Sound Absorbing Resonator Based on the Framed Nanofibrous Membrane

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F19%3A00006894" target="_blank" >RIV/46747885:24620/19:00006894 - isvavai.cz</a>
Result on the web
<a href="https://www.intechopen.com/books/acoustics-of-materials/sound-absorbing-resonator-based-on-the-framed-nanofibrous-membrane" target="_blank" >https://www.intechopen.com/books/acoustics-of-materials/sound-absorbing-resonator-based-on-the-framed-nanofibrous-membrane</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5772/intechopen.82615" target="_blank" >10.5772/intechopen.82615</a>

Result language
angličtina
Original language name
Sound Absorbing Resonator Based on the Framed Nanofibrous Membrane
Original language description
The sound absorbing means are based on a resonance membrane formed by a layer of polymeric nanofibers, which is restricted by a frame. The resonance membrane is then, upon impact of sound waves, brought into forced vibrations, whereby the kinetic energy of the membrane is converted into thermal energy by friction of individual nanofibers, by the friction of the membrane with ambient air and possibly with other layers of material arranged in its proximity. Moreover, part of the kinetic energy of the membrane is transmitted to the frame, to which the membrane is securely attached, and other part is converted into thermal energy due to increased friction in its inner structure, which is caused by the fact that the neighboring parts of the membrane, separated at least partially by the frame or its elements, may vibrate with mutually different periods and/or deviations. The frame is formed by a mesh of grid that can be regular in order to obtain uniform properties over the whole area of the sound absorbing material. The size and shape of the mesh affect the sound absorption or more precisely resonance behavior of the means. To obtain desired sound absorbing characteristics, the resonance membrane is connected to the frame with positive, zero, or negative tension.
Czech name
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Czech description
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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
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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