Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Sensitivity Analysis of Discrete Wavelet (DWT) Based Damage Localization on a Beam-Like Structure
Submission Author:
José Leandro Cardoso Rivera Vila , DF
Co-Authors:
José Leandro Cardoso Rivera Vila, Jhon Goulart, Sergio Henrique da Silva Carneiro, Ariosto Jorge
Presenter: José Leandro Cardoso Rivera Vila
doi://10.26678/ABCM.DINAME2023.DIN2023-0172
Abstract
A numerical campaign is conducted on a beam-like structure to investigate damage localization and the influence of boundary conditions on the efficacy of the method. The objective is to define a unimodal function near the damaged region, to assess the potential for the solution of the damage localization inverse problem. Discrete wavelet transform (DWT) data treatment is performed onto displacement data obtained in beams submitted to transverse static loads applied at selected points over its length. Three boundary condition cases are investigated: Simply supported, cantilever, and double-clamped. The damage localization goal is to determine a region of probable damage. Investigating diverse beam aim at understanding how damage localization is impacted by the boundary conditions of each case. Additionally, the influence of decomposition level, wavelet type, and damage severity, were also studied. The simulated damage is applied to the structure via local reduction of the elasticity module of one element. The method then treats displacement data and reveals the probable region with damage with good precision, The successful preliminary results show good potential for the proposed DWT-based damage localization method.
Keywords
Damage Localization, Structural Health Monitoring, Wavelet Transform
