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

The potential usefulness of relatively simple pore microstructures such as parallel, identical,
inclined slits for creating broadband sound absorption has been argued through analytical …

The distribution of fiber diameters plays a crucial role in the transport and sound absorbing
properties of a three-dimensional random fibrous (3D-RF) medium. Conventionally, volume …

Polyurethane foam (PUF) is an exceptionally adaptable product that has a variety of
applications—it can be found almost everywhere. Due to such high utilization, the amount of …

Sound absorption efficiency of the fibrous composite material could be increased by an
additional polymer thin layer deposited on the substrate. In order to control the thickness of …

This research presents an eco-friendly method for producing polyurethane foam (PUF) and
water hyacinth fiber (WHF) sheets. The objectives were to engineer wall materials with …

This study aims to investigate the acoustic effects of thermal aging on partially reticulated
polyurethane (PU) foam. An accelerated test was performed under appropriate test …

Combining the micro-perforated panel, air gap, and porous material under a multi-layer
composite absorber framework has been proved to help obtain absorption enhancement …

This study investigates the effect of impregnation of graphene oxide (GO) on the acoustic
durability of polyurethane (PU) foam. PU foam was impregnated with GO using a vacuum …

Plastic foam sound-absorbing material is of great significance to improve indoor sound
environment. However, since the preparation of foamed material is fundamentally induced to …