An Experimental Study on the Effect of Temperature on Piezoelectric Sensors for Impedance-Based Structural Health Monitoring

Autor(es)

Baptista, Fabricio G. ^[1] ; Budoya, Danilo E. ^[1] ; de Almeida, Vinicius A. D. ^[1] ; Ulson, Jose Alfredo C. ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Fac Engn, Dept Engn Eletr, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SENSORS; v. 14, n. 1, p. 1208-1227, JAN 2014.
• Citações Web of Science: 80

Resumo

The electromechanical impedance (EMI) technique is considered to be one of the most promising methods for developing structural health monitoring (SHM) systems. This technique is simple to implement and uses small and inexpensive piezoelectric sensors. However, practical problems have hindered its application to real-world structures, and temperature effects have been cited in the literature as critical problems. In this paper, we present an experimental study of the effect of temperature on the electrical impedance of the piezoelectric sensors used in the EMI technique. We used 5H PZT (lead zirconate titanate) ceramic sensors, which are commonly used in the EMI technique. The experimental results showed that the temperature effects were strongly frequency-dependent, which may motivate future research in the SHM field. (AU)

• Processo FAPESP: 12/10825-4 - Transdutores piezelétricos aplicados no monitoramento de integridade estrutural: dimensionamento e compensação dos efeitos da temperatura
• Beneficiário: Fabricio Guimarães Baptista
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/02600-5 - Detecção de danos estruturais baseada na técnica da impedância eletromecânica sob variações de temperatura
• Beneficiário: Danilo Ecidir Budoya
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica