Measurement and signal acquisition techniques from piezoelectric transducers excited with high frequency signals in the structural health monitoring

• Grant number: 18/09312-9
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: September 01, 2018
• End date: July 31, 2021
• Field of knowledge: Engineering - Electrical Engineering
• Principal Investigator: Fabricio Guimarães Baptista
• Grantee: Danilo Ecidir Budoya
• Host Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

The electrical impedance measurement of piezoelectric transducers is one of the most important steps in structural health monitoring systems with damage detection based on the Electromechanical Impedance (EMI) technique. It is a non-destructive technique in which, due to the piezoelectric effect, a relation is established between the mechanical properties of the monitored structure and the electrical impedance of the transducer, allowing structural damage to be detected by measuring and analyzing the electrical impedance. Therefore, the measurement system must be of quality to ensure good repetition between the impedance signatures within the frequency range sensitive to the damage. Many alternative measurement systems have been proposed to replace commercial impedance analyzers because they are most appropriate for field applications and multiple transducer measurements. Studies reported in the literature usually analyze the performance of these systems at low frequency. However, high frequency transducer excitation, typically above 1 MHz, allows detection of incipient damage, requiring the analysis of these measurement systems at high frequencies. Therefore, the aim of this doctoral research is to analyze the main techniques for measuring and acquiring signals from piezoelectric transducers excited with high frequency signals, above 1 MHz. The techniques will be analyzed and compared based on precision, accuracy, speed, energy consumption and performance in conditions of low signal-to-noise ratio. At the end of this research, it is expected to obtain a detailed study of the characteristics of the main techniques of measurement and signal acquisition from piezoelectric transducer, which can serve as a reference for the development of monitoring systems, resulting in the publication of articles in journals with selective editorial policy. (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)

BUDOYA, DANILO ECIDIR; CAMPEIRO, LEANDRO MELO; BAPTISTA, FABRICIO GUIMARAES. Sensitivity Enhancement of Piezoelectric Transducers for Impedance-Based Damage Detection via a Negative Capacitance Interface. IEEE SENSORS JOURNAL, v. 20, n. 23, p. 13892-13900, DEC 1 2020. (17/23157-3, 18/09312-9)

BUDOYA, DANILO; CAMPEIRO, LEANDRO; BAPTISTA, FABRICIO; RIZZO, P; MILAZZO, A. Impedance-Based SHM with High Frequency Excitation Signals of Variable Amplitude and Duration. EUROPEAN WORKSHOP ON STRUCTURAL HEALTH MONITORING (EWSHM 2022), VOL 2, v. N/A, p. 9-pg., 2023-01-01. (18/09312-9, 17/23157-3)

CAMPEIRO, LEANDRO MELO; BUDOYA, DANILO ECIDIR; BAPTISTA, FABRICIO GUIMARAES. Lamb wave inspection using piezoelectric diaphragms: An initial feasibility study. SENSORS AND ACTUATORS A-PHYSICAL, v. 331, NOV 1 2021. (18/13200-1, 17/23157-3, 18/09312-9)

CAMPOS, FERNANDO DE SOUZA; DE CASTRO, BRUNO ALBUQUERQUE; BUDOYA, DANILO ECIDIR; BAPTISTA, FABRICIO GUIMARAES; COVOLAN ULSON, JOSE ALFREDO; ANDREOLI, ANDRE LUIZ. Feature extraction approach insensitive to temperature variations for impedance-based structural health monitoring. IET Science Measurement & Technology, v. 13, n. 4, p. 536-543, JUN 2019. (17/23157-3, 15/24903-5, 18/09312-9)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BUDOYA, Danilo Ecidir. Methods for increasing sensitivity in structural damage detection based on impedance measurement of piezoelectric transducers. 2021. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Bauru Bauru.