The new age of fibrous and porous-based composite materials has excellent acoustic
characteristics. Some of the prominent areas where these acoustical materials have found …

This paper proposes a strategy to broaden the sound absorption region of porous materials
by embedding ribs. The theoretical solution and the numerical simulations of the …

An ultralight graphene oxide (GO)/polyvinyl alcohol (PVA) aerogel (GPA) is proposed as a
new class of acoustic materials with tuneable and broadband sound absorption and sound …

The acoustic performance of fibrous materials is mainly determined by its airflow resistance,
and it is a parameter of the resistance that the airflow meets through the materials. This …

Airflow resistivity is an essential parameter for characterizing air-saturated porous sound-
absorbing materials theoretically and selecting sound-absorbing materials in practice …

Increasing absorption efficiency and decreasing total thickness of the acoustic absorber is
favorable to promote its practical application. Four compressed porous metals with …

In this study, biodegradable materials that could be utilized to reduce noise were examined.
Sound absorption test was conducted with an impedance tube. Sawdust, coconut fiber, and …

Porous metal is widely used in the fields of sound absorption and noise reduction, and it is a
critical procedure to identify acoustic characteristic parameters and to improve sound …

The three-dimensional frequency-domain linearized Navier-Stokes equations (LNSEs) with
consideration of eddy viscosity are developed to evaluate the acoustic attenuation …

Porous fibrous materials have been widely used as acoustic treatments for noise
attenuation. Their acoustic properties are typically characterized by Johnson-Champoux …