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Localization of Ultrasound in Thick Composites

  • Yichi Lu
  • Jan D. Achenbach
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

The propagation of ultrasound in fiber-reinforced composites is controlled by the relative magnitudes of characteristic length variables. These length variables are the wavelength (Λ), the fiber diameter (a), the thicknesses of plies (h), and the overall thickness of the component (H). It may generally be assumed that Λ is much larger than the fiber diameter (a ~ 8 µm). On the other hand wavelengths of the order of thicknesses of plies (h ~ 100 µm), but smaller than the overall thickness of the component may well occur. In that range of wavelengths the propagation of ultrasonic waves gives rise to interesting multiple reflection phenomena which are the topic of this paper.

Keywords

Reflection Coefficient Fiber Diameter Transmission Coefficient Localization Length Localization Constant 
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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References

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    D. Sotiropoulos and J. D. Achenbach, J. Acoust. Soc. Am. 84, 752 (1988)CrossRefGoogle Scholar
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    P. Sheng, Z. Zhang, B. White and G. Papanicolaou, Phys. Rev. Lett. 57, 1000 (1986)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Yichi Lu
    • 1
  • Jan D. Achenbach
    • 1
  1. 1.Center for Quality Engineering and Failure PreventionNorthwestern UniversityEvanstonUSA

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