In-service health monitoring of composite structures using Lamb waves

Real-time health monitoring of composite and metal structures has attracted considerable attention over the past years. Lamb waves were first described by Horace Lamb for homogeneous isotropic material. They are elastic waves that can be generated in a solid plate with free boundaries and are also known as plate waves. They can be divided in symmetric (Sn) and anti-symmetric (An) modes according to their displacement pattern.

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