Results 31 to 40 of about 299,226 (303)
Recent Advances in the Sound Insulation Properties of Bio-based Materials
BioResources, 2013 Many bio-based materials, which have lower environmental impact than traditional synthetic materials, show good sound absorbing and sound insulation performances. This review highlights progress in sound transmission properties of bio-based materials and
Xiaodong Zhu +3 more
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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
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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 +3 more
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Journal of the Acoustical Society of America, 2020 Acoustic metamaterials (AM) have emerged as an academic discipline within the last decade. When used for sound insulation, metamaterials can show high transmission loss at low frequencies, despite having low mass per unit area.
Javier Hernan Vazquez Torre +2 more
semanticscholar +1 more source
Journal of Sound and Vibration, 2020 Helmholtz resonators are commonly used as narrowband sound absorbers in room acoustics applications. Previous research has shown that Helmholtz resonators can also be used to improve the sound transmission loss of double walls. The focus of this paper is
F. Langfeldt, H. Hoppen, W. Gleine
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami +4 more
wiley +1 more source
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 +2 more
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Advanced Functional Materials, EarlyView.Grain boundaries (GBs) in polycrystalline materials often block charge transport and drive degradation. Using Gd‐doped CeO2 as a model electrolyte used in fuel/electrolysis cells, we developed a core‐shell infiltration method to selectively modify GB chemistry and space charge potential, achieving orders‐of‐magnitude ionic conductivity changes.
Z. Sha +5 more
wiley +1 more source
Sound transmission loss optimization of clamped double-panels
Journal of Low Frequency Noise, Vibration and Active ControlThe 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 +6 more
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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 +3 more
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