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Determination of rigid inclusions immersed in an isotropic elastic body from boundary measurement. (English) Zbl 1527.35189

Summary: We study the determination of some rigid inclusions immersed in an isotropic elastic medium from overdetermined boundary data. We propose an accurate approach based on the topological sensitivity technique and the reciprocity gap concept. We derive a higher-order asymptotic formula, connecting the known boundary data and the unknown inclusion parameters. The obtained formula is interesting and useful tool for developing accurate and robust numerical algorithms in geometric inverse problems.

MSC:

35N25 Overdetermined boundary value problems for PDEs and systems of PDEs
35J57 Boundary value problems for second-order elliptic systems
35R30 Inverse problems for PDEs
35Q74 PDEs in connection with mechanics of deformable solids
49K40 Sensitivity, stability, well-posedness

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