Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Franck D. Philippe"'
Publikováno v:
Scientific Reports
Scientific Reports, Nature Publishing Group, 2015, 5 (1), ⟨10.1038/srep11112⟩
Scientific Reports, Nature Publishing Group, 2015, 5 (1), ⟨10.1038/srep11112⟩
Elastic waves are guided along finite structures such as cylinders, plates, or rods through reflection, refraction and mode conversion at the interfaces. Such wave propagation is ubiquitous in the world around us and studies of elastic waveguides fir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e30a03ab9845d229a3ccc4f5213852d
https://doi.org/10.1038/srep11112
https://doi.org/10.1038/srep11112
Publikováno v:
Proceedings of Meetings on Acoustics.
Backward waves propagating on shell are guided modes with opposite phase and group velocities. For a shell in vacuum, backward modes are linked to zero group velocity modes and resonances which have been the object of recent studies. For a shell embe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc6224a0d691cc54e4f39b259f1c99bf
https://doi.org/10.1121/1.4800803
https://doi.org/10.1121/1.4800803
Publikováno v:
Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, 2013, 133 (1), pp.94-107
Journal of the Acoustical Society of America, Acoustical Society of America, 2013, 133 (1), pp.94-107
Journal of the Acoustical Society of America, 2013, 133 (1), pp.94-107
Journal of the Acoustical Society of America, Acoustical Society of America, 2013, 133 (1), pp.94-107
The method of the time reversal operator decomposition is usually employed to detect and characterize static targets using the invariants of the time reversal operator. This paper presents a theoretical and experimental investigation into the impact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ad3913fd77c2c6fcca2e40bb1f8885d
https://hal.science/hal-00839499
https://hal.science/hal-00839499
Publikováno v:
The Journal of the Acoustical Society of America. 126(1)
This paper proposes a method to construct the temporal Green’s function from a scatterer to an array of transducers in a waveguide using free-space back propagation of the eigenvectors of the time-reversal operator (TRO). The monostatic Green’s f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eab3817026f68584e50f988ea1c37b2
https://pubmed.ncbi.nlm.nih.gov/19603853
https://pubmed.ncbi.nlm.nih.gov/19603853
Autor:
Julien de Rosny, Dominique Clorennec, Claire Prada, Mathias Fink, Jean-Gabriel Minonzio, Franck D. Philippe
Publikováno v:
The Journal of the Acoustical Society of America. 124(2)
This paper reports the results of an investigation into extracting of the backscattered frequency signature of a target in a waveguide. Retrieving the target signature is difficult because it is blurred by waveguide reflections and modal interference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2bd8b521aee87798c6626a7d8b7f39c
https://pubmed.ncbi.nlm.nih.gov/18681570
https://pubmed.ncbi.nlm.nih.gov/18681570
Publikováno v:
The Journal of the Acoustical Society of America. 128:2346-2346
It is known that some Lamb modes referred to as backward‐waves have a negative phase velocity. In this work, the mode conversion between a forward and a backward Lamb wave is observed at the interface formed by a stepped thickness change and on a f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb33bc6f5708d049030d5b43ec3554b6
https://doi.org/10.1121/1.3508308
https://doi.org/10.1121/1.3508308
Publikováno v:
The Journal of the Acoustical Society of America. 123:3186-3186
Detection and characterization of a target in shallow water is an active field of research. In general, in a waveguide, the dispersion is such that the frequency signature of a target cannot be extracted from a single backscatterd signal unless the w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d749a2587f85e0c8e91806737953a24
https://doi.org/10.1121/1.2933300
https://doi.org/10.1121/1.2933300
Publikováno v:
The Journal of the Acoustical Society of America. 123:3340-3340
Time‐reversal techniques allow focusing in waveguides with application for detection or telecommunication (Kupperman et al., J. Acoust. Soc. Am. 103(1), 25‐40, (1998)). It has been shown that the DORT method (French acronym for Decomposition of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d847c9f84a0b395d9091368ca18501c5
https://doi.org/10.1121/1.2933879
https://doi.org/10.1121/1.2933879
Publikováno v:
Inverse Problems. 24:025014
The Dde l'Op´ erateur de Retournement Temporel method applies to scattering analysis with arrays of transducers. It comprises the study of the time-reversal invariants which correspond to the eigenvectors of the time- reversal operator or to the sin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21fff83c956eaa8ee84424f58d6a16fb
https://doi.org/10.1088/0266-5611/24/2/025014
https://doi.org/10.1088/0266-5611/24/2/025014
Publikováno v:
The Journal of the Acoustical Society of America. 122:3022
In a shallow water waveguide, detection and characterization of a target is an active field of research. Retrieving the target signature is extremely difficult due to the complex mode coupling between the incident wave and the backscattered wave. One
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::765fab553c7c525b3f51ce5bd60e9b5f
https://doi.org/10.1121/1.2942805
https://doi.org/10.1121/1.2942805