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Updated: Jul 7, 2026
11:03
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Forward ultrasonic scattering from multidimensional solid or fluid inclusions buried in multilayered elastic
E J Ayme-Bellegarda1, T M Habashy, H W Chang
1Schlumberger-Doll Res., Ridgefield, CT.
Summary
This study presents a new method for analyzing elastic wave scattering from objects in layered materials using integral equations and Born approximation. The approach accurately models complex wave behaviors like cross-polarization and multiple reflections.
Area of Science:
- Acoustics and Wave Physics
- Materials Science
- Computational Mechanics
Background:
- Studying elastic wave scattering is crucial for non-destructive testing and material characterization.
- Existing models often simplify complex layered media and wave interactions.
Purpose of the Study:
- To develop a robust framework for analyzing elastic wave scattering from buried objects in multilayered media.
- To provide a closed-form expression for the scattered field applicable to inhomogeneous backgrounds.
Main Methods:
- Integral equation formalism for elastic scattering.
- Application of Born approximation for inhomogeneous background media.
- Inclusion of compressional and shear wave propagation, cross-polarization, and multiple reflections.
Main Results:
- A closed-form expression for the scattered elastic field was derived.
- The method accurately computes scattered fields considering complex wave phenomena.
- Validation performed under challenging conditions with high material property contrasts.
Conclusions:
- The developed framework offers a powerful tool for modeling elastic wave scattering in complex layered environments.
- The approach is validated for scenarios with significant material property variations.
- This work advances the understanding of ultrasonic wave interactions with buried structures.
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