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On the simultaneous inversion of micro-perforated panels' parameters: application to single and double air-cavity backed systems

  • University of Bristol
    ,
  • Université de Ngaoundéré
    ,
  • Université du Havre
Research Output: Contribution to journal Article Peer-review

Abstract

This study deals with the deduction of parameters of Micro-Perforated Panel (MPP) systems from impedance tube data. It is shown that there is an ambiguity problem that exists between the MPP thickness and its open area ratio. This problem makes it difficult to invert the reflection coefficient data fitting and therefore to deduct the MPP parameters. A technique is proposed to reduce this ambiguity by using an equation that links the hole diameter to the open area ratio. Reflection coefficient data obtained for two specimens with different characteristics is employed for searching the MPP parameters using a simulated annealing algorithm. The results obtained demonstrate the effectiveness of this technique.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 2279-2288

Journal (Volume, Issue Number)

Journal of the Acoustical Society of America (Volume 143, Issue 4)

Publication milestones

  • Accepted/In press - 01/04/2018
  • Published - 20/04/2018

Publication status

Published - 20/04/2018

ISSN

0001-4966

External Publication IDs

  • handle.net: 10547/624695
  • Scopus: 85045917560

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