Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Extrapolation of Autoregressive Models for Structural Health Monitoring in Composite Structures
Submission Author:
Jesse Augusto Dos Santos Paixão , RJ
Co-Authors:
Jesse Augusto Dos Santos Paixão, Samuel da Silva
Presenter: Jesse Augusto Dos Santos Paixão
doi://10.26678/ABCM.MECSOL2019.MSL19-0166
Abstract
This work presents a methodology for damage quantification in composite structures based on the extrapolation of autoregressive models (AR) that are applied to fit the time response signal of Lamb wave propagation in a carbon/epoxy composite plate. The proposed approach uses a damage index based on the residue of identified AR models, which is much more sensitive to the simulated progressive damage - mass increasing - than the temperature changes. An extrapolated learning is established between the damage severity and the damage index calculated from the identified AR models. The results obtained demonstrate the capability of the methodology to be applied for damage quantification in composite materials where we can observe a quantification of the level of damage and future extension of the damage when the severity is increasing.
Keywords
Autoregressive Models Extrapolation, Damage Quantification, composite structures
