A laboratory-based leak noise simulator for buried water pipes
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.apacoust.2021.108346 http://hdl.handle.net/11449/229503 |
Resumo: | Acoustic correlators are often used to pinpoint leaks in water distribution systems. Generally, these devices are tested for their efficacy in bespoke test rigs that are also used for training purposes. However, this can be problematic as it is difficult to expose the correlators to identical conditions, and only a limited number of situations is possible. An alternative approach is described in this paper, in which a bench-top device, called a leak noise simulator (LNS), is used to generate pipe vibration representative of measured leak noise. The LNS comprises a computer to generate and supply the signals, a dual channel power amplifier and two electrodynamic shakers and accelerometers to generate and measure the vibrations. There are two modes of operation. One involves the generation of leak noise signals using a theoretical model of the buried water pipe implemented in the computer, and the other replicates measured signals from the field that are stored in the computer. To faithfully replicate the pipe vibration due to leak noise, the dynamic effects of the power amplifier and shakers are compensated for by using a filter implemented in the computer. The design and testing of the LNS in both modes are reported in detail, demonstrating the potential of the device. |
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Repositório Institucional da UNESP |
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A laboratory-based leak noise simulator for buried water pipesBuried water pipeCompensator filterCross-correlation techniqueLeak noise simulatorTime delay estimationAcoustic correlators are often used to pinpoint leaks in water distribution systems. Generally, these devices are tested for their efficacy in bespoke test rigs that are also used for training purposes. However, this can be problematic as it is difficult to expose the correlators to identical conditions, and only a limited number of situations is possible. An alternative approach is described in this paper, in which a bench-top device, called a leak noise simulator (LNS), is used to generate pipe vibration representative of measured leak noise. The LNS comprises a computer to generate and supply the signals, a dual channel power amplifier and two electrodynamic shakers and accelerometers to generate and measure the vibrations. There are two modes of operation. One involves the generation of leak noise signals using a theoretical model of the buried water pipe implemented in the computer, and the other replicates measured signals from the field that are stored in the computer. To faithfully replicate the pipe vibration due to leak noise, the dynamic effects of the power amplifier and shakers are compensated for by using a filter implemented in the computer. The design and testing of the LNS in both modes are reported in detail, demonstrating the potential of the device.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Department of Mechanical Engineering UNESP-FEIS, Ilha SolteiraFaculty of Science and Engineering UNESP-FCE, TupãDepartment of Mechanical Engineering UNESP-FEB, BauruDepartment of Mechanical Engineering UNESP-FEIS, Ilha SolteiraFaculty of Science and Engineering UNESP-FCE, TupãDepartment of Mechanical Engineering UNESP-FEB, BauruCAPES: 1836088FAPESP: 2013/50412-3FAPESP: 2017/14432-0FAPESP: 2017/16953-8CAPES: 88887.374001/2019-00Universidade Estadual Paulista (UNESP)Iwanaga, M. K. [UNESP]Brennan, M. J. [UNESP]Almeida, F. C.L. [UNESP]Scussel, O. [UNESP]Cezar, S. O. [UNESP]2022-04-29T08:33:00Z2022-04-29T08:33:00Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.apacoust.2021.108346Applied Acoustics, v. 185.1872-910X0003-682Xhttp://hdl.handle.net/11449/22950310.1016/j.apacoust.2021.1083462-s2.0-85114703036Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Acousticsinfo:eu-repo/semantics/openAccess2022-04-29T08:33:00Zoai:repositorio.unesp.br:11449/229503Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:33Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A laboratory-based leak noise simulator for buried water pipes |
title |
A laboratory-based leak noise simulator for buried water pipes |
spellingShingle |
A laboratory-based leak noise simulator for buried water pipes Iwanaga, M. K. [UNESP] Buried water pipe Compensator filter Cross-correlation technique Leak noise simulator Time delay estimation |
title_short |
A laboratory-based leak noise simulator for buried water pipes |
title_full |
A laboratory-based leak noise simulator for buried water pipes |
title_fullStr |
A laboratory-based leak noise simulator for buried water pipes |
title_full_unstemmed |
A laboratory-based leak noise simulator for buried water pipes |
title_sort |
A laboratory-based leak noise simulator for buried water pipes |
author |
Iwanaga, M. K. [UNESP] |
author_facet |
Iwanaga, M. K. [UNESP] Brennan, M. J. [UNESP] Almeida, F. C.L. [UNESP] Scussel, O. [UNESP] Cezar, S. O. [UNESP] |
author_role |
author |
author2 |
Brennan, M. J. [UNESP] Almeida, F. C.L. [UNESP] Scussel, O. [UNESP] Cezar, S. O. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Iwanaga, M. K. [UNESP] Brennan, M. J. [UNESP] Almeida, F. C.L. [UNESP] Scussel, O. [UNESP] Cezar, S. O. [UNESP] |
dc.subject.por.fl_str_mv |
Buried water pipe Compensator filter Cross-correlation technique Leak noise simulator Time delay estimation |
topic |
Buried water pipe Compensator filter Cross-correlation technique Leak noise simulator Time delay estimation |
description |
Acoustic correlators are often used to pinpoint leaks in water distribution systems. Generally, these devices are tested for their efficacy in bespoke test rigs that are also used for training purposes. However, this can be problematic as it is difficult to expose the correlators to identical conditions, and only a limited number of situations is possible. An alternative approach is described in this paper, in which a bench-top device, called a leak noise simulator (LNS), is used to generate pipe vibration representative of measured leak noise. The LNS comprises a computer to generate and supply the signals, a dual channel power amplifier and two electrodynamic shakers and accelerometers to generate and measure the vibrations. There are two modes of operation. One involves the generation of leak noise signals using a theoretical model of the buried water pipe implemented in the computer, and the other replicates measured signals from the field that are stored in the computer. To faithfully replicate the pipe vibration due to leak noise, the dynamic effects of the power amplifier and shakers are compensated for by using a filter implemented in the computer. The design and testing of the LNS in both modes are reported in detail, demonstrating the potential of the device. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:33:00Z 2022-04-29T08:33:00Z 2022-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.apacoust.2021.108346 Applied Acoustics, v. 185. 1872-910X 0003-682X http://hdl.handle.net/11449/229503 10.1016/j.apacoust.2021.108346 2-s2.0-85114703036 |
url |
http://dx.doi.org/10.1016/j.apacoust.2021.108346 http://hdl.handle.net/11449/229503 |
identifier_str_mv |
Applied Acoustics, v. 185. 1872-910X 0003-682X 10.1016/j.apacoust.2021.108346 2-s2.0-85114703036 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Acoustics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964854320103424 |