We numerically implement the variational approach for reconstruction in the inverse crack and cavity problems developed by one of the authors. The method is based on a suitably adapted free-discontinuity problem. Its main features are the use of phase-field functions to describe the defects to be reconstructed and the use of perimeter-like penalizations to regularize the ill-posed problem. The numerical implementation is based on the solution of the corresponding optimality system by a gradient method. Numerical simulations are presented to show the validity of the method.
Cite this article
Wolfgang Ring, Luca Rondi, Reconstruction of cracks and material losses by perimeter-like penalizations and phase-field methods: numerical results. Interfaces Free Bound. 13 (2011), no. 3, pp. 353–371DOI 10.4171/IFB/262