Lamb Wave Interaction with Delaminations in CFRP Laminates

In this paper, we investigate Lamb wave in- teraction with delamination in an infinite carbon fiber re- inforced plastics (CFRP) laminate by a hybrid method. The infinite CFRP laminate is divided into an exterior zone and an interior zone. In the exterior zone, the wave fields are expressed by wave mode expansion. In the interior zone, the wave fields are modeled by the finite element method (FEM). Considering the continuity con- dition at the boundary between the exterior and interior zones, the global wave fields can be calculated. Lastly, numerical examples show how a delamination in the lam- inate influences the mode conversion of different incident wave modes.