Investigation of the effects of damage on wave propagation in plates with piezoelectric transducers

• Grant number: 19/21149-9
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: April 01, 2021
• End date: September 30, 2023
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Douglas Domingues Bueno
• Grantee: Kayc Wayhs Lopes
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
• Associated scholarship(s): 21/11493-4 - Interactions between guided waves and damage in plates when using circular piezoelectric transducers, BE.EP.DD

Abstract

Detect structural damages is currently an important challenge to the engineering community. The field of Structural Health Monitoring (SHM) comprises many techniques, mainly non destructive ones, to detect incipient damage and allow to establish maintenance procedures before a failure. In particular, many researches on this topic are based on post processing the input and output signals, measured for a structure in healthy and unknown structural conditions. In other hand, a limited number of works investigates the interaction between the damage and the waves propagating on the structure due to an input applied by an actuator. In this context, this research is focused on studying the interactions between the damage and reflected and transmitted flexural and longitudinal waves propagating in plates with symmetric and asymmetric damages. Stiffened plates is investigated too. The approach involves the state vector notation to write the waves amplitudes in terms of the plate's physical and geometrical properties. The research comprises to determine the optimal frequencies and investigate the influence of physical and geometrical characteristics of damage using piezoelectric transducers as actuators and sensors. Numerical simulations using state vector approach will be compared with experimental results to validate the findings. (AU)

Scientific publications

(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)

LOPES, KAYC W.; GONSALEZ-BUENO, CAMILA G.; BUENO, DOUGLAS D.. On the Frequencies for Structural Health Monitoring in Plates with Symmetrical Damage: An Analytical Approach. JOURNAL OF NONDESTRUCTIVE EVALUATION, v. 41, n. 1, p. 12-pg., 2022-03-01. (19/21149-9)

LOPES, KAYC W.; GONSALEZ-BUENO, CAMILA G.; INMAN, DANIEL J.; BUENO, DOUGLAS D.. On the modeling of circular piezoelectric transducers for wave propagation-based structural health monitoring applications. Journal of Intelligent Material Systems and Structures, v. N/A, p. 14-pg., 2023-02-01. (19/21149-9, 21/11493-4)

LOPES, KAYC W.; GONSALEZ-BUENO, CAMILA G.; INMAN, DANIEL J.; BUENO, DOUGLAS D.; FROMME, P; SU, Z. On the Symmetric Damage Detection with Flexural Waves using Circular Piezoelectric Transducers. HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS XVII, v. 12488, p. 16-pg., 2023-01-01. (19/21149-9, 21/11493-4)