Results 21 to 30 of about 4,345 (258)

Acoustic Properties of Multi-Layer Wool Nonwoven Structures

Journal of Natural Fibers, 2020
Wool insulating materials provide good acoustic insulation and are increasingly used for room insulation. These insulating materials are usually produced using nonwoven techniques.
Jan Broda, Marcin Bączek
doaj   +1 more source

Sound Insulating Properties of Certain Building Materials [PDF]

The Journal of the Acoustical Society of America, 1935
Transmission loss data obtained in the Johns-Manville Laboratories on various building constructions are reported. Almost all this data has been obtained on “room size” floors and partitions. The relation between such tests and “panel” tests is given where data is available.
openaire   +1 more source

Acoustical properties of some modern partitioning glass walls systems – case study [PDF]

Constructii: Journal of Civil Engineering Research, 2014
The case study presents the results of laboratory measurements carried out for the determination of airborne sound insulation properties for various modern partition glass walls systems.
Ioana-Mihaela ALEXE, Marta-Cristina ZAHARIA   +1 more
doaj  

Thermal insulation and sound absorption properties of fibrous layered structures

Journal of Structural Engineering & Applied Mechanics, 2023
In this study, the effects of the addition of Activated carbon powder (ACP), Polyacrylonitrile nanofiber web (PAN), application of Plasma treatment (P), and the number of treatment layers on thermal insulation and sound absorption properties of fibrous structures have been examined and compared to each other. Bamboo and E-glass fibers have been used to
Canan Sarıçam, Nazan Okur, Nuray Uçar, Nevin Çiğdem Gürsoy   +3 more
openaire   +1 more source

Development Of Prediction Tool For Sound Absorption And Sound Insulation For Sound Proof Properties

, 2015
{"references": ["Ohta M., et al, A Unified Theory of Sound Transmission Loss of General\nDouble Walls and its Practical Application to the Double Wall with\nSound Absorbent Material in the Cavity, The Acoustical Society of Japan\nVol. 34 No.1, 1978, pp.3.", "Ohta M., et al, A Unified Theory of Sound Transmission Loss of General\nDouble Walls and its ...
Kurosawa, Yoshio, Yamaguchi, Takao
openaire   +2 more sources

The influence of thermal insulation selection on a facade sound insulation property – theoretical case study

Proceedings of InterNoise 2019, 2019
Impact of the external thermal insulation composite system (ETICS) on the sound reduction index improvement is widely discussed topic. ETICSs are already several years commonly used to reduce buildings thermal loses. However, its application can negatively influence facades sound insulation properties.
Urbán, D., Roozen, Nicolaas Bernardus, Jiříček, O.   +2 more
openaire   +3 more sources

Effects of Molding Pressure on Mechanical and Sound Insulation Properties of Hybrid Composites Reinforced with a Core–Shell Structure Composed by Continuous Sisal and Carbon Fiber

Journal of Natural Fibers
Natural fiber has been widely used as reinforcement in polymer composites, and the excellent sound insulation and lower mechanical properties of natural fiber increased research interest in hybrid fiber-reinforced composites.
Kaomin Zhang, Fenglin Tian, Xiaoyu Yang, Haiting Xia, Yinghui Zhao, Zhenhu Miao, Yongtian Zou   +6 more
doaj   +1 more source

Adjustable Magnetic-Control Design of a Metasurface for Sound Insulation

Frontiers in Mechanical Engineering, 2022
Magnetic field is one efficient approach to realize non-contact control of materials. Here, we propose a type of membrane-based metasurface consisting of several parts of magnetorheological films embedded with magnetic particles, which enable non-contact
Pu Xia, Yun Lai, Xiaozhou Liu
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Lightweight Composite Building Materials with Hemp (Cannabis Sativa L.) Additives

Chemical Engineering Transactions, 2017
The scope of our research was to evaluate the potential of the content of fibre and shives in the biomass of industrial hemp cultivars grown under different nitrogen fertiliser rates to use them for increasing the energy efficiency as a thermal ...
R. Brencis, S. Pleiksnis, J. Skujans, A. Adamovics, U. Gross   +4 more
doaj   +1 more source