Measurement of the Transmission Loss of Thin Panels Using the Two-Load Impedance Tube Method

Xin Yan, David Herrin, Nikhil Ghaisas

Research output: Contribution to journalConference articlepeer-review


The two-load method is used to measure the transmission loss of thin panels in two different sized impedance tubes (3.49 cm and 10.16 cm). Samples were initially tested with a clamped boundary condition. This was followed by tests with an elastomer inserted between the tube and tested sample to adjust the boundary condition at the periphery. In all tests performed, the influence of the sample holding method could not be removed from the test. The measured transmission loss was compared to finite element simulation with good agreement for both impedance tubes. Additionally, the effect of a compliant boundary condition along the periphery of the sample was also validated via simulation.

Original languageEnglish
JournalSAE Technical Papers
Issue number2021
StatePublished - Aug 31 2021
EventSAE 2021 Noise and Vibration Conference and Exhibition, NVC 2021 - Virtual, Online, United States
Duration: Sep 7 2021Sep 10 2021

Bibliographical note

Publisher Copyright:
© 2021 SAE International. All Rights Reserved.

ASJC Scopus subject areas

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


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