Results 21 to 30 of about 43,909 (261)

A NOTE ON METHODS FOR THE ESTIMATION OF THE AIRBORNE SOUND INSULATION OF TIMBER FRAME STRUCTURES [PDF]

Civil Engineering Journal, 2016
Acoustic behavior of structures with wooden elements is nowadays of great interest. At the same time, the estimation of the airborne sound insulation of timber frame structures is a complex procedure which includes the prediction of several resonances ...
Jan Šlechta
doaj   +1 more source

An approach on the vibro-acoustic properties of composite sandwich plates with foam core

Vietnam Journal of Mechanics, 2022
In this paper, an approach is proposed and presented to tackle the vibro-acoustic properties of finite clamped composite sandwich plates with foam core.
Tran Ich Thinh
doaj   +1 more source

A simple formula for insertion loss prediction of large acoustical enclosures using statistical energy analysis method

International Journal of Naval Architecture and Ocean Engineering, 2014
: Insertion loss prediction of large acoustical enclosures using Statistical Energy Analysis (SEA) method is presented. The SEA model consists of three elements: sound field inside the enclosure, vibration energy of the enclosure panel, and sound field ...
Hyun-Sil Kim, Jae-Seung Kim, Seong-Hyun Lee, Yun-Ho Seo   +3 more
doaj   +3 more sources

Comparasion of prediction and measurement methods for sound insulation of lightweight partitions [PDF]

Facta Universitatis. Series: Architecture and Civil Engineering, 2012
It is important to know the sound insulation of partitions in order to be able to compare different constructions, calculate acoustic comfort in apartments or noise levels from outdoor sources such as road traffic, and find engineer optimum solutions ...
Praščević Momir, Cvetković Dragan, Mihajlov Darko   +2 more
doaj   +1 more source

Multistage, Self‐Sensing Artificial Muscles With Coordination From Liquid Crystal Elastomer‐Graphene Composite Fibers

Advanced Functional Materials, EarlyView.
Inspired by skeletal muscles’ precision and endurance, CoilLCE integrates a self‐sensing liquid crystal elastomer/graphene artificial muscle with an embedded Joule‐heating copper coil, enabling closed‐loop multistage actuation with programmable intermediate states (strain accuracy of 2%), and antagonistic coordination (32% total strain). These features
Ziyun Zhang, Xuelin Wu, Yinding Chi, Qingya Huang, Yaoye Hong, Antonio Proctor Martinez, Jingxian Wu, Bingzhi He, Cynthia Sung, Shu Yang   +9 more
wiley   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

Sound transmission loss optimization of clamped double-panels

Journal of Low Frequency Noise, Vibration and Active Control
The panel cavity structure is one of the key components of the aircraft (vehicle) body and is among the main noise transmission pathways. Based on the modal superposition and Galerkin method, this paper realizes the theoretical model of sound insulation ...
Yumei Zhang, Ye Li, Xinbiao Xiao, Yue Zhao, Dan Yao, Yi Ai, Weijun Pan   +6 more
doaj   +1 more source

Research on acoustic conduction mechanism of underwater acoustic channel based on metamaterials

AIP Advances, 2020
In underwater acoustic communication, there are problems of low transmission efficiency, severe loss, and inaccurate point-to-point transmission. To realize the efficient transmission of underwater acoustic communication based on finite element analysis,
Xinsa Zhao, Peng Yang, Rongrong Zhao, Jianning Han   +3 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Influence of the type of fastening of multi-layered closing panels on the estimate of the sound transmission loss

REM: International Engineering Journal
Industrialized closing systems appear as rational solutions in steel-structured construction. These closing systems, consisting of multi-layered panels, have been applied in projects where it is intended to obtain a high sound transmission loss without ...
Rovadávia Aline de Jesus Ribas, Henor Artur Souza   +1 more
doaj   +1 more source