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Identification of signals in the context of acoustic emission in concrete

Abstract

The study presented in this paper is placed in the context of the frequency analysis of acoustic emission in concrete. The purpose is to study the ability to identify an acoustic emission event by deducing its spectrum from a detected signal. The identification is carried out progressively so as to separate the various functions involved in the acoustic emission process, and to approach the usual conditions of acoustic emission processing during fracture tests of concrete specimens. Impulses of different forms are generated on the surface of concrete test specimens, and the signals detected are analyzed. The identification of signals takes into account the frequency response of the transducers and the wave attenuation as function of the frequency.

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Berthelot, J.-., Souda, M.B. & Robert, J.L. Identification of signals in the context of acoustic emission in concrete. J Nondestruct Eval 13, 63–73 (1994). https://doi.org/10.1007/BF00730957

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Key words

  • Concrete
  • acoustic emission
  • fracture
  • damage