Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Outlier Identification in Impedance-based SHM
Submission Author:
Bruno Pereira Barella , GO
Co-Authors:
Bruno Pereira Barella, Stanley Washington Ferreira Rezende, João Paulo Moreira Bento, Jose dos Reis Vieira de Moura Jr
Presenter: Bruno Pereira Barella
doi://10.26678/ABCM.COBEM2017.COB17-1487
Abstract
Impedance-based structural health monitoring method is one of the most prominent predictive methods applied nowadays to detect small damages in structures. However, some noise aspects can make difficult the application of the technique in real structures. These noisy sources can be from electrical/connectors or even mechanical disturbances aspects, generating signatures sometimes identified as false positives. In this contribution one aluminium beam was monitored and three conditions of damages (light, medium and heavy) and some noisy conditions was evaluated. By the use of the GESD (Generalized Extreme Studentized Deviate) test a procedure was proposed to evaluate and remove these outliers. Concluding, the test and procedure was able to detect and eliminate the noisy samples from the total set with success and can be a useful tool to work with other recent developments in the online monitoring systems.
Keywords
Outliers, GESD test, Impedance-based Structural Health Monitoring
