Piezoelectric transducers applied in the structural health monitoring: design and temperature effects compensation

• Grant number: 12/10825-4
• Support Opportunities: Regular Research Grants
• Start date: October 01, 2012
• End date: September 30, 2014
• Field of knowledge: Engineering - Electrical Engineering
• Principal Investigator: Fabricio Guimarães Baptista
• Grantee: Fabricio Guimarães Baptista
• Host Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil
• Associated researchers: Fernando de Souza Campos ; Paulo Roberto de Aguiar

Abstract

The structural health monitoring (SHM) has been of growing interest of the international scientific community in recent years. The purpose of SHM systems is to monitor a certain structure and to detect, preferably during their normal operating conditions, an incipient structural damage, providing a high level of safety and reducing maintenance costs. Among the various possible techniques for developing a SHM system, the electromechanical impedance (EMI) technique is distinguished by using low-cost and small piezoelectric transducers, which makes the technique less invasive and allows the installation of multiple transducers for monitoring large areas of the structure. Although the EMI technique has been studied for decades, some practical issues have limited its implementation effectively. The objective of this research project is to explore two practical issues: the correct design of piezoelectric transducers and the temperature effects compensation. Based on the scientific relevant and technological potential of the proposed project, it is expected to obtain a significant scientific production related to the two themes as well as the advising of undergraduate and postgraduate students, and possibly an orientation for new projects. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DARE DE ALMEIDA, VINICIUS AUGUSTO; BAPTISTA, FABRICIO GUIMARAES; DE AGUIAR, PAULO ROBERTO. Piezoelectric Transducers Assessed by the Pencil Lead Break for Impedance-Based Structural Health Monitoring. IEEE SENSORS JOURNAL, v. 15, n. 2, p. 693-702, FEB 2015. (13/16434-0, 12/10825-4)

DARE DE ALMEIDA, VINICIUS AUGUSTO; BAPTISTA, FABRICIO GUIMARAES. An Experimental Assessment of PZT Patches for Impedance-Based SHM Applications. INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS, v. 7, n. 5, p. 5-pg., 2014-12-01. (13/16434-0, 12/10825-4)

BAPTISTA, FABRICIO G.; BUDOYA, DANILO E.; DE ALMEIDA, VINICIUS A. D.; ULSON, JOSE ALFREDO C.. An Experimental Study on the Effect of Temperature on Piezoelectric Sensors for Impedance-Based Structural Health Monitoring. SENSORS, v. 14, n. 1, p. 1208-1227, JAN 2014. (12/10825-4, 13/02600-5)

MARCHI, MARCELO; BAPTISTA, FABRICIO GUIMARAES; DE AGUIAR, PAULO ROBERTO; BIANCHI, EDUARDO CARLOS. Grinding process monitoring based on electromechanical impedance measurements. MEASUREMENT SCIENCE & TECHNOLOGY, v. 26, n. 4, APR 2015. (12/10825-4)