Results 11 to 20 of about 8,910,137 (264)

Investigation on the acoustic properties of structural gradient 316L stainless steel hollow spheres composites

Science and Engineering of Composite Materials, 2021
In this study, a kind of structural gradient metal hollow spheres composites (SG-MHSCs) were fabricated using two kinds of 316L stainless steel hollow spheres with different diameters and A356 aluminum through the casting method.
Wang Chunhe, Guo Chunhuan, Jiang Fengchun   +2 more
doaj   +1 more source

Method for Establishing a Traveling Wave Sound Field with Adaptive Control in a Water-Filled Sound Tube

Applied Sciences, 2021
The transfer function method is a common method for establishing a traveling wave field in a sound tube to measure the reflection and transmission coefficient of underwater material.
Yan Xiao, Xuesong Zhang
doaj   +1 more source

Elaboration and Characterization of Composite Materials Based on Plaster-Gypsum and Mineral Additives for Energy Efficiency in Buildings

Proceedings, 2019
The building sector is one of the largest energy consumers in the world, prompting scientific researchers to find solutions to the problem. The choice of appropriate building materials presents a considerable challenge for improving the thermal comfort ...
Said Bouzit, Mohamed Taha
doaj   +1 more source

Organized Computational Measurement to Design a High-Performance Muffler

Metrology, 2023
Engine noise, as a source of sound pollution for humans and the environment, can be reduced by designing a high-performance muffler. This study presents a novel, organized design process of that muffler for the KTM390 engine as a case study. The acoustic
Mehran Saadabadi, Mahdieh Samimi, Hassan Hosseinlaghab   +2 more
doaj   +1 more source

Analysis on acoustic performance of floating raft vibration isolation system with liquid tank

Zhongguo Jianchuan Yanjiu, 2022
ObjectiveThis paper aims to establish a dynamic model of a floating raft vibration isolation system with a liquid tank in order to study the mass effect of the liquid medium, tank form, structural stiffness and loading rate on acoustic performance ...
Zhiyang LEI, Kun DU, Chongjian WU, Zhigang CHEN, Xiaojie YAN, Jun LIU   +5 more
doaj   +1 more source

Strategic Integration of a Vegetative Component on a Metal Roof Base: An Evaluation of Its Impacts on Thermal and Acoustic Performance in the Tropics

Buildings
This paper attempts to ascertain the thermal and acoustic impacts of introducing a vegetative roof layer on insulated and uninsulated metal roofs for tropical climates, through field measurements in Skudai, Johor, Malaysia, that were conducted for both ...
Siew Bee Aw, Pau Chung Leng, Gabriel Hoh Teck Ling, Keng Yinn Wong, Mohamed Rohaizad Mohamed Anuar, Ismail Wajdi Mohd Rokhibi, Cheah Haur Ng, Nathan Hui Kai Law, Santa Ying Zi Goh   +8 more
doaj   +1 more source

Acoustic Performance of Concrete with Rubber and Vermiculite for Highway Barriers [PDF]

Materials Research
The inadequate disposal of waste tires has caused environmental and public health problems. One of the direct harmful effects is the noise due to traffic.
Lucas Silveira Batista, Fabiana Maria da Silva, Brenno Victor Campos, Luísa Andréia Gachet, José Maria Campos dos Santos, Maria Rachel de Araújo Russo, Rosa Cristina Cecche Lintz   +6 more
doaj   +1 more source

Development of a BIM-Based Framework Using Reverberation Time (BFRT) as a Tool for Assessing and Improving Building Acoustic Environment

Buildings, 2022
Both the building design and the construction process determine the indoor acoustic quality of enclosures. A suitable indoor acoustic environment is crucial for the productivity and well-being of users.
Antonio J. Aguilar, María L. de la Hoz-Torres, Mª Dolores Martínez-Aires, Diego P. Ruiz   +3 more
doaj   +1 more source

Thermal and Acoustic Performance of Gypsum Plasters Mixed with Different Additives: Influence of Bio-Based, Synthetic, and Mineral Fillers

Applied Sciences, 2023
Due to the high impact of the building sector on the environment, a growing interest focuses on insulating materials able to ensure good thermo-acoustic performance for the building envelope from a sustainable and circular economy perspective.
Francesca Merli, Said Bouzit, Mohamed Taha, Cinzia Buratti   +3 more
doaj   +1 more source

The Potential for Glass Wool Waste as a Filler in UF Adhesive to Promote Particleboard Strength

Recycling
Wastes, biomasses, and nanoparticles have motivated reformulations of adhesives in the wood-based-panel industry. This study investigated the incorporation of glass wool (GW) waste as a filler material in urea–formaldehyde (UF) adhesive, evaluating its ...
Michelângelo Vargas Fassarella, Izabella Luzia Silva Chaves, Pedro Gutemberg Alcântara Segundinho, Juarez Benigno Paes, Roberto Carlos Costa Lelis, Michel Picanço Oliveira, Emilly Soares Gomes Silva, Fabricio Gomes Gonçalves   +7 more
doaj   +1 more source