sensitivity and frequency of the AE sensor made of the BZT–BCT ceramic with a D/T ratio of 1.0 were 65 dB and 30 kHz, respectively.Dong-Jin ShinWoo-Seok KangDong-Hwan LimBo-Kun KooMin-Soo KimSoon-Jong JeongIn-Sung KimMDPI AGarticlelead-free ceramicsAE sensorpiezoelectric sensorChemical technologyTP1-1185ENSensors, Vol 21, Iss 7100, p 7100 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lead-free ceramics AE sensor piezoelectric sensor Chemical technology TP1-1185
spellingShingle	lead-free ceramics AE sensor piezoelectric sensor Chemical technology TP1-1185 Dong-Jin Shin Woo-Seok Kang Dong-Hwan Lim Bo-Kun Koo Min-Soo Kim Soon-Jong Jeong In-Sung Kim Lead-Free AE Sensor Based on BZT–BCT Ceramics
description	In this study, an acoustic emission (AE) sensor was fabricated using lead-free Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>–0.5(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> (BZT–BCT) ceramics. The acoustic and electromechanical properties of the AE sensor were determined by the shapes of the piezoelectric ceramics. To optimize the AE sensor performance, the shapes of the ceramics were designed according to various diameter/thickness ratios (D/T) = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0. The BZT–BCT ceramic with D/T = 1.0 exhibited excellent values of a piezoelectric charge coefficient (<i>d</i><sub>33</sub>), piezoelectric voltage coefficient (<i>g<sub>33</sub></i>), and electromechanical coupling factor (<i>k<sub>p</sub></i>), which were 370 (pC/N), 11.3 (10<sup>−3</sup> Vm/N), and 0.58, respectively. Optimum values of resonant frequency (<i>f<sub>r</sub></i>) = 172.724 (kHz), anti-resonant frequency (<i>f<sub>a</sub></i>) = 196.067 (kHz), and effective electromechanical coupling factor (<i>k<sub>eff</sub></i>) = 0.473 were obtained for the manufactured BZT–BCT ceramic with D/T = 1.0. The maximum sensitivity and frequency of the AE sensor made of the BZT–BCT ceramic with a D/T ratio of 1.0 were 65 dB and 30 kHz, respectively.
format	article
author	Dong-Jin Shin Woo-Seok Kang Dong-Hwan Lim Bo-Kun Koo Min-Soo Kim Soon-Jong Jeong In-Sung Kim
author_facet	Dong-Jin Shin Woo-Seok Kang Dong-Hwan Lim Bo-Kun Koo Min-Soo Kim Soon-Jong Jeong In-Sung Kim
author_sort	Dong-Jin Shin
title	Lead-Free AE Sensor Based on BZT–BCT Ceramics
title_short	Lead-Free AE Sensor Based on BZT–BCT Ceramics
title_full	Lead-Free AE Sensor Based on BZT–BCT Ceramics
title_fullStr	Lead-Free AE Sensor Based on BZT–BCT Ceramics
title_full_unstemmed	Lead-Free AE Sensor Based on BZT–BCT Ceramics
title_sort	lead-free ae sensor based on bzt–bct ceramics
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/263852beec7f45608631818f6c4ab585
work_keys_str_mv	AT dongjinshin leadfreeaesensorbasedonbztbctceramics AT wooseokkang leadfreeaesensorbasedonbztbctceramics AT donghwanlim leadfreeaesensorbasedonbztbctceramics AT bokunkoo leadfreeaesensorbasedonbztbctceramics AT minsookim leadfreeaesensorbasedonbztbctceramics AT soonjongjeong leadfreeaesensorbasedonbztbctceramics AT insungkim leadfreeaesensorbasedonbztbctceramics
_version_	1718431572900708352

Lead-Free AE Sensor Based on BZT–BCT Ceramics

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