Sound Absorption by Acoustic Microlattice with Optimized Pore Configuration [PDF]
, 2017 Sound absorption or dissipation principally involves joint interactions between sound waves, material morphology and the air medium. How these elements work most efficiently for sound absorption remains elusive to date. In this paper, we suggest a fundamental relation concisely cross-linking the three elements, which reveals that optimal sound ...
arxiv +1 more source
Physical and Mechanical Characteristics Analysis of Partition Composite Board Made of Coconut Shell Material [PDF]
, 2023 This research aims to examine the effect of the thickness of coconut shell composite board on elasticity, sound absorption, water absorption, and density.
Faresta, Rangga Alif +2 more
core +1 more source
Ultralight micro-perforated sandwich panel with hierarchical honeycomb core for sound absorption
Journal of Sandwich Structures and Materials, 2021 A theoretical model is developed to study the superior sound absorption performance of ultralight mirco-perforated sandwich panels with double-layer hierarchical honeycomb core.
W. He, Xiangjun Peng, F. Xin, T. Lu
semanticscholar +1 more source
Novel sound absorption materials produced from air laid non-woven feather fibres [PDF]
, 2018 This research has investigated the use of feather fibres to produce sound absorption materials as an alternative to the oil derived synthetic plastics that currently dominate the sound absorption materials market.
Cheeseman, C +3 more
core +1 more source
Potensi Sekam Padi dan Jerami sebagai Alternatif Material Akustik [PDF]
, 2020 Technology that is increasingly developing produces equipments in the form of information, communication, production, transportation and entertainment facilities. Most of the equipments produce noises. Noise can be reduced by using acoustic dampers. This
Fianti, Fianti +2 more
core +2 more sources
Sound and Heat Absorption by a 2D Electron Gas in an Odd-Integer Quantized-Hall Regime [PDF]
Phys. Rev. B 61, 5461 (2000), 1999 The absorption of bulk acoustic phonons in a two-dimensional (2D) GaAs/AlGaAs heterostructure is studied (in the clean limit) where the 2D electron-gas (2DEG), being in an odd-integer quantum-Hall state, is in fact a spin dielectric. Of the two channels of phonon absorption associated with excitation of spin waves, one, which is due to the spin-orbit ...
arxiv +1 more source
Holzforschung, 2021 In this study, the sound absorption coefficient of three low density hardwoods – binuang, balsa and paulownia – were investigated. Their gas permeability and pore size were measured, and their pore shapes were classified into through pore, blind pored ...
E. Jang, C. Kang
semanticscholar +1 more source
Physical and acoustic properties of petroleum and renewable based polyurethane foam filled with shorea leprosula [PDF]
, 2018 Physical and acoustic properties of petroleum-based polyurethane (PU) and renewable based polyurethane (RPU) foam composites filled with Shorea Leprosula (Red Meranti) fiber filler has been investigated.
Mohd Azahari, Muhammad Shafiq
core +1 more source
Hybrid acoustic metamaterial as super absorber for broadband low-frequency sound [PDF]
, 2017 A hybrid acoustic metamaterial is proposed as a new class of sound absorber, which exhibits superior broadband low-frequency sound absorption as well as excellent mechanical stiffness/strength.
Chen, Tianning +7 more
core +1 more source
Wettability and sound absorption of graphene oxide doped polymer hydrogel
Scientific Reports, 2021 In this paper, we introduce a nanocomposite as a humidity-sensitive sound absorber. The nanocomposites were prepared using hydrogel polymer (HP) as a matrix and graphene oxide (GO) as a filler. Results show that the surface energy of the nanocomposite is
A. Khosrozadeh +3 more
semanticscholar +1 more source