Results 51 to 60 of about 365,136 (272)
Acoustical characteristic of empty fruit bunch (EFB) fibre with influence of sodium hydroxide treatment time and decay lifespan [PDF]
, 2019 Research on natural fibres has gain much interest in recent years due to the sustaibability and avaibility in which demand for green renewable reinforced composites. Natural fibres can be considered as the alternative way to replace the synthetic fibre
Mat Wan, Lauren
core +1 more source
水下无人系统学报The radiation noise of mechanical noise has a significant impact on the acoustic detection performance of acoustic detection-based underwater gliders. In order to address this problem, this paper introduced sound absorption structure into the study of ...
Donghai ZENG +5 more
doaj +1 more source
A review on polymer-based materials for underwater sound absorption
Polymer Testing, 2021 Greater demands for underwater sound absorption materials have been growing due to the concern about underwater noise control in water. Among the range of existing materials, polymer-based materials are increasingly being utilized as underwater sound ...
Yifeng Fu +3 more
doaj
Ultrathin acoustic metamaterial as super absorber for broadband low-frequency underwater sound
Scientific Reports, 2023 In this work, an ultrathin acoustic metamaterial formed by space-coiled water channels with a rubber coating is proposed for underwater sound absorption. The proposed metamaterial achieves perfect sound absorption ( $$\alpha$$ α > 0.99) at 181 Hz, which
Xindong Zhou +2 more
doaj +1 more source
Acoustic properties of glubam and SPF [PDF]
arXiv, 2022 Noise pollution has attracted a wide attention due to its negative effect on human health, and many researchers are working on proposing strategies or developing new materials to improve acoustic performance of structures and building materials. Meanwhile, the worldwide emphasis on sustainable development has motivated the development and application ...
arxiv
Journal of Materials Research and Technology, 2023 The sandwich structure based on Triply periodic minimal surface (TPMS) is a lightweight and high-strength multifunctional composite material that combines the versatility of heat exchange, impact resistance, and energy absorption, and has been widely ...
Pengfei Zhang +8 more
doaj
Theory of amplification of sound (acoustic phonons) by absorption of laser radiation in quantum wires with parabolic potential [PDF]
arXiv, 2002 Based on the quantum transport equation for the electron-phonon system, the absorption coefficient of sound (acoustic phonons) by absorption of a laser radiation in quantum wires with parabolic potential is calculated for the case of monophoton absorption and the case of multiphoton absorption.
arxiv
Optimised Sound Absorbing Trim Panels for the Reduction of Aircraft Cabin Noise [PDF]
, 2004 The EU project FACE (Friendly Aircraft Cabin Environment) aims to improve the environmental comfort in aircraft cabins. As part of this project, this paper focuses on the reduction of noise in aircraft cabins.
Boer, A. de +2 more
core +1 more source
Journal of Low Frequency Noise, Vibration and Active Control, 2017 In industrial and architectural applications, noise can be controlled using sound-absorbing materials. Natural materials are now gaining importance in the noise control engineering as they have advantages like low cost, eco-friendly, easy to produce, etc.
Pritesh V Bansod +2 more
doaj +1 more source
On the amplification of sound (acoustic phonons) by absorption of laser radiation in cylindrical quantum wires [PDF]
arXiv, 2002 Based on the quantum transport equation for the electron-phonon system, the absorption coefficient of sound (acoustic phonons) by absorption of laser radiation in cylindrical quantum wires is calculated for the case of monophoton absorption process and the case of multiphoton absorption process.
arxiv