Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
AN INVESTIGATION ON THE USE OF CARBON NANOTUBE FIBER SENSORS FOR STRAIN MONITORING IN ALUMINUM PLATES
Submission Author:
Guilherme Viotto Sarro , SP , Brazil
Co-Authors:
Guilherme Viotto Sarro, Daniel de Almeida Pereira, Lewton Machado Rodrigues, Domingos Rade
Presenter: Guilherme Viotto Sarro
doi://10.26678/ABCM.COBEM2019.COB2019-1806
Abstract
Structure Health Monitoring (SHM) systems are vital for aircraft operation, and it is becoming a promising technology, being considered for reference certification authorities as FAA (Federal Aviation Administration). Novel techniques for Non-Destructive Inspection (NDI) tasks could be implemented, opening new possibilities for future implementation of in-flight systems to monitor aircraft structures. In order to seek for this possibility, the development and evaluation of new, non-intrusive and lightweight sensors are of capital importance. In this context, carbon nanotube fibers have demonstrated to be highly sensitive to strain and are virtually non-intrusive, being then good candidates to be used as SHM sensors. Therefore, the present work is devoted to the experimental assessment of a sensor based on a single carbon nanotube thread, applied to monitor strains in metallic specimens. The study includes the sensor description, the lamination process and the experimental procedure. The results presented show that the sensor shows high sensitivity and provides good qualitative measurements. However, difficulties are engendered by the occurrence of nonlinear behavior.
Keywords
strain sensor, carbon nanotube yarn, Structural Health Monitoring (SHM)
