A poro-elastic model of sound propagation in granular materials
The dynamics of granular materials have been studied for many years, however, they have
recently drawn attention for their unique response to acoustic excitation, and thus their …
recently drawn attention for their unique response to acoustic excitation, and thus their …
Recent Progress on Organic Aerogels for Sound Absorption
E Hu, Y Zhu, X Cheng, Q Liu, M Zhu - Materials Today Communications, 2024 - Elsevier
With the rapid development of modern industry, noise pollution has become one of the
serious environmental problems in human life. The application of porous sound absorption …
serious environmental problems in human life. The application of porous sound absorption …
Experimental study of granular particle stacks' circumferential edge-constraint effect and the level-and time-dependent acoustical behavior
Granular materials, such as activated carbon, have shown advantages in absorbing low-
frequency sounds, but they also exhibit significant nonlinearities. In this article, three unique …
frequency sounds, but they also exhibit significant nonlinearities. In this article, three unique …
Effect of particle size on sound absorption behavior of granular aerogel agglomerates
We investigate the sound absorption characteristics of granular aerogel agglomerates of
various particle sizes. The normal incidence sound absorption coefficients of six …
various particle sizes. The normal incidence sound absorption coefficients of six …
Tunable sound packages consisting of granular aerogels and fibrous media
In this study, two granular aerogel materials, both consisting of particles with sizes on the
scale of 1 to 50 mm, were first investigated both theoretically and experimentally to improve …
scale of 1 to 50 mm, were first investigated both theoretically and experimentally to improve …
Characterization and analysis of granular activated carbon stacks subject to the edge-constraint effect
The objective of the current work was to identify the conditions under which the acoustical
properties of unconsolidated stacks of granular activated carbon (GAC) can be accurately …
properties of unconsolidated stacks of granular activated carbon (GAC) can be accurately …
A general and stable approach to modeling and coupling multilayered acoustical systems with various types of layers
In this article, a general method is proposed to model layered acoustical systems with two-by-
two transfer matrices, and further, to solve for their acoustic absorption, reflection, and …
two transfer matrices, and further, to solve for their acoustic absorption, reflection, and …
Acoustic analyses of mortars prepared with recycled aggregates
TS Bozkurt - Applied Acoustics, 2023 - Elsevier
The use of aggregate types obtained from glass wastes and construction wastes was
investigated in mortar mixtures. The sound absorption coefficient, sound transmission loss …
investigated in mortar mixtures. The sound absorption coefficient, sound transmission loss …
[HTML][HTML] Designing hybrid aerogel-3D printed absorbers for simultaneous low frequency and broadband noise control
Recent studies have demonstrated that granular aerogels with sub-50 μm particles surpass
conventional acoustic materials like glass fibers and polyurethane foams in low-frequency …
conventional acoustic materials like glass fibers and polyurethane foams in low-frequency …
Modeling a low-frequency sound absorber consisting of a granular activated carbon stack backed by a poro-elastic layer
High surface area particles, like granular activated carbon (GAC), have shown advantages
in absorbing low-frequency sounds by themselves and when combined with other …
in absorbing low-frequency sounds by themselves and when combined with other …