Metal foams are a fascinating group of materials that possess distinct physicochemical
properties and interconnected strut features with high surface area-to-volume ratios, high …

Sound absorption mechanism, material modification and structural design of various
synthetic fiber materials for industrial noise reduction are reviewed in this paper for the …

The effect of cellular structure in the flexible polyurethane foams on the sound absorption
behavior is investigated for improved sound environment within vehicles. Two types of …

This work presents benchmark examples related to the modelling of sound absorbing
porous media with rigid frame based on the periodic geometry of their microstructures. To …

At first glance, it seems that modern, inexpensive additive manufacturing (AM) technologies
can be used to produce innovative, efficient acoustic materials with tailored pore …

A theoretical model is established to evaluate the sound absorption performance of
underwater anechoic layers containing periodically distributed axial holes. Based on the …

This article explores the applicability of numerical homogenization techniques for analyzing
transport properties in real foam samples, mostly open-cell, to understand long-wavelength …

An acoustic labyrinthine porous metamaterial (ALPM) or the so-called acoustic labyrinthine
metaporous surface is designed for the subwavelength sound absorption by perforating …

This work investigates a porous composite with modifiable micro-geometry so that its ability
to absorb noise can be accommodated to different frequency ranges. The polymeric …

Finite-volume methods for problems involving second-order operators with full diffusion
matrix can be used thanks to the definition of a discrete gradient for piecewise constant …