Application of micro-perforated panels to attenuate noise in a duct

J. Liu, D. W. Herrin, A. F. Seybert

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations


The sound attenuation performance of microperforated panels (MPP) with adjoining air cavity is demonstrated. First of all, simulated results are shown based upon Maa's work investigating the parameters which impact MPP performance [1]. It is shown that the most important parameter is the depth of the adjoining cavity. Following this, an experimental study was undertaken to compare the performance of an MPP to that of standard foam. Following this, two strategies to improve the MPP performance are implemented. These include partitioning the air cavity and having a cavity with varying depth. Both strategies show a marked improvement in MPP attenuation.

Original languageEnglish
JournalSAE Technical Papers
StatePublished - 2007
EventNoise and Vibration Conference and Exhibition - St. Charles, IL, United States
Duration: May 15 2007May 17 2007

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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