Artículos de revistas
Real-time multi-sensors measurement system with temperature effects compensation for impedance-based structural health monitoring
Fecha
2012-03-01Registro en:
Structural Health Monitoring-an International Journal. London: Sage Publications Ltd, v. 11, n. 2, p. 173-186, 2012.
1475-9217
10.1177/1475921711414234
WOS:000300840400005
0534385574959094
Autor
Minist Educ Brazil
Universidade Estadual Paulista (Unesp)
Virginia Tech
Institución
Resumen
This article presents a simple and versatile measurement system for structural health monitoring (SHM) based on the electromechanical impedance (EMI) technique. The proposed system allows real-time data acquisition from multiple sensors and includes compensation for temperature effects, eliminating one cause of incorrect diagnoses in structural monitoring. Besides the low cost compared to conventional impedance analyzers, the hardware and the software are simple and easier to implement than other measurement systems that have been recently proposed. Tests were carried out on an aluminum beam under different temperatures and on an aluminum plate with nine PZT (lead zirconate titanate) patches. The experimental results show conclusively that the proposed methodology is efficient and feasible for real-time SHM.