• Malinowski, Paweł
• Tomaszewicz, Paweł
• Borowik, Grzegorz
• Łuba, Tadeusz
• Ostachowicz, Wiesław
• Wandowski, Tomasz
• Rawski, Mariusz

Abstract

In this paper embedded signal processing subsystem is presented. Developed subsystem is a part of whole Structural Health Monitoring System (SHM) that is at the development stage. SHM system performs such a tasks as: elastic wave generation and sensing, signals acquisition and signal processing. The aim of developed signal processing subsystem is damage localization based on elastic wave propagation signals registered in the interrogated structure. Embedded signal processing subsystem is realized on Field Programmable Gale Array (FPGA). In FPGA system on programmable chip (SoPC) and damage localization algorithm are implemented. The aim of this algorithm is to create damage map which presents places in the structure where elastic wave reflections occur. Elastic waves are generated and received using prototype of electronic system developed especially in this purpose. Piezoelectric transducers are arranged as a networks with different geometrical configurations. Investigated structure is simple isotropic panel made out of aluminum alby. In this research damage is simulated as a notch and drilled hole. In damage localization process fundamental antisymmetric Ao mode is ułilized. Finally, results of experimental verifications of developed damage localization algorithm and embedded subsystem are presented in this paper.

Topics

• impedance spectroscopy
• aluminium
• isotropic