A Sound Absorptive Element Comprising an Acoustic Resonance Nanofibrous Membrane

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F15%3A00002313" target="_blank" >RIV/46747885:24620/15:00002313 - isvavai.cz</a>
Result on the web
<a href="http://www.eurekaselect.com/129379/article" target="_blank" >http://www.eurekaselect.com/129379/article</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2174/187221050901150311102407" target="_blank" >10.2174/187221050901150311102407</a>

Result language
angličtina
Original language name
A Sound Absorptive Element Comprising an Acoustic Resonance Nanofibrous Membrane
Original language description
As absorption of sound of lower frequencies is quite problematic with fibrous material made up of coarser fibers, development of highly efficient sound absorption material is called for. This is why this work deals with the development of new high soundabsorption material. To absorb the low frequencies, especially the structures based on resonance principle of nanofibrous layers are used, when through resonance of some elements the acoustic energy is transferred into thermal energy. The goal of the invention is achieved by a sound absorbing means which contains resonance membrane formed by a layer of polymeric nanofibers, which is attached to a frame. For production of nanofibrous membranes, the cord electrospinning was used. The resonance membrane was then, upon impact of sound waves of low frequency, brought into forced vibrations, whereby the kinetic energy of the membrane was converted into thermal energy by friction of individual nanofibers, by the friction of the membrane with a
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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