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1 sty 2021 · Noise reduction materials exhibit good absorption and transmission of the sound waves than the reflection. Based on the porosity, different materials possess different sound absorption coefficients (SAC).
- Recent progress in acoustic materials and noise control strategies – A ...
The present review discusses a wide range of sound absorbing...
- Recent progress in acoustic materials and noise control strategies – A ...
1 wrz 2021 · The present review discusses a wide range of sound absorbing materials for applications in the automotive industry, interior, buildings and infrastructure, with an in-depth discussion of their sound absorption mechanisms and a variety of strategies of improving sound absorption performance.
5 mar 2022 · Sound absorption mechanism, material modification and structural design of various synthetic fiber materials for industrial noise reduction are reviewed in this paper for the problems of low sound absorption coefficient (SAC) and narrow frequency band of porous materials.
28 kwi 2022 · The Special Issue, “Acoustic Properties of Sound-Absorbing Materials”, collected the most recent advances in the broad-spectrum characterization of sound-absorbing materials used in civil, industrial, and tertiary applications, by means of experimental, numerical, or theoretical studies.
The sound absorption and transmission of the system were theoretically analysed, revealing unidirectional performances, given the broken geometrical symmetry introduced by the chirped design. Optimized layers of porous materials have also shown promise of reaching perfect and broadband sound absorption . In this case, the performance ...
5 dni temu · The industrial production of waste wool/PU sound-absorbing composites is a promising field, as it not only enables the green recycling of wool, but also effectively utilizes waste PU foam. ... The innovative sound-absorbing materials developed in this study skillfully integrate the dual benefits of porous and resonant sound absorption ...
6 dni temu · Strategy of airborne sound absorption via triboelectric effect. To mitigate low-frequency environmental noises, acoustic waves with frequencies below 1600 Hz (corresponding wavelength above 216 mm ...
