Structural health monitoring using carbon nanotube/epoxy composites and strain-field pattern recognition

Erick Giraldo-Pérez, Joham Alvarez-Montoya, Hader Vladimir Martínez Tejada, Julián Sierra-Pérez

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

Structural Health Monitoring (SHM) aims to reduce costs and uncertainties in maintenance of aero-structures and wind turbines blades by using smart sensors. In this work, a Carbon Nanotube (CNT)/epoxy nanocomposite patch was developed for SHM based on strain field pattern recognition techniques in engineering structures. This relies on the piezoresistive capabilities of CNT nanocomposites and on the fact that damage occurrence produces changes in the strain field that can be detected by means of pattern recognition. Experimental tests were carried out by bonding the patch to an aluminum I-beam subjected to different load magnitudes in three-point bending. Resistance measurements were acquired from the patch using a multiplexed impedance tester in order to obtain 64 measurements that are correlated to strains in different directions. Then, the same experimental tests were carried out after inducing an artificial damage. The preliminary results showed that standardization needs to be performed to decouple changes due to the load magnitude from those produced by damage occurrence. In addition, slight changes in the strain field were noted in the standardized data for the damage condition. Future work will consist of implementing pattern recognition techniques to automatically detect such changes associated with damage occurrence and validate the methodology with different kind of damages.

Idioma originalInglés
Título de la publicación alojada3rd joint International Conference on Energy Engineering and Smart Materials, ICEESM 2018 and International Conference on Nanotechnology and Nanomaterials in Energy, ICNNE 2018
EditoresTatiana Perova
EditorialAmerican Institute of Physics Inc.
ISBN (versión impresa)9780735417205
DOI
EstadoPublicada - 17 ago. 2018
Publicado de forma externa
Evento3rd joint International Conference on Energy Engineering and Smart Materials, ICEESM 2018 and International Conference on Nanotechnology and Nanomaterials in Energy, ICNNE 2018 - Milan, Italia
Duración: 22 jun. 201824 jun. 2018

Serie de la publicación

NombreAIP Conference Proceedings
Volumen2004
ISSN (versión impresa)0094-243X
ISSN (versión digital)1551-7616

Conferencia

Conferencia3rd joint International Conference on Energy Engineering and Smart Materials, ICEESM 2018 and International Conference on Nanotechnology and Nanomaterials in Energy, ICNNE 2018
País/TerritorioItalia
CiudadMilan
Período22/06/1824/06/18

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Publisher Copyright:
© 2018 Author(s).

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