Abstract

A method is proposed for imaging of scattering heterogeneities in continuous media on the basis of numerical modeling of forward and backward wave propagation. It is shown that the combination of a solution for backward propagation of waves and direct wave propagation allows us to visualize scattering heterogeneities. The results of numerical simulation are presented.

Highlights

  • Acoustic tomography is widely used in flaw detection

  • Most of the existing methods of ultrasonic tomography use the locational principle of sounding [1, 2], in which objects are visualized by back scattered waves

  • We propose a method for solving the inverse problem of acoustic tomography based on numerical simulation of the propagation of acoustic waves in solids

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Summary

Introduction

It is necessary to solve the inverse problem – determine its shape and characteristics of object by means of the measured signal scattered by heterogeneity. Most of the existing methods of ultrasonic tomography use the locational principle of sounding [1, 2], in which objects are visualized by back scattered waves. There are particular cases of sounding schemes where rapid processing of signals and obtaining of three-dimensional images is possible, for example, the Stolt method.

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