|
Piezoceramic transducers are extensively used in nondestructive testing (NDT),
structural health monitoring (SHM) and condition monitoring (CM) of various mechanical
systems including wind turbines, aircraft structures, bridges and pipeline systems.
Piezoelectric transducers are surface bonded on the host structure and are excited to produce
structural responses. This article highlights the effect of the adhesive layer between the
studied structure and the transducer on the contact characteristics and the structural wave
fields. The research also focuses on the efficiency of the both methods used for calculation of
the occuring wave fields: finite-element (FE) method and semi-analytical approach based on
the Green's matrix representations and the Fourier transform.
Keywords: anisotropic infinite layer, Green's matrix, piezoelectric actuator, wave excitation, finite element model, Fourier transform |
full paper (pdf, 1072 Kb)