Effect of the microstructure closed pore content on the acoustic behavior of polyurethane foams
O Doutres, N Atalla, K Dong - Journal of Applied Physics, 2011 - pubs.aip.org
The present paper proposes to investigate the links between the microstructure of
polyurethane foams and their sound absorbing efficiency, and more specifically the effect of …
polyurethane foams and their sound absorbing efficiency, and more specifically the effect of …
Acoustic evaluation of mycological biopolymer, an all-natural closed cell foam alternative
MG Pelletier, GA Holt, JD Wanjura, L Greetham… - Industrial Crops and …, 2019 - Elsevier
This research examines the use of a novel new renewable resource in acoustic absorption
applications that requires no glues or other artificial binders. Hence the proposed material …
applications that requires no glues or other artificial binders. Hence the proposed material …
An evaluation study of pressure-compressed acoustic absorbers grown on agricultural by-products
MG Pelletier, GA Holt, JD Wanjura, AJ Lara… - Industrial crops and …, 2017 - Elsevier
This research examines the use of a novel new renewable resource in acoustic absorption
applications. The new material being tested is based on a fungi that is grown on semi …
applications. The new material being tested is based on a fungi that is grown on semi …
[HTML][HTML] Tuning membrane content of sound absorbing cellular foams: Fabrication, experimental evidence and multiscale numerical simulations
This work is focused on tailoring cellular foam membranes for sound absorption. Several
foam configurations with a constant porosity and varying membrane content were first …
foam configurations with a constant porosity and varying membrane content were first …
Prediction of random incidence sound absorption coefficients of porous materials
Measuring the random incidence sound absorption coefficient (SAC) of porous materials is
costly and requires a full-size reverberation room. This paper shows that the predictions from …
costly and requires a full-size reverberation room. This paper shows that the predictions from …
Equivalent fluid approach to modeling the acoustical properties of polydisperse heterogeneous porous composites
This paper investigates sound propagation in polydisperse heterogeneous porous
composites. The two-scale asymptotic method of homogenization is used to obtain a …
composites. The two-scale asymptotic method of homogenization is used to obtain a …
Numerical simulation for the sound absorption properties of ceramic resonators
G Ciaburro, G Iannace - Fibers, 2020 - mdpi.com
This work reports the results of experimental measurements of the sound absorption
coefficient of ceramic materials using the principle of acoustic resonators. Subsequently, the …
coefficient of ceramic materials using the principle of acoustic resonators. Subsequently, the …
[HTML][HTML] Complement to standard method for measuring normal incidence sound transmission loss with three microphones
Complement to standard E2611-09 of the American Society for Testing and Materials
[Standard Test Method for Measurement of Normal Incidence Sound Transmission of …
[Standard Test Method for Measurement of Normal Incidence Sound Transmission of …
Sound insulation properties in low-density, mechanically strong and ductile nanoporous polyurea aerogels
Aerogels are quasi-stable, nanoporous, low-density, three-dimensional assemblies of
nanoparticles. In this paper, an extremely high sound transmission loss for a family of ductile …
nanoparticles. In this paper, an extremely high sound transmission loss for a family of ductile …
[HTML][HTML] Acoustic metamaterial absorbers based on multilayered sonic crystals
MD Guild, VM Garcia-Chocano, W Kan… - Journal of Applied …, 2015 - pubs.aip.org
Through the use of a layered arrangement, it is shown that lossy sonic crystals can be
arranged to create a structure with extreme acoustic properties, namely, an acoustic …
arranged to create a structure with extreme acoustic properties, namely, an acoustic …