The debonding of a thin film, glued to a rigid substratum by a soft adhesive, is known to proceed through the development of a regular array of micro-cavities. We propose a simple model of this phenomenon in the framework of the classical linear fracture mechanics. To cite this article: K.C. Le, L. Truskinovsky, C. R. Mecanique 336 (2008). © 2007 Académie des sciences. Published by Elsevier Mas...