Influence of pressurization on sound insulation of curved airplane panels
2005 (English)In: 12th International Congress on Sound and Vibration 2005: ICSV 2005, 2005, 4843-4850 p.Conference paper (Refereed)
he purpose of this paper is to investigate the pressurization effects on sound transmission through airplane panels. The airborne sound transmission through airplane panels under the condition of overpressure at one side has been investigated by measurement. The test results agree well with the theoretic prediction of infinite cylindrical shell model at high frequencies, but have considerable discrepancies at low frequencies, which, however, are ready to be explained by the influence of finiteness and stiffeners of the panel. When the frequency is higher than the ring frequency of curved panel, both test and theoretic prediction reveal that the overpressure under laboratory conditions tends to reduce the sound transmission loss at the rate of about 0.5dB/10000 Pa. while at low frequencies, say below around the ring frequency, the overpressure may increase the sound transmission loss of ring-stiffened panel, the reason of this behavior is resulted from the shift of the resonant frequencies led by the increased in-plane tension.
Place, publisher, year, edition, pages
2005. 4843-4850 p.
, 12th International Congress on Sound and Vibration 2005, ICSV 2005, Vol. 6
IdentifiersURN: urn:nbn:se:kth:diva-59542ScopusID: 2-s2.0-84881566798ISBN: 978-162748149-6OAI: oai:DiVA.org:kth-59542DiVA: diva2:475686
12th International Congress on Sound and Vibration 2005, ICSV 2005; Lisbon, Portugal, 11-14 July, 2005
QC 201408122012-01-112012-01-112014-08-12Bibliographically approved