Advertisement

Effect of Bottom-Surface Reflections on Backscatter from Porosity in a Composite Layer

  • T. Ohyoshi
  • J. D. Achenbach

Abstract

Polar backscattering from a fiber-reinforced composite which contains regions of porosity, has been investigated in a number of papers [1]–[7]. Several scattering mechanisms appear to contribute to the backscattered signal. Roughly speaking the components of the backscattered signal can be attributed to effects of finite beam width, to the structuring of the material and to the existence of porosity.

Keywords

Wave Motion Backscatter Signal Transversely Isotropic Material Energy Flux Vector Backscatter Field 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    D. K. Hsu and S. M. Nair, in Review of Progress in Quantitative NDE, edited by D. O. Thompson and D. E. Chimenti (Plenum Press, New York, 1986), Vol. 6B, pp. 1185–1193.Google Scholar
  2. 2.
    R. A. Roberts, in Review of Progress in Quantitative NDE, edited by D. O. Thompson and D. E. Chimenti (Plenum Press, New York, 1986), Vol. 6B, pp. 1147–1156.Google Scholar
  3. 3.
    D. E. Yuhas, C. L. Vorres and R. A. Roberts, in Review of Progress in Quantitative NDE, 1986, edited by D. O. Thompson and D. E. Chimenti (Plenum Press, New York), Vol. 5B, p. 1275.Google Scholar
  4. 4.
    J. Qu and J. D. Achenbach, in Review of Progress in Quantitative NDE, edited by D. O. Thompson and D. E. Chimenti (Plenum Press, New York), Vol. 6B, pp. 1137–1146.Google Scholar
  5. 5.
    Y. Bar-Cohen and R. L. Crane, Material Evaluation, 40, 970–975 (1982).Google Scholar
  6. 6.
    E. D. Blodgett, L. J. Thomas III and J. G. Miller, in Review of Progress in Quantitative NDE, edited by D. O. Thompson and D. E. Chimenti (Plenum Press, New York, 1986), Vol. 5B, p. 1267.Google Scholar
  7. 7.
    J. Qu and J. D. Achenbach, in Review of Progress in Quantitative NDE, edited by D. O. Thompson and D. E. Chimenti (Plenum Press, New York), Vol. 7.Google Scholar
  8. 8.
    B. A. Auld, WAVE MOTION 1, 1979, pp. 3–5.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • T. Ohyoshi
    • 1
  • J. D. Achenbach
    • 2
  1. 1.Department of Mechanical EngineeringAkita UniversityAkitaJapan
  2. 2.The Technological InstituteNorthwestern UniversityEvanstonUSA

Personalised recommendations