Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Acoustic wave absorption"'
Publikováno v:
Publications of the Ray W. Herrick Laboratories
The acoustic absorption of granular aerogel layers with a granule sizes in the range of 2 to 40 μm is dominated by narrow-banded, high absorption regions in the low-frequency range and by reduced absorption values at higher frequencies. In this pape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8ae35d883701164baf6e73575e15e0d
https://doi.org/10.3397/in-2021-2215
https://doi.org/10.3397/in-2021-2215
Autor:
F. Legusha, Yu. Popov
Publikováno v:
Труды Крыловского государственного научного центра, Vol 396, Iss 2, Pp 113-121 (2021)
Object and purpose of research. The study of the acoustic pulse changes regularities during its propagation in con-fined media is one of the fundamental problems of acoustics, which allows to pose and solve the inverse problem of determining the diss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c840377824e427320af72a6f17e75b1c
https://transactions-ksrc.ru/eng/archive/acoustic-wave-absorption-in-a-waveguide-with-impedance-boundary-conditions/
https://transactions-ksrc.ru/eng/archive/acoustic-wave-absorption-in-a-waveguide-with-impedance-boundary-conditions/
Autor:
M.J. Hadianfard, Zohreh Zangiabadi
Publikováno v:
Journal of Cellular Plastics. 56:395-410
Pure polyurethane foam and nanocomposite foam are used to absorb sound. In this study, hollow silica nanospheres and rigid silica nanoparticles were added to the polyurethane matrix and their sound absorption properties were investigated by impedance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24c1a6f34cad09e740c683a3ab836b9c
https://doi.org/10.1177/0021955x19864388
https://doi.org/10.1177/0021955x19864388
Autor:
Philippe Besnier
Publikováno v:
Electromagnetic Reverberation Chambers: Recent advances and innovative applications
Electromagnetic Reverberation Chambers: Recent advances and innovative applications, Institution of Engineering and Technology, pp.175-204, 2021, 9781785619311. ⟨10.1049/SBEW544E_ch6⟩
Electromagnetic Reverberation Chambers: Recent advances and innovative applications ISBN: 9781785619311
Electromagnetic Reverberation Chambers: Recent advances and innovative applications, Institution of Engineering and Technology, pp.175-204, 2021, 9781785619311. ⟨10.1049/SBEW544E_ch6⟩
Electromagnetic Reverberation Chambers: Recent advances and innovative applications ISBN: 9781785619311
International audience; This chapter discusses the role of energy absorption in a reverberation chamber and some related applications. The composite Q-factor is the key indicator of the total amount of losses in a reverberation chamber since it quant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7750ace3ea3d25f58a0f9ec0a458545b
https://hal.archives-ouvertes.fr/hal-03370659
https://hal.archives-ouvertes.fr/hal-03370659
Autor:
Funda Cengiz Çallıoğlu, Ayşe Özkal
In this study, new sound-absorbing composite materials in the form of nanofiber web-reinforced nonwovens and sandwich structures were produced by incorporating polyurethane (PU) nanofibers of different durations to recycled polyethylene terephthalate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55fa0d90d6b714b23aeb25439d079719
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/86723
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/86723
Autor:
Kone, Tenon Charly, Ghinet, Sebastian, Dupont, Thomas, Panneton, Raymond, Anant, Grewal, Viresh, Wickramasinghe
The paper presents the design and the acoustic properties evaluation of complex shape metamaterials. Complex metamaterials are a better alternative to conventional acoustic materials to absorb acoustic energy at low frequencies when the available vol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1674::a557d18959cea41dd14307aa16e3dc67
https://nrc-publications.canada.ca/eng/view/object/?id=9d5a5abe-78be-46b6-bad6-50d48791c36c
https://nrc-publications.canada.ca/eng/view/object/?id=9d5a5abe-78be-46b6-bad6-50d48791c36c
Composite structures with various stacking sequences were formed by combining electrospun polyurethane (PU) nanofibers with needle-punched recycled nonwovens from polyester textile wastes and bottles as a new sound absorption material in order to con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::830e4a0c38cfb22894345ae4c6db98d5
A novel technique for the laboratory characterization of the frequency-dependent acoustic surface admittance of partly saturated samples of sands is presented. The technique is based on a standard laboratory de-watering apparatus coupled with a stand
Externí odkaz:
http://hdl.handle.net/10454/3962
Autor:
Horoshenkov, Kirill V., Yin, Y.
A numerical method for sound propagation of higher-order cross-sectional modes in a duct of arbitrary cross-section and boundary conditions with nonzero, complex acoustic admittance has been considered. This method assumes that the cross-section of t
Externí odkaz:
http://hdl.handle.net/10454/2745
Publikováno v:
The Journal of the Acoustical Society of America. 150:A214-A214
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1f921ede54113e36a416b132911af26
https://doi.org/10.1121/10.0008158
https://doi.org/10.1121/10.0008158