Publication: On the identification of the nonlineari...
Master data
Title: | On the identification of the nonlinearity parameter in the Westervelt equation from boundary measurements |
Subtitle: | |
Abstract: | We consider an undetermined coefficient inverse problem for a nonlinear partial differential equation occurring in high intensity ultrasound propagation as used in acoustic tomography. In particular, we investigate the recovery of the nonlinearity coefficient commonly labeled as B/A in the literature which is part of a space dependent coefficient \kappa in the Westervelt equation governing nonlinear acoustics. Corresponding to the typical measurement setup, the overposed data consists of time trace measurements on some zero or one dimensional set \Sigma representing the receiving transducer array. After an analysis of the map from \kappa to the overposed data, we show injectivity of its linearisation and use this as motivation for several iterative schemes to recover \kappa. Numerical simulations will also be shown to illustrate the efficiency of the methods. |
Keywords: | coefficient identification, Westervelt equation, ultrasound imaging, nonlinearity parameter, nonlinear acoustics |
Publication type: | Article in journal (Authorship) |
Publication date: | 01.10.2021 (Online) |
Published by: |
Inverse Problems and Imaging (IPI)
Inverse Problems and Imaging (IPI)
(
American Institute of Mathematical Sciences (AIMS);
)
to publication |
Title of the series: | - |
Volume number: | 15 |
Issue: | 5 |
First publication: | Yes |
Version: | - |
Page: | - |
Total number of pages: | 865 pp. |
Versionen
Keine Version vorhanden |
Publication date: | 01.10.2021 |
ISBN: | - |
ISSN: | 1930-8345 |
Homepage: | - |
Publication date: | 01.10.2021 |
ISBN (e-book): | - |
eISSN: | - |
DOI: | http://dx.doi.org/10.3934/ipi.2021020 |
Homepage: | - |
Open access |
|
Authors
Barbara Kaltenbacher (internal) | ||||||
William Rundell
|
Assignment
Organisation | Address | ||||
---|---|---|---|---|---|
Fakultät für Technische Wissenschaften
Institut für Mathematik
|
AT - 9020 Klagenfurt am Wörthersee |
Categorisation
Subject areas | |
Research Cluster | No research Research Cluster selected |
Citation index |
Information about the citation index: Master Journal List
|
Peer reviewed |
|
Publication focus |
Classification raster of the assigned organisational units:
|
working groups | No working group selected |
Cooperations
Organisation | Address | ||
---|---|---|---|
Texas A&M University
|
US - TX 77843 College Station |
Research activities
Projects: |
|
Publications: | No related publications |
Events: | No related events |
Lectures: | No related lectures |