1. LaMSID, UMR CNRS-EDF 2832, 92141 Clamart, France
2. RJG Consulting, 44 Bd Voltaire, F-75011 Paris, France
3. Department of Analysis in Mechanics and Acoustics, EDF R&D, F-92141 Clamart, France
4. Department of Materials and Mechanics of Components, EDF R&D, F-77818 Moret-sur-Loing, France