Abstract
Linearized inverse scattering method based on Born and Kirchhoff approximations is an approach whereby shape and location of defects are obtained together from ultrasonic backscattering waveforms. Here, capability of the algorithm to estimate geometrical properties of unknown defects is tested by the use of synthetic data for both volumetric defects and cracks. Numerical examples show that the method has versatility to estimate exact location as well as shape of defects provided rough location of defects is known.