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Description
  • Because the absorption of lower frequency sound is problematic with fibrous material made up of coarser fibers, highly efficient sound absorption materials must be developed. The focus of this paper is the development of a new material with high acoustic absorption characteristics. For low-frequency absorption, structures based upon the resonance principle of nanofibrous layers are employed in which the resonance of some elements allows acoustic energy to be converted into thermal energy. A nanofibrous membrane was produced by an electrostatic spinning process from an aqueous solution of polyvinyl alcohol and the acoustic characteristics of the material measured. The resonant frequency prediction for the nanofibrous membrane is based on research into its production parameters. The distance between electrodes during the electrostatic spinning process determines the average diameter of the nanofibers and the outlet velocity of the material determines its area density. The average diameter of nanofibers was measured using the Lucia software package directly from an electron microscope image. The resonant frequency of nanofibrous membranes was determined from the sound absorption coefficient and transmission loss measurement. Two dependency relationships were studied to determine the resonant frequency: the electrode distance during the electrostatic spinning process and the area density of the material. A Type 4206 Impedance Measurement Tube featuring dual microphones was used to measure the sound absorption coefficient and transmission loss in the 50 Hz-6.4 kHz range.
  • Because the absorption of lower frequency sound is problematic with fibrous material made up of coarser fibers, highly efficient sound absorption materials must be developed. The focus of this paper is the development of a new material with high acoustic absorption characteristics. For low-frequency absorption, structures based upon the resonance principle of nanofibrous layers are employed in which the resonance of some elements allows acoustic energy to be converted into thermal energy. A nanofibrous membrane was produced by an electrostatic spinning process from an aqueous solution of polyvinyl alcohol and the acoustic characteristics of the material measured. The resonant frequency prediction for the nanofibrous membrane is based on research into its production parameters. The distance between electrodes during the electrostatic spinning process determines the average diameter of the nanofibers and the outlet velocity of the material determines its area density. The average diameter of nanofibers was measured using the Lucia software package directly from an electron microscope image. The resonant frequency of nanofibrous membranes was determined from the sound absorption coefficient and transmission loss measurement. Two dependency relationships were studied to determine the resonant frequency: the electrode distance during the electrostatic spinning process and the area density of the material. A Type 4206 Impedance Measurement Tube featuring dual microphones was used to measure the sound absorption coefficient and transmission loss in the 50 Hz-6.4 kHz range. (en)
Title
  • Nanofibrous Resonant Membrane for Acoustic Applications
  • Nanofibrous Resonant Membrane for Acoustic Applications (en)
skos:prefLabel
  • Nanofibrous Resonant Membrane for Acoustic Applications
  • Nanofibrous Resonant Membrane for Acoustic Applications (en)
skos:notation
  • RIV/46747885:24410/11:#0001080!RIV12-MSM-24410___
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I
http://linked.open...iv/cisloPeriodika
  • 2011
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 214763
http://linked.open...ai/riv/idVysledku
  • RIV/46747885:24410/11:#0001080
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Nanofibrous, Resonant, Membrane, Acoustic (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [7201D10F0D36]
http://linked.open...i/riv/nazevZdroje
  • Journal of Nanomaterials
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 2011
http://linked.open...iv/tvurceVysledku
  • Kalinová, Klára
http://linked.open...ain/vavai/riv/wos
  • 000296806600001
issn
  • 1687-4110
number of pages
http://bibframe.org/vocab/doi
  • 10.1155/2011/265720
http://localhost/t...ganizacniJednotka
  • 24410
is http://linked.open...avai/riv/vysledek of
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