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Numerical Modeling of Elastic Wave Propagation in Random Particulate Composites

  • Frank Schubert
  • Bernd Koehler

Abstract

Elastic wave propagation in a random particulate composite is a very complex phenomenon. In such a material, the application of ultrasonic nondestructive testing methods is difficult due to the multiple scattering processes, the strong backscattering from the aggregates, the frequency dependent attenuation and dispersion of the coherent wave fields and the mode conversions between pressure, shear and Rayleigh waves. Therefore, the interpretation of the received signals is complicated and the signal to noise ratio is low. In order to improve the applicability of pulse-echo and impact-echo testing methods and to optimize inverse reconstruction techniques, it is necessary to study the process of wave propagation systematically.

Keywords

Rayleigh Wave Concrete Model Elastic Wave Propagation Head Wave Elliptical Cavity 
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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Reference

  1. 1.
    V.K. Varadan, Y. Ma, and V.V. Varadan, A multiple scattering theory for elastic wave propagation in discrete random media, J. Acoust. Soc. Am. 77: 375–385 (1985).CrossRefGoogle Scholar
  2. 2.
    J.-H. Kim, J.-G. Ih, and B.-H. Lee, Dispersion of elastic waves in random particulate composites, J. Acoust. Soc. Am. 97 (3): 1380–1388 (1995).CrossRefGoogle Scholar
  3. 3.
    V.K. Kinra, E. Ker, and S.K. Datta, Influence of particle resonances on wave propagation in a random particulate composite, Mech. Res. Commun. 9: 109–114 (1982).CrossRefGoogle Scholar
  4. 4.
    P. Fellinger, R. Marklein, K. J. Langenberg, and S. Klaholz, Numerical modeling of elastic wave propagation and scattering with EFIT — elastodynamic finite integration technique, Wave Motion 21: 47–66 (1995).CrossRefGoogle Scholar
  5. 5.
    W. Sachse and K.Y. Kim, Point source / point receiver materials testing, Rev. Progr. Quant. NDE 6A: 311–320 (1987).Google Scholar
  6. 6.
    F. Schubert and B. Köhler, Numerical Modeling of Ultrasonic Attenuation and Dispersion in Concrete — The Effect of Aggregates and Porosity, Proceedings of the International ConferenceNon-Destructive Testing in Civil Engineering’, Liverpool, 143-157 (1997).Google Scholar
  7. 7.
    V.K. Kinra, Dispersive wave propagation in random particulate composites, Recent Advances in Composites in the U.S. and Japan, ASTM STP 864: 309–325 (1985).CrossRefGoogle Scholar
  8. 8.
    Y.H. Kim, S. Lee, and H.C. Kim, Attenuation and dispersion of elastic waves in multiphase materials, J. Phys. D: Appl. Phys. 24: 1722–1728 (1991).CrossRefGoogle Scholar
  9. 9.
    E.N. Landis and S.P. Shah, Frequency-dependent stress wave attenuation in cement-based materials, J. Engineer. Mech. 121 (6): 737–743 (1995).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Frank Schubert
    • 1
  • Bernd Koehler
    • 1
  1. 1.Branch Lab Dresden (EADQ)Fraunhofer-Institute Non-Destructive Testing (IzfP)DresdenGermany

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