| Texto completo | |
| Autor(es): |
de Castro, Bruno Albuquerque
;
Baptista, Fabricio Guimaraes
;
Ciampa, Francesco
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS TODAY-PROCEEDINGS; v. 34, p. 5-pg., 2021-02-19. |
| Resumo | |
Among several structural health monitoring (SHM) systems, the electro-mechanical impedance (EMI) method is an effective failure detection approach in composite components. In the EMI method, damage detection is achieved by comparing the behaviour of piezoelectric impedance signatures, which are related mathematically to the mechanical impedance of the host structure. Although many studies have proved the effectiveness of the EMI method on composites, many practical issues such signal changes caused by noise and vibrations have limited its use in real-life applications. This work presents an experimental analysis of white noise effects on the impedance monitoring of a carbon fibre reinforced plastic composite plate, by applying the correlation coefficient deviation metric (CCDM) and cross-correlation square deviation (CCSD) index on the response signal of a pitch-catch mode piezoelectric transducer. Experimental results revealed that the CCSD was more sensitive to damage detection under noisy inspections. (C) 2019 Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 18/23737-2 - Sistemas de localização de falhas baseados no princípio da impedância eletromecânica e em ondas guiadas livres de linha de base em condições de baixa relação sinal ruído |
| Beneficiário: | Bruno Albuquerque de Castro |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 15/24903-5 - Sistemas de Monitoramento de Integridade Estrutural Baseados na Impedância Eletromecânica em Aplicações com Baixa Relação Sinal-Ruído |
| Beneficiário: | Bruno Albuquerque de Castro |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |