Zobrazeno 1 - 7
of 7
pro vyhledávání: '"David J. Bamford"'
Publikováno v:
The Journal of the Acoustical Society of America. 147:3594-3604
An engineering method for triaxial hydrostatic compression of metallic foam is presented to preferentially alter the foam's microstructure. The method is demonstrated on an assortment of open-cell aluminum foams with varying pore size and porosity. M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6065e92c4ebe1512e0c8d2088fad1f8
https://doi.org/10.1121/10.0001307
https://doi.org/10.1121/10.0001307
Publikováno v:
Recent Trends in Naval Engineering Research ISBN: 9783030641504
Metallic foam metamaterials consist of an open-cell metallic microstructure completely saturated by a viscous material. In this chapter, dynamic responses of metamaterials containing foams with two distinct pore sizes as well as six different saturat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afb8a134e1ef522c7d661dbcc4a46f83
https://doi.org/10.1007/978-3-030-64151-1_7
https://doi.org/10.1007/978-3-030-64151-1_7
Publikováno v:
The Journal of the Acoustical Society of America. 148(3)
A method for estimating acoustic absorption in porous materials is presented in which the thermal and viscous boundary layers are modeled through boundary conditions to the Helmholtz equation for the acoustic pressure. The method is proposed for rigi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3796a7fb9fcd124bb0853a3ec8c4cde
https://pubmed.ncbi.nlm.nih.gov/33003855
https://pubmed.ncbi.nlm.nih.gov/33003855
Publikováno v:
The Journal of the Acoustical Society of America. 146(1)
A method for estimating acoustic absorption in foams is presented using a combination of micro-computed tomography, finite element analysis, and boundary layer loss theory. In the method, the foam is assumed to be rigid framed and the viscous and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bc172fd03e0e2f6ca22c70c4b000b41
https://pubmed.ncbi.nlm.nih.gov/31370580
https://pubmed.ncbi.nlm.nih.gov/31370580
Publikováno v:
Applied Acoustics. 160:107138
A composite foam consisting of open-cell metallic foam embedded with polyurethane foam is fabricated and evaluated for sound absorbing properties. The best performing composite foam increased the sound absorption by a factor of 6 (from .1 to .6) in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3aac76af3021548730fcbd5c6795b65
https://doi.org/10.1016/j.apacoust.2019.107138
https://doi.org/10.1016/j.apacoust.2019.107138
Publikováno v:
The Journal of the Acoustical Society of America. 146:2786-2786
A composite foam consisting of polyurethane foam embedded in metallic foam is fabricated and evaluated for sound absorbing properties. The normal incidence sound absorption coefficient is measured in an impedance tube for three different types of foa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffaab48b1d40b0ec7bb25adbf23f67ac
https://doi.org/10.1121/1.5136653
https://doi.org/10.1121/1.5136653
Publikováno v:
The Journal of the Acoustical Society of America. 144:1764-1764
Open-cell metallic foams are high stiffness-to-weight cellular materials whose microstructure allows for saturation of viscous liquid. Such a composite has advantages for underwater sound absorption over traditional rubbers due to minimal compression
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a31f47e265ea9590deb0923a389679f
https://doi.org/10.1121/1.5067803
https://doi.org/10.1121/1.5067803