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Lamb wave interaction with delaminations in CFRP laminates. (English) Zbl 1181.74125

Summary: We investigate Lamb wave interaction with delamination in an infinite carbon fiber reinforced 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 condition 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 laminate influences the mode conversion of different incident wave modes.

MSC:

74R99 Fracture and damage
74J20 Wave scattering in solid mechanics
74E30 Composite and mixture properties
74S05 Finite element methods applied to problems in solid mechanics
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