Delamination is a phenomenon which involves complex degradation of bot
h layers and inter-laminar connections. To take into account these deg
radations, the composite laminate is modeled at a meso scale as a stac
king of homogeneous layers connected by interfaces. Layers and interfa
ces may be damaged. Both onset of delamination and its propagation on
a short distance are predicted. Two applications are presented, the nu
merical simulations are compared with experimental results: (i) delami
nation in the vicinity of a straight edge of a specimen under tension
or compression, (ii) delamination near the hole of a perforated plate
under tension.