Structural Health Monitoring on RCC Slab by Use of Piezoelectric Material
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 5
Abstract
Piezoelectric lead zirconate titanate (PZT) is being gradually applied into practice as a new intelligent material for structural health monitoring. In order to study the damage detection properties of PZT on concrete slabs, simply supported reinforced concrete slabs with piezoelectric patches attached to their surfaces were chosen as the research objects and the Electromechanical Impedance method (EMI) was adopted for research. Healthy and damage condition were designed to test the impedance values at different frequency bands. Frequency band is 50Khz to 300Khz in step 200. Consistent graphs are found by admittance vs frequency. The root mean square deviation (RMSD) damage indices are capable of detecting the structural damage. The newly proposed damage index Ry/Rx can also predict the changes well. The numerical and experimental studies verify that the Electromechanical Impedance method can accurately predict changes in the amount of damage in reinforced concrete slabs. The damage index changes regularly with the distance of damages to the sensor. This relationship can be used to determine the damage location. The newly proposed damage index Ry/Rx is accurate in determining the damage location. The comparison between healthy and damage condition of slab specimen is plotted for both signature have been changed in healthy as well as damage condition. So, we analyze PZT work as a smart material (actuator and sensor) in surface bounded slab. In this way, the structural health monitoring has been done in RCC Slab.
Authors and Affiliations
Vijay Kumar Sonkar
Keywords
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