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Reconstruction of Impact on Textile Composite Plate Using Piezoelectric Sensors

R. ZEMCIK, V. LAS, T. KROUPA, J. BARTOSEK

Abstract


The presented study focuses on structural health monitoring techniques with the future goal to predict induced damage and to assess the residual strength of impacted structure. Herein, the primary problem of impact force reconstruction is investigated on a square composite plate with nine attached piezoelectric sensors (foil patches) and shunt resistors. The plate is made from carbon textile using RTM technology. The patches are glued on the side with even surface in a symmetrical pattern. The plate is impacted on the same side. The reconstruction is based on deconvolution method and transfer functions. The efficiency of the proposed approach is tested for all impact locations used to calibrate the system, and also on several additional locations. The interpolation of transfer functions is used to increase the accuracy of the reconstruction.

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