Cracks detection in railroad tracks using electromechanical impedance measurements and wave propagation

• Grant number: 22/10174-5
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2023
• End date: February 28, 2025
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Agreement: CONFAP - National Council of State Research Support Foundations
• Principal Investigator: Douglas Domingues Bueno
• Grantee: Douglas Domingues Bueno
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
• Associated researchers: Camila Gianini Gonsalez Bueno ; Daniel J. Inman ; Michael John Brennan ; Rodrigo Borges Santos

Abstract

The present research comprises the development of a new methodology for crack detection in rails combining experimental measurements of electromechanical impedance (EMI) and both flexural and longitudinal waves. Piezoelectric transducers are used for measuring the EMI and waves. The approach considers theoretical investigations to evaluate the wave propagation in beam-like structure considering periodic elements to represent the sleepers. Optimal frequencies will be identified to excite the structure taking into account the cracks position and severity. The proposal includes to develop damage detection indexes considering both EMI and waves. The research project considers a strong interaction between researchers from the São Paulo and Pará States. (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)

SANTOS, RODRIGO B.; BERRES, GABRIEL; INMAN, DANIEL J.; GONSALEZ-BUENO, CAMILA G.; BUENO, DOUGLAS D.. A practical approach to evaluate periodic rods composed of cells with geometric and material periodicity. Journal of Sound and Vibration, v. 553, p. 15-pg., 2023-03-08. (22/10174-5, 18/15894-0)