Numerical assessment of induced damages of RC frames using PZT patch in embedded configurations with and without bond layer

In the present times, health monitoring is playing a key role in assessing the damages occurred in the civil structures. The current study deals with estimating damages induced to a reinforced concrete (RC) frame using ceramic piezoelectric Lead zirconate titanate (PZT) patches in embedded forms. Coupled field analysis on finite element models have been performed for acquiring the electro-mechanical impedance (EMI) response of structure in transducer excitation frequency range of 100-200 kHz. Two-fold study have been carried out to numerically analyze the performance of damage monitoring system with increasing crack depths that are induced at critical locations in the presence and absence of adhesive bond layer between PZT patch and surrounding concrete. Regression models based on root mean square deviation of EMI signatures have been proposed to estimate the severity of damages in RC frames.