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Electric field distribution in porous piezoelectric materials during polarization

Germán Martínez-Ayuso, Michael Friswell, Hamed Haddad Khodaparast Orcid Logo, James I. Roscow, Christopher R. Bowen

Acta Materialia, Volume: 173, Pages: 332 - 341

Swansea University Authors: Michael Friswell, Hamed Haddad Khodaparast Orcid Logo

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DOI (Published version): 10.1016/j.actamat.2019.04.021

Abstract

High piezoelectric coupling coefficients enable the harvesting of more energy or increase the sensitivity of sensors which work using the principle of piezoelectricity. These coefficients depend on the material properties, but the manufacturing process can have a significant impact on the resulting...

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Published in: Acta Materialia
ISSN: 1359-6454
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50179
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spelling 2020-09-17T14:34:19.9229892 v2 50179 2019-05-01 Electric field distribution in porous piezoelectric materials during polarization 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 2019-05-01 FGSEN High piezoelectric coupling coefficients enable the harvesting of more energy or increase the sensitivity of sensors which work using the principle of piezoelectricity. These coefficients depend on the material properties, but the manufacturing process can have a significant impact on the resulting overall coefficients. During the manufacturing process, one of the main steps is the process of polarization where a poling electric field aligns the ferroelectric domains in a similar direction in order to create a transversely isotropic material able to generate electric fields or deformations. The degree of polarization depends on multiple factors and it can strongly influence the final piezoelectric coefficients. In this paper, a study on the electric field distribution on the sensitivity of the main piezoelectric and dielectric coefficients to the polarization process is performed, focusing on porous piezoelectric materials. Different inclusion geometries are considered, namely spherical, ellipsoidal and spheres with cracks. The electric field distribution at the micro scale within a representative volume element is modelled to determine the material polarization level using the finite element method. The results show that the electric field distribution is highly dependent on the inclusion geometries and cracks and it has a noticeable impact on the equivalent piezoelectric coefficients. These results are compared with experimental measurements from published literature. Good agreement is found between the ellipsoidal model and the experimental data. Journal Article Acta Materialia 173 332 341 1359-6454 31 7 2019 2019-07-31 10.1016/j.actamat.2019.04.021 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-09-17T14:34:19.9229892 2019-05-01T10:06:07.6550777 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Germán Martínez-Ayuso 1 Michael Friswell 2 Hamed Haddad Khodaparast 0000-0002-3721-4980 3 James I. Roscow 4 Christopher R. Bowen 5 0050179-01052019101054.pdf martinezayuso2019v2.pdf 2019-05-01T10:10:54.1270000 Output 17417647 application/pdf Accepted Manuscript true 2020-04-23T00:00:00.0000000 Released with a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng
title Electric field distribution in porous piezoelectric materials during polarization
spellingShingle Electric field distribution in porous piezoelectric materials during polarization
Michael Friswell
Hamed Haddad Khodaparast
title_short Electric field distribution in porous piezoelectric materials during polarization
title_full Electric field distribution in porous piezoelectric materials during polarization
title_fullStr Electric field distribution in porous piezoelectric materials during polarization
title_full_unstemmed Electric field distribution in porous piezoelectric materials during polarization
title_sort Electric field distribution in porous piezoelectric materials during polarization
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
f207b17edda9c4c3ea074cbb7555efc1
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
f207b17edda9c4c3ea074cbb7555efc1_***_Hamed Haddad Khodaparast
author Michael Friswell
Hamed Haddad Khodaparast
author2 Germán Martínez-Ayuso
Michael Friswell
Hamed Haddad Khodaparast
James I. Roscow
Christopher R. Bowen
format Journal article
container_title Acta Materialia
container_volume 173
container_start_page 332
publishDate 2019
institution Swansea University
issn 1359-6454
doi_str_mv 10.1016/j.actamat.2019.04.021
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description High piezoelectric coupling coefficients enable the harvesting of more energy or increase the sensitivity of sensors which work using the principle of piezoelectricity. These coefficients depend on the material properties, but the manufacturing process can have a significant impact on the resulting overall coefficients. During the manufacturing process, one of the main steps is the process of polarization where a poling electric field aligns the ferroelectric domains in a similar direction in order to create a transversely isotropic material able to generate electric fields or deformations. The degree of polarization depends on multiple factors and it can strongly influence the final piezoelectric coefficients. In this paper, a study on the electric field distribution on the sensitivity of the main piezoelectric and dielectric coefficients to the polarization process is performed, focusing on porous piezoelectric materials. Different inclusion geometries are considered, namely spherical, ellipsoidal and spheres with cracks. The electric field distribution at the micro scale within a representative volume element is modelled to determine the material polarization level using the finite element method. The results show that the electric field distribution is highly dependent on the inclusion geometries and cracks and it has a noticeable impact on the equivalent piezoelectric coefficients. These results are compared with experimental measurements from published literature. Good agreement is found between the ellipsoidal model and the experimental data.
published_date 2019-07-31T04:01:31Z
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score 11.013731

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