Výsledky vyhledávání - "Sandrine T. Rakotonarivo"

A new hybrid method between equivalent source method and boundary element method for modeling diffraction

Autor: Régine Guillermin, Sandrine T. Rakotonarivo, Vincent Roggerone

Publikováno v: 181th Meeting of the Acoustical Society of Americ
181th Meeting of the Acoustical Society of Americ, Dec 2021, Seattle, United States. pp.A208-A208, ⟨10.1121/10.0008135⟩

The Equivalent Source Method (ESM) allows to model the acoustical radiation of an object with a set of monopole sources inside the object. This method efficiently describes acoustical radiation of an object with smooth surface, but is not performant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::040f5405413b6cd73c9a35de305d54e5
https://hal.science/hal-03601477

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Vibration monitoring of nuclear power plant containment buildings during the Integrated Leakage Rate Test for structural condition assessment

Autor: J. N. Eiras, Cédric Payan, Agustin Spalvier, Vincent Garnier, Sandrine T. Rakotonarivo

Publikováno v: Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, American Society of Mechanical Engineers, 2021, pp.1-9. ⟨10.1115/1.4052474⟩
Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems, 2021, pp.1-9. ⟨10.1115/1.4052474⟩

This study investigates the use of the operational vibrations produced during the Integrated Leak Rate Test of nuclear power plant containment buildings for further informing on its mechanical condition. The experiment is performed on a 1:3-scale con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce80a9dde72718fe511bb56f04a4b081
https://hal.archives-ouvertes.fr/hal-03451902

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Passive structural monitoring based on data-driven matched field processing

Autor: François Baqué, Sandrine T. Rakotonarivo, J.-F. Chaix, William A. Kuperman, Serge Mensah, Emma Lubeigt

Publikováno v: Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, 2019, 145 (4), pp.EL317-EL322. ⟨10.1121/1.5099170⟩
Journal of the Acoustical Society of America, Acoustical Society of America, 2019, 145 (4), pp.EL317-EL322. ⟨10.1121/1.5099170⟩

A passive data-driven method to localize a defect in a structure using the ambient noise is derived. The approach requires only acoustic measurements in a spatially random noise field and no knowledge of the structure. Measurements are taken before a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::079c1aa49ea0d455ef6359fdcc5072fd
https://doi.org/10.1121/1.5099170

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Bistatic scattering of an elastic object using the structural admittance and noise-based holographic measurements

Autor: Earl G. Williams, Jit Sarkar, Simone Sternini, Sandrine T. Rakotonarivo, Alexis Bottero, William A. Kuperman

Publikováno v: Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, Acoustical Society of America, 2020, 148 (2), pp.734-747. ⟨10.1121/10.0001705⟩
Journal of the Acoustical Society of America, 2020, 148 (2), pp.734-747. ⟨10.1121/10.0001705⟩

This paper presents a method to calculate the bistatic response of an elastic object immersed in a fluid using its structural Green's function (in vacuo structural admittance matrix), calculated by placing the object in a spatially random noise field

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26e7f8ccb4b569bc103e281955fa709c
https://hal.archives-ouvertes.fr/hal-03162666

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Damage detection and localization from linear and nonlinear global vibration features in concrete slabs subjected to localized thermal damage

Autor: J. N. Eiras, Vincent Garnier, Cédric Payan, Sandrine T. Rakotonarivo

Publikováno v: Structural Health Monitoring
Structural Health Monitoring, 2020, pp.147592172094179. ⟨10.1177/1475921720941792⟩
Structural Health Monitoring, SAGE Publications (UK and US), 2020, pp.147592172094179. ⟨10.1177/1475921720941792⟩

In this study, different alternatives to detect and localize damage from linear and nonlinear vibration responses were investigated. These alternatives were compared on two concrete slabs subjected to different damage extents. Linear and nonlinear mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0ce58825f170c425c2dc050f2aa1007
https://hal.science/hal-03162673

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Weld inspection by focused adjoint method

Autor: Emma Lubeigt, Serge Mensah, Gilles Gobillot, Khaled Metwally, Jean-François Chaix, François Baqué, Sandrine T. Rakotonarivo

Publikováno v: Ultrasonics
Ultrasonics, Elsevier, 2018, 83, pp.80-87. ⟨10.1016/j.ultras.2017.08.009⟩
Ultrasonics, 2018, 83, pp.80-87. ⟨10.1016/j.ultras.2017.08.009⟩

This paper reports a methodology for the non-destructive ultrasonic evaluation of welds, based on probing, residue back-focusing and topological energy calculation using an enhanced (focused) adjoint method. The proposed method combines the advantage

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27fda4afcd6ff5e241f5e8ea91d56e05
https://doi.org/10.1016/j.ultras.2017.08.009

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Topological imaging in bounded elastic media

Autor: Serge Mensah, Emma Lubeigt, François Baqué, Jean-François Chaix, Sandrine T. Rakotonarivo, Gilles Gobillot

Publikováno v: Ultrasonics
Ultrasonics, Elsevier, 2017, 76, pp.145-153. ⟨10.1016/j.ultras.2017.01.002⟩
Ultrasonics, 2017, 76, pp.145-153. ⟨10.1016/j.ultras.2017.01.002⟩

Detecting, imaging and sizing defects in a bounded elastic medium is still a difficult task, especially when access is complex. Adjoint methods simplify the task as they take advantage of prior information such as the geometry and material properties

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f75d32207942e1313733280e9d60898a
https://doi.org/10.1016/j.ultras.2017.01.002

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Damage Detection and Localization in Concrete Slabs Through Linear and Nonlinear Vibration Analysis

Autor: Vincent Garnier, Cédric Payan, Sandrine T. Rakotonarivo, J. N. Eiras, Narintsoa Ranaivomanana

Publikováno v: Structural Health Monitoring 2019.

In this study, different alternatives to detect, localize damage from linear and nonlinear vibration responses are investigated. These alternatives are compared on two concrete slabs which were subjected to two different damage types and extents. Lin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa195df04b1d2d70a8919eb99bec76ec
https://doi.org/10.12783/shm2019/32138

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Effect of the Interfacial Transition Zone on ultrasonic wave attenuation and velocity in concrete

Autor: Vincent Garnier, Sandrine T. Rakotonarivo, Manda Ramaniraka, Cédric Payan

Publikováno v: Cement and Concrete Research
Cement and Concrete Research, Elsevier, 2019, 124, pp.105809. ⟨10.1016/j.cemconres.2019.105809⟩
Cement and Concrete Research, 2019, 124, pp.105809. ⟨10.1016/j.cemconres.2019.105809⟩

The effect of the Interfacial Transition Zone (ITZ) on ultrasonic wave attenuation and velocity in concrete is investigated in this study. These two parameters are often used to characterize the concrete microstructure. They can be analyzed through n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f8d7e400574315a7e4850a8c880250c
https://hal.archives-ouvertes.fr/hal-03162675/file/S0008884619303060.pdf

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