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Impedance measurements for 3-d printed liners
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.ORCID iD: 0000-0002-8474-8563
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics.
2019 (English)In: 25th AIAA/CEAS Aeroacoustics Conference, 2019, [publishername] American Institute of Aeronautics and Astronautics Inc, AIAA , 2019Conference paper, Published paper (Refereed)
Abstract [en]

The last twenty years have seen a great development in inverse techniques for the determination of liner impedance under grazing flow conditions, so called impedance eduction techniques. This paper contributes to a continuing effort to gain confidence in the results obtained, specifically in the dependence of the results on fabrication, data acquisition and analysis. It is part of the IFAR Acoustic Liner Challenge were data from multiple test rigs with similar liner configurations fabricated using 3D printing are gathered and compared. Experimental results are reported for two liner configurations obtained in KTH’s advanced impedance eduction flow rig.

Place, publisher, year, edition, pages
[publishername] American Institute of Aeronautics and Astronautics Inc, AIAA , 2019.
Keywords [en]
3D printers, Aeroacoustics, Data acquisition, 3-D printing, Acoustic liners, Grazing flows, Impedance eduction, Impedance measurement, Inverse techniques, Liner impedance, Multiple test, Acoustic impedance
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-268449DOI: 10.2514/6.2019-2600Scopus ID: 2-s2.0-85079470070ISBN: 9781624105883 (print)OAI: oai:DiVA.org:kth-268449DiVA, id: diva2:1426105
Conference
25th AIAA/CEAS Aeroacoustics Conference, 2019, 20 May 2019 through 23 May 2019
Note

QC 20200423

Available from: 2020-04-23 Created: 2020-04-23 Last updated: 2020-04-23Bibliographically approved

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Bodén, HansSack, Stefan

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