Reconstruction of Impact Force on Curved Panel using Piezoelectric Sensors

This paper is focused on reconstruction of impact force in an unknown location on a general thin-walled curved structure with a hole. Ten irregularly distributed piezoelectric sensors are attached to the panel for the measurement of response signals. A corresponding finite element model is created in MSC.Marc. The methodology for reconstruction is based on the transfer function approach. The time dependence of impact force is reconstructed and the location of impact is identified on a different coarse mesh and it is compared to the solution on the original mesh for all possible impact locations. Moreover, the influence of interpolation of the transfer functions within elements (or sectors) of the coarse mesh on increase of the accuracy of impact location identification is investigated.