Acoustic wave propagation and source localization in a 3D heterogeneous structure: A numerical study

Shenxin Yin, Zhiwen Cui, Tribikram Kundu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Acoustic source localization (ASL) technique is an important step for structural health monitoring (SHM). ASL in three dimensional (3D) structures is more challenging. The 3D acoustic source localization technology not only has important significance for the non-destructive monitoring of large-scale 3D structures, but also is indispensable for the spatial sound source localization problems. More unknown parameters, large number of sensors, limited known properties of the 3D structure and complex nonlinear equations greatly hinder the application and development of 3D acoustic source localization. Besides, when the acoustic signal propagates through different media in a 3D heterogeneous structure, it is refracted at the interfaces following Snell's law which makes the ASL in heterogeneous structures even more difficult. In this paper, the basic theoretical research on the acoustic source localization in 3D heterogeneous structures is carried out considering the refraction effect. A localization technique is first proposed based on the triangular pyramid sensor cluster using only the time difference of arrival (TDOA) and the location information of clusters. This technique can predict the velocity and acoustic source location with a relatively small number of sensors. A 3D finite element based numerical model of a heterogeneous structure made of two materials was analyzed to verify the proposed acoustic source localization technique. The results show the reliability of the proposed technique.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems IX
EditorsPaul Fromme, Zhongqing Su
ISBN (Electronic)9781510635395
StatePublished - 2020
EventHealth Monitoring of Structural and Biological Systems IX 2020 - None, United States
Duration: Apr 27 2020May 8 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceHealth Monitoring of Structural and Biological Systems IX 2020
Country/TerritoryUnited States


  • 3D heterogeneous structure
  • Acoustic source localization
  • Numerical simulation
  • Time difference of arrival

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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