Experimental nonlinear damage detection in uncertain nonlinear systems

• Grant number: 17/24977-4
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: August 01, 2018
• End date: July 31, 2019
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Samuel da Silva
• Grantee: Luis Gustavo Giacon Villani
• Supervisor: Michael Douglas Todd
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
• Institution abroad: University of California, San Diego (UC San Diego), United States
• Associated to the scholarship: 15/25676-2 - Robust damage detection in uncertain nonlinear systems, BP.DD

Abstract

The stochastic version of discrete-time Volterra series, identified based on input/output signals, can be used as mechanical-mathematical model in damage detection procedure, considering initially nonlinear systems with uncertainties. The procedure has presented interesting results using simulated data and Monte Carlo simulations. However, the experimental application of the approach is essential to study its performance. This proposal aim the accomplishment of damage detection in structures vibrating in nonlinear regime of motion, even in reference condition, considering the presence of uncertainties and experimental data. The experiments should be performed in the research internship in an initially nonlinear beam subject to crack propagation (nonlinear damage), considering the possible data variation. (AU)

Scientific publications

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

TELOLI, RAFAEL DE OLIVEIRA; VILLANI, LUIS G. G.; DA SILVA, SAMUEL; TODD, MICHAEL D.. On the use of the GP-NARX model for predicting hysteresis effects of bolted joint structures. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v. 159, p. 20-pg., 2021-03-19. (19/19684-3, 16/21973-5, 15/25676-2, 17/24977-4)

VILLANI, LUIS G. G.; DA SILVA, SAMUEL; CUNHA JR, AMERICO; TODD, MICHAEL D.. Damage detection in an uncertain nonlinear beam based on stochastic Volterra series: An experimental application. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v. 128, p. 463-478, AUG 1 2019. (15/25676-2, 17/15512-8, 12/09135-3, 17/24977-4)