Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Quasi-two-dimensional transfer of elastic waves.

Nicolas P Trégourès1, Bart A van Tiggelen

  • 1Laboratoire de Physique et Modélisation des Milieux Condensés, CNRS/Université Joseph Fourier, Boîte Postale 166, 38042 Grenoble Cedex 09, France.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 9, 2002
PubMed
Summary

This study presents a new theory for elastic wave scattering in heterogeneous plates, detailing mode coupling and wave propagation. It enables analysis of phenomena like coherent backscattering near plate surfaces.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Observation of multifractality in Anderson localization of ultrasound.

Physical review letters·2009
Same author

Extracting the Green function from diffuse, equipartitioned waves.

Physical review. E, Statistical, nonlinear, and soft matter physics·2004
Same author

Light transport in chiral and magnetochiral random media.

Journal of the Optical Society of America. A, Optics, image science, and vision·2003
See all related articles

Area of Science:

  • Physics
  • Wave Propagation
  • Materials Science

Background:

  • Heterogeneous plates with free surfaces exhibit complex elastic wave behavior.
  • Understanding wave scattering and mode coupling is crucial for analyzing wave propagation in such structures.

Purpose of the Study:

  • To develop a theoretical framework for multiple scattering of elastic waves in a heterogeneous plate.
  • To describe the coupling of eigenmodes (Rayleigh, shear horizontal, Lamb waves) within the plate.
  • To investigate coherent backscattering phenomena near the plate surface.

Main Methods:

  • Derivation of a time-dependent, quasi-two-dimensional radiative transfer equation.
  • Treatment of traction-free boundary conditions at the wave equation level.
  • Analysis of mode-coupling rates and mode lifetimes.

Related Experiment Videos

  • Application of the diffusion approximation for large lapse times.

    • Main Results:

    • Expressions relating small-scale fluctuations to mode lifetimes and coupling rates.
    • A model that accounts for elastic transfer over macroscopic horizontal distances.
    • The diffusion approximation simplifies the model for later time scales.

    Conclusions:

    • The developed theory accurately describes elastic wave scattering and mode coupling in heterogeneous plates.
    • The model provides a foundation for studying phenomena like coherent backscattering.
    • The diffusion approximation offers a simplified approach for analyzing wave propagation at later times.