, Volume 4, Issue 2, pp 58–61 | Cite as

Photoacoustic Assembly Line Leak Testing

  • Serdar H. Yönak
  • David R. Dowling
  • David P. Gravel
Measurement and Testing


Unintended leaks in pressurized components and systems, such as engine blocks, radiators, A/C components, fuel systems, torque converters and transmission housings, may be detrimental to consumers, manufacturers and the environment. Quick and reliable leak detection and localization are critical manufacturing quality-control processes for these products. This article presents a method for leak detection and localization based on photoacoustic sounds.


Side Lobe Sulphur Hexafluoride Leak Detection Photoacoustic Signal Torque Converter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. [1]
    Yönak, S.H. and Dowling, D.R. (1999) “Photoacoustic detection and localization of small gas leaks,” J. Acoust. Soc. Am., Vol. 105, 2685–2694.Google Scholar
  2. [2]
    Yönak, S.H. and Dowling, D.R. (2001) “Multiple microphone photoacoustic leak detection,” US Patent No. 6,227,036.Google Scholar
  3. [3]
    Yönak, S.H. and Dowling, D.R. (2002) “Parametric dependencies for photoacoustic leak localization,” J. Acoust. Soc. Am. 112, 145–155.Google Scholar
  4. [4]
    Yönak, S.H. and Dowling, D.R. (2003) “Gas-phase generation of photoacoustic sound in an open environment,” J. Acoust. Soc. Am. 114, 3167–3178Google Scholar
  5. [5]
    Huang, E., Dowling, D. R., Whelan, T., and Spiesberger, J. L. (2003) “High sensitivity photoacoustic leak testing,” J. Acoust. Soc. Am. 114, 1926–1933.Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden GmbH 2004

Authors and Affiliations

  • Serdar H. Yönak
  • David R. Dowling
    • 1
  • David P. Gravel
  1. 1.University of MichiganAnn ArborUSA

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