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Acoustical properties of electrospun nanofibers for aircraft interior noise reduction
Asmatulu, Ramazan Khan, Waseem Sabir Yildirim, Mehmet Bayram
Asmatulu, Ramazan
Khan, Waseem Sabir
Yildirim, Mehmet Bayram
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Conference paper
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2009
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Abstract
Electrospun micro and nanofibers produced via
electrospinning method were used for the sound absorption
purposes. Polymers were initially dissolved in
dimethyleformamide (DMF) or ethanol with a ratio of 80:20
and electrospun at 20 kV, 20 cm separation distance and 3
ml/hrs pump speed. The two-microphone transfer function
method of the B&K impedance tube was used to determine the
acoustical properties of the manufactured nanofibers at various
frequencies. The test results showed that the absorption
coefficients of nanofibers (~500 nm) drastically increased. The
reason behind this phenomenon may be attributed to the higher
surface area of nanofibers and their interactions with more
sound waves/air molecules. This result may open up new
possibilities for the sound absorption problems in many fields,
such as aircrafts, other transportation vehicles and
infrastructures.
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This is the author's copy of the conference paper published in the proceedings of the ASME International Mechanical Engineering Congress and Exposition, Lake Buena Vista, Florida - November 13-19, 2009, pp.1-7
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Proceedings of the ASME 2009 International Mechanical Engineering Congress & Exposition, November 13-19, Lake Buena Vista, Florida, USA;