Abstract
The article investigates the Lamb wave generation by the surface bonded circular actuator and wave propagation within the orthotropic Carbon Fiber Reinforced Plastic (CFRP) plate considering the anisotropy of the material elastic and damping properties. The first part of our investigation includes experimental determination of the elastic properties of CFRP, the wave attenuation, determination of the waves type that can be excited in the studied CFRP panel using a given frequency range. The model of anisotropic material damping has been proposed, which was further used in the Finite Element (FE) implementation of transient wave generation, propagation and attenuation that is present in the second part of the reported study. The proposed results can be used at the design of SHM for the composite structures with the structural anisotropy and damping, and for making a reasonable choice of the frequency and amplitude of excitation to provide the desired propagation distance and orientation of generated waves.
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