Detección de fallos en dispositivos piezoeléctricos cerámicos en un algoritmo de detención de defectos en estructuras basado en PCA

En el presente trabajo de grado, se describe la metodología empleada para el estudio de las fallas en dispositivos PZT (zirconato titanato de plomo) mediante un algoritmo de detección de defectos en una sección de tubería de acero carbono basado en análisis de componentes principales (PCA) y con con...

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Autores:
Mendes Gallardo, Nelson Javier
Tipo de recurso:
http://purl.org/coar/version/c_b1a7d7d4d402bcce
Fecha de publicación:
2016
Institución:
Universidad Industrial de Santander
Repositorio:
Repositorio UIS
Idioma:
spa
OAI Identifier:
oai:noesis.uis.edu.co:20.500.14071/35051
Acceso en línea:
https://noesis.uis.edu.co/handle/20.500.14071/35051
https://noesis.uis.edu.co
Palabra clave:
Piezodiagnosis
Frecuencia De Resonancia
Resistencia De Resonancia
Desacople
Desconexión
Grietas
Temperatura
Pca
Perdida Cerámica
Pzt
Promedio
Desviación Estándar.
In this present work degree
the methodology for the study of failures devices PZT (zirconate titanate of lead) using an algorithm for damage detection in carbon steel pipelines based on Principal Component Analysis (PCA) under variable environmental temperature conditions is presented. The damage detection is performed using the principle of piezodiagnosis
which analyses guided waves generated by piezoelectric devices
so if a device PZT failure occurs or a defect in the structure changes are identified by statistical indices by the altered response. The main contribution of this work presented
it is to detect damage caused in devices PZT under ambient temperature variation and response characterization of impedance before damage of different references PZT circular ceramic. It establishes a normal working area of the PZT under the influence of ambient temperature variation and a gray area outside the normal working area for the detection of damage. It shows that it can detect most caused damage
and can be identified some of them as a group fault and not as an individual damage. studied and improved in collaboration with University Politecnica de Catalunya.
Rights
License
Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)