Experimental study on the location of an acoustic emission source considering refraction in different media

Experimental study on the location of an acoustic emission source considering refraction in different media

Abstract The existing acoustic emission (AE) source location methods assume that acoustic waves propagate along straight lines, and the source location is determined by average wave velocity. Because of the heterogeneity of materials, location results often fail to meet the accuracy requirement. For...

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Autores principales: Zi-long Zhou, Jing Zhou, Long-jun Dong, Xin Cai, Yi-chao Rui, Chang-tao Ke
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
Materias:
Medicine
R
Science
Q
Acceso en línea:https://doaj.org/article/418e83858f634006803346230c858054
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spelling oai:doaj.org-article:418e83858f634006803346230c8580542021-12-02T11:40:15ZExperimental study on the location of an acoustic emission source considering refraction in different media10.1038/s41598-017-07371-w2045-2322https://doaj.org/article/418e83858f634006803346230c8580542017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07371-whttps://doaj.org/toc/2045-2322Abstract The existing acoustic emission (AE) source location methods assume that acoustic waves propagate along straight lines, and the source location is determined by average wave velocity. Because of the heterogeneity of materials, location results often fail to meet the accuracy requirement. For this reason, an AE source location method considering refraction in different media was proposed in this paper. According to sensor coordinates, the arrival time of acoustic waves, the velocities of acoustic waves in two kinds of media, the space-time relation equations of the AE source point and the measuring point were established by the precise coordinates of the AE source based on Snell’s law. The feasibility of the algorithm was verified by experiments, and the factors influencing location accuracy were also analysed. The results show that the algorithm proposed in this paper is applicable for both the same medium and different media, and the accuracy of localization is not affected by the ratio of wave velocities in two media or the distance from the AE source to the refraction surface.Zi-long ZhouJing ZhouLong-jun DongXin CaiYi-chao RuiChang-tao KeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Zi-long Zhou
Jing Zhou
Long-jun Dong
Xin Cai
Yi-chao Rui
Chang-tao Ke
Experimental study on the location of an acoustic emission source considering refraction in different media
description Abstract The existing acoustic emission (AE) source location methods assume that acoustic waves propagate along straight lines, and the source location is determined by average wave velocity. Because of the heterogeneity of materials, location results often fail to meet the accuracy requirement. For this reason, an AE source location method considering refraction in different media was proposed in this paper. According to sensor coordinates, the arrival time of acoustic waves, the velocities of acoustic waves in two kinds of media, the space-time relation equations of the AE source point and the measuring point were established by the precise coordinates of the AE source based on Snell’s law. The feasibility of the algorithm was verified by experiments, and the factors influencing location accuracy were also analysed. The results show that the algorithm proposed in this paper is applicable for both the same medium and different media, and the accuracy of localization is not affected by the ratio of wave velocities in two media or the distance from the AE source to the refraction surface.
format article
author Zi-long Zhou
Jing Zhou
Long-jun Dong
Xin Cai
Yi-chao Rui
Chang-tao Ke
author_facet Zi-long Zhou
Jing Zhou
Long-jun Dong
Xin Cai
Yi-chao Rui
Chang-tao Ke
author_sort Zi-long Zhou
title Experimental study on the location of an acoustic emission source considering refraction in different media
title_short Experimental study on the location of an acoustic emission source considering refraction in different media
title_full Experimental study on the location of an acoustic emission source considering refraction in different media
title_fullStr Experimental study on the location of an acoustic emission source considering refraction in different media
title_full_unstemmed Experimental study on the location of an acoustic emission source considering refraction in different media
title_sort experimental study on the location of an acoustic emission source considering refraction in different media
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/418e83858f634006803346230c858054
work_keys_str_mv AT zilongzhou experimentalstudyonthelocationofanacousticemissionsourceconsideringrefractionindifferentmedia
AT jingzhou experimentalstudyonthelocationofanacousticemissionsourceconsideringrefractionindifferentmedia
AT longjundong experimentalstudyonthelocationofanacousticemissionsourceconsideringrefractionindifferentmedia
AT xincai experimentalstudyonthelocationofanacousticemissionsourceconsideringrefractionindifferentmedia
AT yichaorui experimentalstudyonthelocationofanacousticemissionsourceconsideringrefractionindifferentmedia
AT changtaoke experimentalstudyonthelocationofanacousticemissionsourceconsideringrefractionindifferentmedia
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