Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Comparison of FRF-Based Damage Indexes for Cracked Beam
Submission Author:
Tomé Seichi da Nóbrega Guenka , DF
Co-Authors:
Tomé Seichi da Nóbrega Guenka, Marcela Machado, Leila Khalij
Presenter: Tomé Seichi da Nóbrega Guenka
doi://10.26678/ABCM.COBEM2019.COB2019-0178
Abstract
This article presents an evaluation of FRF based damage indexes associated with the spectral element method (SEM). Eight indexes were used: FRAC (Frequency Domain Assurance Criterion), FAAC (Frequency Amplitude Assurance Criterion), GSC (Global Shape Criterion), GAC (Global Amplitude Criterion), Monnier’s and Banerjee’s Damage Index (DI), Average Integration GSC/GAC (AIGSC, AIGAC). These were applied to relate the frequency response functions of variably damaged and undamaged beams. The results were then compared to determine the best-suited indexes for damage detection and size evaluation.
Keywords
Damage Index, Frequency response functions (FRFs), spectral element method, Structural Health Monitoring (SHM)
