1. Arts et Métiers ParisTech; 2 Boulevard du Ronceray, BP 93525 F-49035 Angers cedex 01 France
2. Aragón Institute of Engineering Research ( I 3 A ); Universidad de Zaragoza; Edificio Betancourt, María de Luna, s.n. 50018 Zaragoza Spain
3. EADS Corporate Foundation International Chair; École Centrale de Nantes; 1, Rue de la Noë 44300 Nantes France