A nanofibrous acoustic system based on the cavity/membrane resonance principle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F18%3A00000763" target="_blank" >RIV/46747885:24620/18:00000763 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24620/16:00000763

Result on the web

<a href="http://journals.sagepub.com/doi/pdf/10.1177/0040517516685285" target="_blank" >http://journals.sagepub.com/doi/pdf/10.1177/0040517516685285</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/0040517516685285" target="_blank" >10.1177/0040517516685285</a>

Result language

angličtina

Original language name

A nanofibrous acoustic system based on the cavity/membrane resonance principle

Original language description

Room acoustic solutions are based on measurements of the acoustic power of the room and acoustic elements with different functions (absorption tiles, absorption ceilings, absorption bodies, diffusers, barriers). This work is focused only on absorption elements, with an emphasis on addressing lower frequencies. The goal of this research is achieved by sound absorbing means which contains a cavity resonator with a nanofibrous resonant membrane, which overlaps orifices of the cavity resonator. The design of the material is based on broadband noise. Absorption of lower frequencies is restricted to a certain extent by the final thickness of the acoustic material. A two-microphone impedance tube for determining the sound absorption coefficient was used to measure the limited frequency spectrum 100–1600 Hz. These frequencies, however, cover the area particularly focusing on middle and lower frequencies. The principle of the acoustic system consists in using combination of a cavity resonator, by which the air or other material contained in its cavities is forced into vibration upon impact of sound waves of high frequency, and a nanofibrous resonant membrane, which is forced into vibration upon impact of sound waves of low frequency. The optimal arrangement of holes inside the perforated plate, according to broadband sound absorption, has been found.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

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

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Textile Research Journal

ISSN

0040-5175

e-ISSN

—

Volume of the periodical

88

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

644-653

UT code for WoS article

000429952000006

EID of the result in the Scopus database

2-s2.0-85042486878