Zobrazeno 1 - 10
of 6 965
pro vyhledávání: '"Sound Absorption"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Controlling the absorption and diffusion of sound in the audible range constitutes an exciting field of research. Acoustic absorbers and diffusers perform extraordinarily well at high frequencies with sizes comparable to the wavelength of th
Externí odkaz:
https://doaj.org/article/8a016eb4646943d7b4b6d6f5ef517bba
Publikováno v:
Science and Engineering of Composite Materials, Vol 31, Iss 1, Pp 159-64 (2024)
The acoustic performance of metal hollow sphere (MHS) A356 aluminum matrix composites has a significant impact on their application, making it worthy of in-depth investigation. To investigate the acoustic performance and mechanism of MHS A356 aluminu
Externí odkaz:
https://doaj.org/article/955aa712201c4b2789af4c0e41536789
Publikováno v:
Vestnik MGSU, Vol 19, Iss 9, Pp 1521-1529 (2024)
Introduction. Sound-absorbing systems are widely used in construction, reconstruction, repair of industrial and civil facilities, as well as in mechanical engineering. The most affordable and widely used systems are those using porous materials. The
Externí odkaz:
https://doaj.org/article/754d3a116e5842628abe82e7bf3316c4
Publikováno v:
Modelling, Vol 5, Iss 3, Pp 969-989 (2024)
Effective sound absorption is crucial in environments like schools and hospitals. This study evaluates open-pore polyurethane foam and perforated onyx panels, which attenuate noise via distinct mechanisms: porous materials convert sound energy to hea
Externí odkaz:
https://doaj.org/article/862ae357a31640789d0a41a591e8aad8
Autor:
Ahmed Abdelhamid Maamoun, Ramadan M. Abouomar, Tarek M. El-Basheer, Mostafa A. Azab, ElSayed G. Zaki, Shymaa M. Elsaeed, Ahmed Elkhateeb
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-20 (2024)
Abstract This study aims to investigate the potential of integrating natural biochar (BC) derived from eggshell waste into flexible polyurethane (FPU) foam to enhance its mechanical and acoustic performance. The study explores the impact of incorpora
Externí odkaz:
https://doaj.org/article/01e72f9d8da843da9636b7cbbc250b0a
Publikováno v:
BioResources, Vol 19, Iss 3, Pp 5568-5585 (2024)
This study was conducted to investigate some characteristics of thermally treated Scots pine (Pinus sylvestris L.) wood specimens such as air-dried density, color change, average surface roughness, and sound absorption capacity. Heat treatment of Sco
Externí odkaz:
https://doaj.org/article/2e975794b01740b884ad13627f7042d8
Autor:
Jurgita Malaiškienė, Tomas Astrauskas, Tomas Januševičius, Olga Kizinievič, Viktor Kizinievič
Publikováno v:
Results in Engineering, Vol 24, Iss , Pp 103266- (2024)
Abstract.: Rubber waste is an important and growing part of waste. Despite variation by country due to socioeconomic factors and waste management, the rubber content remains high. The construction industry, with its large material needs, provides a p
Externí odkaz:
https://doaj.org/article/fc95cd09e2fa4e7d8092055e194b542d
Autor:
Wei Xue, Yi Feng, Jian Wang, Zumin Fang, Jiawen Shen, Yunfan Ma, Yueru Wang, Hechen Liu, Le Li
Publikováno v:
Frontiers in Materials, Vol 11 (2024)
To explore sound-absorbing and flame-retardant materials that meet the requirements for double-shielded and double-insulated Faraday cages, polymethyl methacrylate (PMMA) microspheres were incorporated into epoxy resin-based syntactic foam materials
Externí odkaz:
https://doaj.org/article/a54516a051834504abedfbebba905abe
Autor:
Zongxin Hu, Junhao Ding, Shuwei Ding, Winston Wai Shing Ma, Jun Wei Chua, Xinwei Li, Wei Zhai, Xu Song
Publikováno v:
Virtual and Physical Prototyping, Vol 19, Iss 1 (2024)
Currently, the development in shell-based lattice, is increasingly focused on multifunctionality, with growing interest in combining sound and energy absorption. However, few studies have explored the multi-objective inverse design process. Herein, w
Externí odkaz:
https://doaj.org/article/4c225b918f124cfcacb0d6387731370f
Autor:
Xiangyu Wang, Liangfen Du, Zhenbang Liu, Mingyang Li, Yiwei Weng, Zhixin Liu, Yi Wei Daniel Tay, Zheng Fan, Teck Neng Wong, Ming Jen Tan
Publikováno v:
Virtual and Physical Prototyping, Vol 19, Iss 1 (2024)
Cementitious materials incorporating recycled crumb rubber have become a common sustainable resolution in diverse building environments to achieve various functions in terms of lightweight, ductility, as well as energy absorption. This study explored
Externí odkaz:
https://doaj.org/article/f2712b5d718b48929dfb58e44204ff69