Acoustical properties of electrospun nanofibers for aircraft interior noise reduction
Date
2009Author
Asmatulu, Ramazan
Khan, Waseem Sabir
Yildirim, Mehmet Bayram
Metadata
Show full item recordAbstract
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.
Description
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