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 …

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 …

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 …

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 …

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 …

This paper investigates sound propagation in polydisperse heterogeneous porous
composites. The two-scale asymptotic method of homogenization is used to obtain a …

Complement to standard E2611-09 of the American Society for Testing and Materials
[Standard Test Method for Measurement of Normal Incidence Sound Transmission of …

This work reports the results of experimental measurements of the sound absorption
coefficient of ceramic materials using the principle of acoustic resonators. Subsequently, the …

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 …

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 …