Inversion of defects by linearized inverse scattering methods with measured waveforms

摘要

The linearized inverse scattering methods are investigated to reconstruct the shape of defects in the two-dimensional elastic body. The methods are based on the Born and Kirchhoff approximations for unknown displacements in the integral representation of the scattered field. To show the performance of the methods, the specimen that has the circular cavity with cracks is prepared and the backscattering data are measured. The measured waveforms are processed and fed into the inverse methods. The results show the capability of the methods to reconstruct the shape and size of defects.