Results 61 to 70 of about 2,523,561 (213)

Sound Absorption Properties Of Single-Hole Hollow Polyester Fiber Reinforced Hydrogenated Carboxyl Nitrile Rubber Composites

AUTEX Research Journal, 2017
A series of single-hole hollow polyester fiber (SHHPF) reinforced hydrogenated carboxyl nitrile rubber (HXNBR) composites were fabricated. In this study, the sound absorption property of the HXNBR/SHHPF composite was tested in an impedance tube, the ...
Jie Hong, Sheng Jiang, Xiong Yan
doaj   +1 more source

Temperature dependence of the absorption of fourth sound in He II [PDF]

, 1975
N. E. Dyumin, É. Ya. Rudavskiı̆
openalex   +1 more source

Investigation of Sound Absorption Performance of Roof Panels in Automobiles [PDF]

, 2022
Yahya Işık, Mustafa Tuzla
openalex   +1 more source

Sound‐Insulation Performance of Polylactic Acid Parts 3D Printed by Fused Filament Fabrication with Functionally Graded Porous Structure for Effective Noise Reduction

Macromolecular Materials and Engineering
The emergence of 3D printing technology has enabled the fabrication of absorbers with functionally graded (FG) porous structure and controlled porosity that can absorb sound waves across a broader frequency range.
Reza Navidpour, Taher Azdast, Rezgar Hasanzadeh, Milad Moradian, Peyman Mihankhah, Asghar Rasouli   +5 more
doaj   +1 more source

Sound Absorption Characteristics of Unsaturated Porous Material Calculated by Modified Transfer Matrix Method

Buildings
Porous materials have emerged as one of the most widely employed sound-absorbing materials in practical applications, owing to their excellent sound absorption properties and lightweight nature.
Yiguo Yin, Wei Guan
doaj   +1 more source

Sound absorption height and width limits for polymer glass transitions [PDF]

, 1995
Bruce Hartmann, Gilbert F. Lee, John D. Lee, Jeffry J. Fedderly   +3 more
openalex   +1 more source

Investigating the Sound Absorption Performance of Circular and Slotted Perforated Birch (Betula platyphylla) Plywood as Interior Building Materials

BioResources
The use of perforated plywood as an interior architectural sound-absorbing material has been increasing in popularity in Korea. This study investigated the sound absorption performance of marketed birch (Betula platyphylla) plywood with circular and ...
Eun-Suk Jang, Seok-Un Jo, Chun-Won Kang, Hee-Jun Park   +3 more
doaj   +2 more sources

On-demand prediction of low-frequency average sound absorption coefficient of underwater coating using machine learning

Results in Engineering
This study proposes an underwater coating with sound absorption ability in the middle-to-low frequency range and establishes an acoustic theoretical model combining the equivalent medium theory and the transfer matrix method.
Nansha Gao, Mou Wang, Xiao Liang, Guang Pan   +3 more
doaj   +1 more source

Preparation and sound absorption performance of low‐carbon fly ash cenosphere plates

International Journal of Ceramic Engineering & Science
A series of low‐carbon fly ash cenosphere plates was prepared using solid waste based cementitious material as binder through a simple process; meanwhile, effects of cenosphere's particle size and size distribution on microstructure and properties were ...
Yongli Yi, Chu Li, Yu Han, Jingkai Nie, Chao Fan, Qiang He   +5 more
doaj   +1 more source

Noise Reduction in Helicopter Cabins Using Microperforated Panel Composite Sound Absorption Structures

, 2023
Chenglei Li, Yang Lu, Chunbo Lan, Yang Wang   +3 more
openalex   +2 more sources