Noise pollution impacts the well-being of millions of people on a daily basis and can lead to
serious health issues such as hearing loss and stress. Developing efficient yet cost-effective …

Transfer function form, zpk, state space, modal, and state space modal forms. For someone
learning dynamics for the first time or for engineers who use the tools infrequently, the …

Acoustic metamaterials provide a powerful tool for designing effective noise-reducing means
at subwavelength scales. This paper is concerned with the sound insulation characteristics …

In this paper, the question of the acoustical determination of macroscopic thermal
parameters used to describe heat exchanges in rigid open-cell porous media subjected to …

Spontaneous coal bunker combustion disasters not only cause a waste of resources, but
also cause huge economic losses and heavy casualties. The existing coal spontaneous …

Given the quest for mass reduction while preserving proper vibration and acoustic comfort
levels in industrial machinery and vehicles, lightweight poroelastic materials have gained a …

The transfer matrix method (TMM) is used conventionally to predict the acoustic properties of
laterally infinite homogeneous layers assembled in series to form a multilayer. In this work, a …

A biodegradable, lightweight, and flexible smart PU foam was manufactured using
absorption and hydrothermal reduction process and tested for its acoustic properties per …

An experimental method to estimate the acoustical parameters of perforated facings used for
noise control applications is proposed. These perforating facings (also called screens) can …

For modeling of jute as acoustic material, knowledge of its non-acoustical parameters like
porosity, tortuosity, air flow resistivity, thermal and viscous characteristic lengths is a prime …