The mechanism for the shift of the band-gap in two kinds of finite phononic crystals
(PCs)(steel/epoxy and aluminum/epoxy) with different initial stresses is studied …

We developed a sound absorber using a magnetorheological fluid (MR-F) based on the
density and alignment angle of carbonyl iron powder (CIP) chains by the controlling the …

Magnetorheological Fluids (MR) have been recently utilized in sandwich panels to provide
variable stiffness and dam** to effectively control vibrations. In this study, the sound …

Investigations are made to determine the effect of magnetic field on the Sound Transmission
Loss (STL) of smart multilayered panels incorporating MR layers. The acoustic model of a …

Tunable polymer-based sonic structures (“TuPSS”) are made up of sonic structures and
polymers. The TuPSS has three general requirements: a) The sonic structure is composed of …

This study aims to investigate the sound transmission loss (STL) capability of sandwich
panels treated with Magnetorheological (MR) fluids at low frequencies. An experimental …

The mechanism of the shift of the band-gap in phononic crystal (PC) with different initial
confining pressures is studied experimentally and numerically. The experimental results and …

An acoustic material can be electromagnetically tuned to produce alterations in its acoustical
properties without physi cal contact. The acoustic material should contain a periodic …

A metamaterial structure formed by foamed metal and starch and oil-based
electrorheological (ER) fluid is designed in this paper. Experiments show that the …