Results 71 to 80 of about 2,523,561 (213)

An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure [PDF]

, 2020
Bingpu Zhou, Jiangong Zhang, Xin Li, Bilong Liu   +3 more
openalex   +1 more source

Improvement of Sound-Absorbing Dips in Nonwoven Fabric Sheet with Back Air Space: Division of Back Air Space by Additional Nonwoven Fabric Sheet

Acoustics
This study was conducted to improve the sound absorption dips in nonwoven fabric sheets with a back air space. Considering the particle velocity distribution in the back air space, another nonwoven sheet was added to divide the air space into layers. The
Shuichi Sakamoto, Kodai Sato, Gaku Muroi, Yusuke Nakao, Kaito Kuboki, Nobuhito Taguchi   +5 more
doaj   +1 more source

Estimation of sound absorption coefficient at modal frequencies using decay time measurements and eigenvalue model in a small room [PDF]

Luka Čurović, Jure Murovec, Anže Železnik, Jurij Prezelj   +3 more
openalex   +1 more source

A Compact Multifunctional Metastructure for Low-frequency Broadband Sound Absorption and Crash Energy Dissipation

Materials & Design, 2022
Zhiwen Ren, Y. Chen, Mingji Chen, Xujin Yuan, D. Fang   +4 more
semanticscholar   +1 more source

Improving the Sound Absorption Properties of Flexible Polyurethane (PU) Foam using Nanofibers and Nanoparticles

, 2019
Roohalah Hajizadeh, Ali Khavanin, Mohammad Barmar, Ahmad Jonidi Jafari, Somayeh Farhang Dehghan   +4 more
openalex   +1 more source

104 Technique of aerodynamic noise reduction by porous material : 2nd report: Experimental results of wake velocities and characteristics of sound absorption(2)

, 2007
Takehisa TAKAISHI, Takeyuki SUEKI, Mitsuru Ikeda   +2 more
openalex   +1 more source

Study on the acoustic performance of bending metasurface with ultra-thin broadband quasi-perfect sound absorption

, 2023
Baozhu Cheng, Qiuyu Zeng, Yang Liu, Jiansong Weng, Bin Li, Hong Hou   +5 more
openalex   +1 more source

Producing of Impedance Tube for Measurement of Acoustic Absorption Coefficient of Some Sound Absorber Materials

پزشکی بالینی ابن سینا, 2008
Introduction & Objective: Noise is one of the most important harmful agents in work environment. In spit of industrial improvements, exposure with over permissible limit of noise is counted as one of the health complication of workers.
Rostam Golmohammadi, Mohammad Olyaie, Hamid Samavat, Majid Motamedzadeh   +3 more
doaj  

Evaluation and Analysis of Sound Absorption across Various Types of Hemp Fibre

Environmental and Climate Technologies
Exploring sound absorption solutions, hemp fibre stands out as a compelling replacement for traditional materials like fiberglass, foam, and mineral wool.
Strazdas Edgaras, Januševičius Tomas
doaj   +1 more source

Reproducibility of sound absorption and surface impedance of materials measured in a reverberation room using ensemble averaging technique with a pressure-velocity sensor and improved calibration

, 2018
Noriaki Sakamoto, Toru Otsuru, Reiji Tomiku, Saki Yamauchi   +3 more
openalex   +1 more source