Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Martin Östberg"'
Autor:
Ilkka Karasalo, Martin Östberg, Peter Sigray, Jukka-Pekka Jalkanen, Lasse Johansson, Mattias Liefvendahl, Rickard Bensow
Publikováno v:
Frontiers in Marine Science, Vol 4 (2017)
Estimates of the noise source spectra of ships based on long term measurements in the Baltic sea are presented. The measurement data were obtained by a hydrophone deployed near a major shipping lane south of the island Öland. Data from over 2,000 cl
Externí odkaz:
https://doaj.org/article/bf6b9d905f974b3ab18cee698384e22d
Publikováno v:
The Journal of the Acoustical Society of America. 152(6)
A calibration technique with potential for low frequencies and sizeable systems of underwater transducers is being developed at the Swedish Defence Research Agency. The technique is based on the three-transducer spherical wave reciprocity method for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67ec8be36c86ff507c22d7b110da6e17
https://pubmed.ncbi.nlm.nih.gov/36586858
https://pubmed.ncbi.nlm.nih.gov/36586858
Autor:
Jukka-Pekka Jalkanen, Lasse Johansson, Mattias Liefvendahl, Rickard Bensow, Peter Sigray, Martin Östberg, Ilkka Karasalo, Mathias Andersson, Heikki Peltonen, Jukka Pajala
In this paper, a methodology is presented for modeling underwater noise emissions from ships based on realistic vessel activity in the Baltic Sea area. This paper combines the Wittekind noise source model with the Ship Traffic Emission Assessment Mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a062e4a8e5f7069992d56dacbfa06d0
https://doi.org/10.5194/os-2018-48
https://doi.org/10.5194/os-2018-48
Publikováno v:
Applied Acoustics. 78:43-50
A vibro-acoustic reduced order model (ROM) based on a substructuring method using undeformed coupling interfaces (UCI) is proposed. The method may be used to reduce the order of a global problem, t ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24f8525fdda1730e3e3124896c4685d0
https://doi.org/10.1016/j.apacoust.2013.11.001
https://doi.org/10.1016/j.apacoust.2013.11.001
Publikováno v:
International Journal of Solids and Structures. 50:1791-1811
The dynamic stiffness of hollowed cylindrical vibration isolators using a wave-guide modelling approach is given. The isolators consist of rubber and metal elements in series. The boundary conditions at the lateral and radial surfaces of each rubber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f079f906eba69f91fde14953831489d4
https://doi.org/10.1016/j.ijsolstr.2013.02.008
https://doi.org/10.1016/j.ijsolstr.2013.02.008
Publikováno v:
International Journal for Numerical Methods in Engineering. 90:1035-1052
A weak form of the anisotropic Biot's equation represented in a cylindrical coordinate system using a spatial Fourier expansion in the circumferential direction is presented. The original three dim ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32889fbcf3fba0a31d1e4ee4918e85da
https://doi.org/10.1002/nme.3354
https://doi.org/10.1002/nme.3354
Autor:
Leif Kari, Martin Östberg
Publikováno v:
Journal of Sound and Vibration. 330:3222-3244
Audio-frequency wave-guide models for antisymmetric dynamic stiffness of arbitrary long elastomer cylinders are presented. The locally non-mixed boundary conditions at the lateral and radial surfaces are simultaneously satisfied by using the modes co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::733479ffedc2c76f1a8bb0282ec4ac76
https://doi.org/10.1016/j.jsv.2011.01.020
https://doi.org/10.1016/j.jsv.2011.01.020
Publikováno v:
International Journal for Numerical Methods in Engineering. 81:1439-1454
New modelling tools intended to contribute to the development of components for quieter vehicles are developed. The tools are based on continuum models for wave propagation in poro– and visco–elastic media. By using geometric attributes of the st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::453ce74b88d5325ef4b26da463e9c2f8
https://doi.org/10.1002/nme.2739
https://doi.org/10.1002/nme.2739
Autor:
Enrico Rizzuto, Ilkka Karasalo, Martin Östberg, Tomaso Gaggero, Thomas Folegot, Michel André, L. Six, M. van der Schaar
There is a rising concern about the environmental status of the seas of our planet. Such concern regards several kinds of anthropogenic activities and their impact on the marine ecosystems. Part of the adverse effects are recognised to be due to vari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b0adee4e4cd178a6fc2271892e77987
http://hdl.handle.net/11588/634462
http://hdl.handle.net/11588/634462
Autor:
Ilkka Karasalo, Dominique Clorennec, Bas Binnerts, Thomas Folegot, Martin Östberg, M.E.G.D. Colin, Christ A. F. de Jong, H. Ozkan Sertlek, Michael A. Ainslie
Publikováno v:
MTS/IEEE Oceans'15, 18-21 May 2015, Genova, Italy, 9 p.
The SONIC (Suppression Of underwater Noise Induced by Cavitation) and AQUO (Achieve QUieter Oceans by shipping noise footprint reduction) projects were awarded within the European Seventh Framework Program to develop tools to investigate and mitigate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdc6c8ce955793969bb0981628ea13c1
http://resolver.tudelft.nl/uuid:761e6f84-9942-4d89-9542-26272635d07f
http://resolver.tudelft.nl/uuid:761e6f84-9942-4d89-9542-26272635d07f