Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

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A New Method for Acoustic Leak Detection at Complicated Geometrical Structures

Hessel, G.; Schmitt, W.; Weiß, F.-P.


A method for detecting and localizing leaks at complicated three-dimensional topologies by measuring the leak induced structure-borne and airborne sound and by applying pattern recognition procedures is being developed. The sound patterns necessary to train fuzzy logic classifiers and neural networks are generated with simulated leaks at the original structure. As features for characterizing the occurrence and the location of a leak, coherence values between high-frequency microphone signals and RMS-values of acoustic emission sensors are used. The method is even applicable when localization based on propagation time differences or sound attenuation differences fail. The method is prototypically developed for a soviet-type pressurized VVER-reactor.

  • Contribution to proceedings
    IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes SAFEPROCESS'94, June 13-16, 1994, Helsinki, Finland, Vol. 1, pp. 153 - 158


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