Eventos Anais de eventos
MecSol 2017
6th International Symposium on Solid Mechanics
Analysis of sensor placement in beams for crack identification
Submission Author:
Marcus Oliveira Filho , PR
Co-Authors:
Carlos Alberto Bavastri, Juan Perez Ipiña
Presenter: Marcus Oliveira Filho
doi://10.26678/ABCM.MecSol2017.MSL17-0045
Abstract
The aim of the present work was to determine the most appropriate locations for installing sensors in beams in order to identify and characterize structural damages. The effect of different sizes and locations of cracks on the vibrational responses of beams was studied through a numerical (computational) model using the finite element model. The results show that, although most of the existing methodologies for identifying and characterizing damages in beams are based on an analysis of natural frequency variations, the vibration modes proved to be more sensitive for this purpose. Through the analysis of this vibrational response, it was possible to point out the most adequate sites for placing sensors aiming at identifying cracks in a beam in clamped-free boundary conditions.
Keywords
vibration modes, Structural Health Monitoring (SHM), modal analysis, harmonic analysis, crack identification
