TY - GEN
T1 - Time-reversal methods for acousto-elastic equations and applications
AU - Assous, Franck
AU - Lin, Moshe
N1 - Publisher Copyright:
© 2017 International Center for Numerical Methods in Engineering. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Time reversal (TR) is a subject of very active research. The principle is to take advantage of the reversibility of wave propagation phenomena, for example in acoustics, elastic or electromagnetism in an unknown medium, to back-propagate signals to the sources that emitted them. In a previous paper [1], we introduced a time-reversed method for acoustic equation. In this paper, our aim is to extend this approach to elastodynamics equations. As the application we have in mind are concerned with ultrasound-based elasticity imaging methods, we consider both elastic and acousto-elastic systems of equations. We stress that our method does not rely on any a priori knowledge of the physical properties of the inclusion.
AB - Time reversal (TR) is a subject of very active research. The principle is to take advantage of the reversibility of wave propagation phenomena, for example in acoustics, elastic or electromagnetism in an unknown medium, to back-propagate signals to the sources that emitted them. In a previous paper [1], we introduced a time-reversed method for acoustic equation. In this paper, our aim is to extend this approach to elastodynamics equations. As the application we have in mind are concerned with ultrasound-based elasticity imaging methods, we consider both elastic and acousto-elastic systems of equations. We stress that our method does not rely on any a priori knowledge of the physical properties of the inclusion.
KW - Elastodynamics
KW - Finite element
KW - Inverse problems
KW - Time reverse
KW - Wave propagation
UR - http://www.scopus.com/inward/record.url?scp=85045344039&partnerID=8YFLogxK
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AN - SCOPUS:85045344039
T3 - Proceedings of the 7th International Conference on Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2017
SP - 972
EP - 980
BT - Proceedings of the 7th International Conference on Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2017
A2 - Papadrakakis, Manolis
A2 - Onate, Eugenio
A2 - Schrefler, Bernhard A.
T2 - 7th International Conference on Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2017
Y2 - 12 June 2017 through 14 June 2017
ER -