Sorption on eggshell waste—a review on ultrastructure, biomineralization and other applications

PS Guru, S Dash - Advances in colloid and interface science, 2014 - Elsevier
The structure, adsorption behavior and applications of eggshell waste materials have been
reviewed. The ultrastructure of eggshell particles has been discussed to understand the …

[PDF][PDF] Recent trends in porous sound-absorbing materials

JP Arenas, MJ Crocker - Sound & vibration, 2010 - sandv.com
Roughness www. SandV. com MATERIALS REFERENCE ISSUE 13 sound waves to enter
the materials through a multitude of small holes or openings. Materials made from open …

The review of fiber-based sound-absorbing structures

C Zhang, H Li, J Gong, J Chen, Z Li… - Textile Research …, 2023 - journals.sagepub.com
According to the World Health Organization, noise pollution is second only to air pollution in
its impact on health and the environment. Fiber-based sound-absorbing structures have …

Acoustic energy harvesting using an electromechanical Helmholtz resonator

F Liu, A Phipps, S Horowitz, K Ngo… - The Journal of the …, 2008 - pubs.aip.org
This paper presents the development of an acoustic energy harvester using an
electromechanical Helmholtz resonator (EMHR). The EMHR consists of an orifice, cavity …

[HTML][HTML] Microstructural design, manufacturing and dual-scale modelling of an adaptable porous composite sound absorber

KC Opiela, TG Zieliński - Composites Part B: Engineering, 2020 - Elsevier
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 …

Effect of time delay on the impedance control of a pressure-based, current-driven Electroacoustic Absorber

E De Bono, M Collet, G Matten, S Karkar… - Journal of Sound and …, 2022 - Elsevier
The pressure-based, current-driven impedance control technique known as “Electroacoustic
Absorption” has offered new horizons for room modal equalization at low frequencies …

A multiple degree of freedom electromechanical Helmholtz resonator

F Liu, S Horowitz, T Nishida, L Cattafesta… - The Journal of the …, 2007 - pubs.aip.org
The development of a tunable, multiple degree of freedom (MDOF) electromechanical
Helmholtz resonator (EMHR) is presented. An EMHR consists of an orifice, backing cavity …

Duct modes damping through an adjustable electroacoustic liner under grazing incidence

R Boulandet, H Lissek, S Karkar, M Collet… - Journal of Sound and …, 2018 - Elsevier
This paper deals with active sound attenuation in lined ducts with flow and its application to
duct modes damping in aircraft engine nacelles. It presents an active lining concept based …

Adaptive metamaterials for broadband sound absorption at low frequencies

Y Liao, X Zhou, Y Chen, G Huang - Smart Materials and …, 2018 - iopscience.iop.org
We propose and design a new adaptive sound absorption metamaterial targeting
broadband airborne noise at extremely low frequencies. The metamaterial consists of two …

Mechanism of low frequency spectral scattering by a side-branch electromagnetic device with switching shunt

L Huang, K Wu, X Han, Y Zhang - Journal of Sound and Vibration, 2023 - Elsevier
Sound waves are reflected and absorbed by a passive side-branch device in a duct. The
performance is limited at low frequencies if the cavity is compact. In this study, an electro …