Time reversal methods in acousto-elastodynamics

Franck Assous; Moshe Lin

Time reversal methods in acousto-elastodynamics

Franck Assous, Moshe Lin

Ariel University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The aim of the article is to solve an inverse problem in order to determine the presence and some properties of an elastic “inclusion” (an unknown object, characterized by elastic properties discriminant from the surrounding medium) from partial observations of acoustic waves, scattered by the inclusion. The method will require developing techniques based on Time Reversal methods. A finite element method based on variational acousto-elastodynamics formulation will be derived and used to solve to solve the forward, and then, the time reversed problem. A criterion, derived from the reverse time migration framework, is introduced, to help use to construct images of the inclusions to be determined. Our approach will be applied to configurations modeling breast cancer detection, using simulated ultrasound waves.

Original language	English
Title of host publication	8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019
Editors	Eugenio Onate, Manolis Papadrakakis, Bernhard A. Schrefler
Publisher	International Center for Numerical Methods in Engineering
Pages	743-750
Number of pages	8
ISBN (Electronic)	9788494919459
State	Published - 2021
Externally published	Yes
Event	8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019 - Barcelona, Spain Duration: 3 Jun 2019 → 5 Jun 2019

Publication series

Name	8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019

Conference

Conference	8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019
Country/Territory	Spain
City	Barcelona
Period	3/06/19 → 5/06/19

Bibliographical note

Publisher Copyright:
Copyright © The Authors.

Keywords

Elastic waves
Elastodynamics
Finite element
Inverse problems
Time reversal
Wave propagation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

Assous, F., & Lin, M. (2021). Time reversal methods in acousto-elastodynamics. In E. Onate, M. Papadrakakis, & B. A. Schrefler (Eds.), 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019 (pp. 743-750). (8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019). International Center for Numerical Methods in Engineering.

Assous, Franck ; Lin, Moshe. / Time reversal methods in acousto-elastodynamics. 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019. editor / Eugenio Onate ; Manolis Papadrakakis ; Bernhard A. Schrefler. International Center for Numerical Methods in Engineering, 2021. pp. 743-750 (8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019).

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title = "Time reversal methods in acousto-elastodynamics",

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keywords = "Elastic waves, Elastodynamics, Finite element, Inverse problems, Time reversal, Wave propagation",

author = "Franck Assous and Moshe Lin",

note = "Publisher Copyright: Copyright {\textcopyright} The Authors.; 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019 ; Conference date: 03-06-2019 Through 05-06-2019",

year = "2021",

language = "אנגלית",

series = "8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019",

publisher = "International Center for Numerical Methods in Engineering",

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Assous, F & Lin, M 2021, Time reversal methods in acousto-elastodynamics. in E Onate, M Papadrakakis & BA Schrefler (eds), 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019. 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019, International Center for Numerical Methods in Engineering, pp. 743-750, 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019, Barcelona, Spain, 3/06/19.

Time reversal methods in acousto-elastodynamics. / Assous, Franck; Lin, Moshe.
8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019. ed. / Eugenio Onate; Manolis Papadrakakis; Bernhard A. Schrefler. International Center for Numerical Methods in Engineering, 2021. p. 743-750 (8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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KW - Elastic waves

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KW - Finite element

KW - Inverse problems

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KW - Wave propagation

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Assous F, Lin M. Time reversal methods in acousto-elastodynamics. In Onate E, Papadrakakis M, Schrefler BA, editors, 8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019. International Center for Numerical Methods in Engineering. 2021. p. 743-750. (8th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2019).

Time reversal methods in acousto-elastodynamics

Abstract

Publication series

Conference

Bibliographical note

Keywords

UN SDGs

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