DBPapers
DOI: 10.5593/sgem2012/s06.v2014

THE APPLICATION OF PIEZOELECTRIC TRANSDUCERS IN THE STRUCTURAL HEALTH MONITORING OF REINFORCE CONCRETE STRUCTURES

D. STOJIC, T. NESTOROVIC, N. MARKOVIC
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 2, 641 - 648 pp

ABSTRACT

Increased awareness of the economic and social effects of aging, deterioration and
extreme events on civil infrastructure has been accompanied by recognition of the need
for advanced structural health monitoring and damage detection tools. Today, these
tasks are done by visual inspection and very traditional methods such as x-ray, C-scan,
etc, that are expensive and sometimes ineffective for large-scale structures. In this paper
we summarize the recent pioneering research work in piezoelectric-based smart
aggregates structural health monitoring and their innovative applications in concrete
civil structures. Piezoelectric transducers (PZT) have advantages such as low cost,
simplicity for implementation, quick response, active sensing and availability in
different shapes. One embedded piezoelectric patch is used as an actuator to generate
high frequency waves, and the other piezoelectric patches are used as sensors to detect
the propagation waves. With the existence of cracks or other faults in the structure,
incoming signal from the sensor is reduced or it completely disappears in the case of
failure. We have presented different signal-processing tools such as Wavelet analysis,
Fast Fourier Transform, Hilbert-Huang transform. Furthermore, current software and
numerical research in this area are presented, using finite element method and software
programs such as ABAQUS and ANSYS.

Keywords: structural health monitoring, piezoelectric transducers, fault detection