Two-sided multi-port techniques for characterisation of in-duct samples with non-linear acoustic properties
2013 (English)In: Acta Acoustica united with Acustica, ISSN 1610-1928, Vol. 99, no 3, 359-378 p.Article in journal (Refereed) Published
This paper discusses experimental techniques for obtaining the acoustic properties of in-duct samples with non-linear acoustic characteristics. The methods developed are intended for studies of non-linear energy transfer to higher harmonics for samples accessible from both side such as perforates or other material used as top sheets in aircraft engine liners and automotive mufflers. New double sided multi-port techniques, using sinusoidal excitation, for characterisation of samples with non-linear properties are developed and experimentally tested. The results of the experimental tests show that these new techniques can give results which are useful for understanding non-linear energy transfer to higher harmonics.
Place, publisher, year, edition, pages
2013. Vol. 99, no 3, 359-378 p.
Double sided, Experimental techniques, Experimental test, Higher harmonics, Multi-port, Non-linear acoustics, Nonlinear properties, Sinusoidal excitations, Aircraft engines, Automobile mufflers, Ducts, Energy transfer, Acoustic properties
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-134485DOI: 10.3813/AAA.918618ISI: 000319647100003ScopusID: 2-s2.0-84878273952OAI: oai:DiVA.org:kth-134485DiVA: diva2:667022
QC 201311252013-11-252013-11-252013-11-25Bibliographically approved