Research on impact localization method based on passive tomography of piezoelectric sensors

Abstract Impact monitoring of plate structures has always been a hot spot in structural health research. In order to improve the accuracy impact monitoring, this paper proposes beam-focusing localization algorithm based on passive tomography using sensor arrangement method ring array. The damage large-sized different directions is performed by each linear array and distribution maps corresponding arrays are generated. obtained experimentally assign weights achieve image reconstruction damage. experimental results show that can more accurate visualization location, reconstructed laminar well reflect location information. It be used for extended monitoring.