Lamb wave propagation simulation in smart composite structures
نویسندگان
چکیده
Abaqus/Standard simulation of Lamb waves in smart composite plates is investigated for detecting delamination type damage. Composite plates typical of aerospace structures are used and a PZT actuator is surface bonded to excite Lamb waves. Abaqus model of composite plate uses layered solid elements. Piezoelectric (PZT-5H) actuator is modeled using piezoelectric elements that have both displacement and electric potential degrees of freedom. Perfect bonding between composite plate and PZT actuator is assumed. Simulation results obtained with appropriate level of structural damping are correlated with experimental measurements. The effect of delamination size on the structural response is studied. It is shown that the size and the location of delamination can be quantified using Lamb wave measurements.
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