Title :
Sizing PZT Transducers in Impedance-Based Structural Health Monitoring
Author :
Baptista, Fabricio G. ; Filho, Jozue Vieira ; Inman, Daniel J.
Author_Institution :
Capes Found., Minist. of Educ. of Brazil, Brasília, Brazil
fDate :
6/1/2011 12:00:00 AM
Abstract :
A theoretical and experimental analysis regarding the correct size of PZT (Lead Zirconate Titanate) transducers used in structural health monitoring (SHM) systems based on the electromechanical impedance (EMI) technique is presented. Tests were carried out on aluminum structures using 5A and 5H PZT patches of various sizes. The results show that the sensitivity of SHM systems for damage detection can be optimized if the transducers are correctly sized according to the proposed procedure.
Keywords :
condition monitoring; electric impedance; piezoelectric transducers; PZT transducers; electromechanical impedance technique; impedance-based structural health monitoring; Electromagnetic interference; Frequency measurement; Impedance; Impedance measurement; Indexes; Sensitivity; Transducers; Electromechanical impedance; PZT ceramics; structural engineering; structural health monitoring (SHM);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2010.2098865
