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Investigation of damage mechanisms of composite materials: Multivariable analysis based on temporal and wavelet features extracted from acoustic emission signals

  • L. HaumesserEmail author
  • J. Fortineau
  • D. Parenthoine
  • T. Goursolle
  • F. Vander Meulen
Part of the Springer Proceedings in Physics book series (SPPHY, volume 128)

Abstract

Identification methods of nonlinear parameters are developed to characterize solid materials and soft tissues. In the frame of classical parametric interaction methods, the parameter evaluation is based on the measurement of quantities related to the acoustic wave propagation medium. They appear at frequencies combinations and/or multiple harmonic of primary wave frequencies, and are generally weak in comparison to the amplitudes of the sources. Hence, the use of experimental devices excited at high amplitude levels is required. One problem in the identification of nonlinear parameters is that the ultrasonic device itself is not exempt of nonlinearity. Generally speaking the problem is to ensure, for each specific configuration, that the involved instrumentation (waveform generator, voltage amplifier, transducer), the coupling medium, mutual interactions between many sources… do not perturb the evaluation of the investigated nonlinear effects.

Keywords

Rayleigh Wave Second Harmonic Generation Lamb Wave Harmonic Distortion Waveform Generator 
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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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • L. Haumesser
    • 1
    Email author
  • J. Fortineau
    • 1
  • D. Parenthoine
    • 1
  • T. Goursolle
    • 1
  • F. Vander Meulen
    • 1
  1. 1.Ecole Nationale d’Ingénieurs du Val de LoireUniversité François Rabelais de Tours, LUSSI CNRS ERL 3106 / INSERM U930Blois CedexFrance

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