A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/978-3-031-15758-5_105 http://hdl.handle.net/11449/246281 |
Resumo: | Acoustic techniques remain the bedrock of pipeline leak detection, particularly for the water industry. The correlation technique, in which leak noise measurements are made at accessible locations on the pipe, either side of the leak, is used world-wide. Unfortunately, especially in the case of plastic pipes, access points are often not spaced closely enough for effective leak detection to take place. An alternative to sensing on the pipe is to measure directly on the ground surface, using discrete sensors such as geophones or accelerometers. However, to do this, the vibrational field on the ground, produced by the leak, needs to be fully understood. The present author, alongside colleagues, has developed an analytical model to show how axisymmetric elastic waves propagating within the pipe radiate to the ground surface. The model, only valid directly above the pipe, shows that, dependent on the soil properties, both a conical shear wave and a conical compressional wave may radiate into the soil, and thence propagate to the ground surface. Moreover, the axial dependence of the ground surface response mirrors the axial dependence of the waves propagating within the pipe. Here, a simplified analytical model of the conical pipe-radiated waves, which encapsulates the essential phase-related features of the more complex development described previously, is presented. This then allows a relatively simple extension to predict the off-axis ground surface as well as that directly above the pipe. Numerical simulations and experimental investigations are also carried out to demonstrate the potentialities of the proposed model to reveal the underlying physics through a simple way. |
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A Simplified Model of the Ground Surface Vibration Arising from a Leaking PipeBuried pipelineElastic wave propagationGround surface measurementsLeak detectionVibrationAcoustic techniques remain the bedrock of pipeline leak detection, particularly for the water industry. The correlation technique, in which leak noise measurements are made at accessible locations on the pipe, either side of the leak, is used world-wide. Unfortunately, especially in the case of plastic pipes, access points are often not spaced closely enough for effective leak detection to take place. An alternative to sensing on the pipe is to measure directly on the ground surface, using discrete sensors such as geophones or accelerometers. However, to do this, the vibrational field on the ground, produced by the leak, needs to be fully understood. The present author, alongside colleagues, has developed an analytical model to show how axisymmetric elastic waves propagating within the pipe radiate to the ground surface. The model, only valid directly above the pipe, shows that, dependent on the soil properties, both a conical shear wave and a conical compressional wave may radiate into the soil, and thence propagate to the ground surface. Moreover, the axial dependence of the ground surface response mirrors the axial dependence of the waves propagating within the pipe. Here, a simplified analytical model of the conical pipe-radiated waves, which encapsulates the essential phase-related features of the more complex development described previously, is presented. This then allows a relatively simple extension to predict the off-axis ground surface as well as that directly above the pipe. Numerical simulations and experimental investigations are also carried out to demonstrate the potentialities of the proposed model to reveal the underlying physics through a simple way.Institute of Sound and Vibration Research University of Southampton, SouthamptonIndustrial Engineering Department University of Trento, Via Sommarive, TrentoDepartment of Mechanical Engineering UNESP, São PauloCentre for Audio Acoustics and Vibration University of Technology SydneyDepartment of Mechanical Engineering UNESP, São PauloUniversity of SouthamptonUniversity of TrentoUniversidade Estadual Paulista (UNESP)University of Technology SydneyMuggleton, J. M.Scussel, O.Rustighi, E.Brennan, M. J. [UNESP]Almeida, F. [UNESP]Karimi, M.Joseph, P. F.2023-07-29T12:36:38Z2023-07-29T12:36:38Z2023-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1021-1030http://dx.doi.org/10.1007/978-3-031-15758-5_105Mechanisms and Machine Science, v. 125 MMS, p. 1021-1030.2211-09922211-0984http://hdl.handle.net/11449/24628110.1007/978-3-031-15758-5_1052-s2.0-85141775758Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMechanisms and Machine Scienceinfo:eu-repo/semantics/openAccess2023-07-29T12:36:38Zoai:repositorio.unesp.br:11449/246281Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T12:36:38Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
title |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
spellingShingle |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe Muggleton, J. M. Buried pipeline Elastic wave propagation Ground surface measurements Leak detection Vibration |
title_short |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
title_full |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
title_fullStr |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
title_full_unstemmed |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
title_sort |
A Simplified Model of the Ground Surface Vibration Arising from a Leaking Pipe |
author |
Muggleton, J. M. |
author_facet |
Muggleton, J. M. Scussel, O. Rustighi, E. Brennan, M. J. [UNESP] Almeida, F. [UNESP] Karimi, M. Joseph, P. F. |
author_role |
author |
author2 |
Scussel, O. Rustighi, E. Brennan, M. J. [UNESP] Almeida, F. [UNESP] Karimi, M. Joseph, P. F. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
University of Southampton University of Trento Universidade Estadual Paulista (UNESP) University of Technology Sydney |
dc.contributor.author.fl_str_mv |
Muggleton, J. M. Scussel, O. Rustighi, E. Brennan, M. J. [UNESP] Almeida, F. [UNESP] Karimi, M. Joseph, P. F. |
dc.subject.por.fl_str_mv |
Buried pipeline Elastic wave propagation Ground surface measurements Leak detection Vibration |
topic |
Buried pipeline Elastic wave propagation Ground surface measurements Leak detection Vibration |
description |
Acoustic techniques remain the bedrock of pipeline leak detection, particularly for the water industry. The correlation technique, in which leak noise measurements are made at accessible locations on the pipe, either side of the leak, is used world-wide. Unfortunately, especially in the case of plastic pipes, access points are often not spaced closely enough for effective leak detection to take place. An alternative to sensing on the pipe is to measure directly on the ground surface, using discrete sensors such as geophones or accelerometers. However, to do this, the vibrational field on the ground, produced by the leak, needs to be fully understood. The present author, alongside colleagues, has developed an analytical model to show how axisymmetric elastic waves propagating within the pipe radiate to the ground surface. The model, only valid directly above the pipe, shows that, dependent on the soil properties, both a conical shear wave and a conical compressional wave may radiate into the soil, and thence propagate to the ground surface. Moreover, the axial dependence of the ground surface response mirrors the axial dependence of the waves propagating within the pipe. Here, a simplified analytical model of the conical pipe-radiated waves, which encapsulates the essential phase-related features of the more complex development described previously, is presented. This then allows a relatively simple extension to predict the off-axis ground surface as well as that directly above the pipe. Numerical simulations and experimental investigations are also carried out to demonstrate the potentialities of the proposed model to reveal the underlying physics through a simple way. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:36:38Z 2023-07-29T12:36:38Z 2023-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/978-3-031-15758-5_105 Mechanisms and Machine Science, v. 125 MMS, p. 1021-1030. 2211-0992 2211-0984 http://hdl.handle.net/11449/246281 10.1007/978-3-031-15758-5_105 2-s2.0-85141775758 |
url |
http://dx.doi.org/10.1007/978-3-031-15758-5_105 http://hdl.handle.net/11449/246281 |
identifier_str_mv |
Mechanisms and Machine Science, v. 125 MMS, p. 1021-1030. 2211-0992 2211-0984 10.1007/978-3-031-15758-5_105 2-s2.0-85141775758 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Mechanisms and Machine Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1021-1030 |
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_ |
1799964600847826944 |