Measuring acoustic source impedance using wave decomposition

J. Liu, D. W. Herrin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents an incident wave decomposition method for measuring source impedance and source strength. This simplified method has the advantage of being purely based on acoustic instead of equivalent circuit concepts. It is suggested that the developed method is more intuitive than equivalent circuit methods like the two-load method. The incident wave decomposition method is validated theoretically and experimentally. Finally, the source impedance of an engine intake system is measured and used to predict the sound pressure outside the duct.

Original languageEnglish
Title of host publicationIMAC-XXVII
Subtitle of host publicationConference and Exposition on Structural Dynamics - Model Verification and Validation
StatePublished - 2009
Event27th Conference and Exposition on Structural Dynamics 2009, IMAC XXVII - Orlando, FL, United States
Duration: Feb 9 2009Feb 12 2009

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference27th Conference and Exposition on Structural Dynamics 2009, IMAC XXVII
Country/TerritoryUnited States
CityOrlando, FL
Period2/9/092/12/09

ASJC Scopus subject areas

  • Engineering (all)
  • Computational Mechanics
  • Mechanical Engineering

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