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On impedance measurements for samples with non-linear acoustic properties
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Strömningsakustik.ORCID-id: 0000-0002-8474-8563
2008 (Engelska)Ingår i: 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), Vancouver, BC, 2008Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This paper discusses techniques for obtaining the acoustic properties of in-duct samples with non-linear acoustic characteristics such as perforates and other facing sheets used in aircraft engine liners and automotive mufflers. It is assumed that the non-linearity occurs locally at constrictions or sharp corners. The paper starts with a short review of previous impedance tube measurements made for determining the acoustic impedance of non-linear samples. Multi-port techniques using sinusoidal excitation for better characterization of samples with non-linear properties are developed and experimentally tested.

Ort, förlag, år, upplaga, sidor
Vancouver, BC, 2008.
Serie
14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)
Nyckelord [en]
Impedance measurement, Impedance tubes, Multi-port, Non-linear, Non-linear acoustics, Non-Linearity, Nonlinear properties, Sharp corners, Sinusoidal excitations, Aeroacoustics, Aircraft engines, Automobile mufflers, Paper sheeting, Acoustic impedance
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:kth:diva-61818Scopus ID: 2-s2.0-78249247464ISBN: 9781563479397 (tryckt)OAI: oai:DiVA.org:kth-61818DiVA, id: diva2:479707
Konferens
14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), Vancouver, BC, 5 May 2008 through 7 May 2008
Anmärkning
QC 20120221Tillgänglig från: 2012-01-18 Skapad: 2012-01-18 Senast uppdaterad: 2022-06-24Bibliografiskt granskad

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Scopushttp://www.scopus.com/inward/record.url?eid=2-s2.0-78249247464&partnerID=40&md5=ab53590fe5504ade53fe7c152cd3aa05

Person

Bodén, Hans

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Totalt: 260 träffar
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