Acoustical properties of electrospun nanofibers for aircraft interior noise reduction

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Authors
Asmatulu, Ramazan
Khan, Waseem Sabir
Yildirim, Mehmet Bayram
Issue Date
2009
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Conference paper
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en_US
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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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