On a shape identification problem
Keywords:shape identification problem, inverse method, genetic algorithm, quasiNewton method, elastic air-filled hollow body, acoustical signature of the scatterer
An inverse method using a genetic algorithm and a quasi-Newton method is presented in this paper. We consider the problem of identifying a finite elastic airfilled hollow body of unknown shape embedded in a compressible, inviscid homogeneous fluid, based on the concept of time reversal invariance. A nonlinear model describes the acoustical signature of the scatterer. Numerical simulation is carried out for several examples to illustrate the efficiency of the method.
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