Abstract

Lisa Simulations of Time Reversedultrasonic Experiments

M.Scalerandi, P.P.Delsanto (INFM - Phys. Dept., Politecnico di Torino, Torino, Italy); P.A.Johnson, J.TenCate (Nonlinear Elasticity Group, Los Alamos National Lab, USA)

e-mail: scalerandi@polito.it

Several experiments in the last decade have demonstrated the enormous potential of Time Reversed Acoustics (TRA) and Ultrasonics (TRUS) for applications in many fields, such as medicine, materials characterization and oceanography. However, the influence of mode-conversion in solids on the efficiency of TRUS has still to be understood. In the present contribution, we demonstrate the applicability of the Local Interaction Simulation Approach to simulate, by means of virtual experiments, both linear and non linear TRUS and to reproduce all the relevant features of this technique (both for focusing of elastic energy and defects localization). Also, well show the potential of numerical simulations for the optimization of experimental procedures.

Section : 10