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Carbon Nanofiber-Network Sensor Films for Strain Measurement in Composites

Published online by Cambridge University Press:  01 February 2011

Nguyen Q Nguyen ,
Sangyoon Lee  and
Nikhil Gupta
Nguyen Q Nguyen
Affiliation:
[email protected], Polytechnic Institute of New York University, Mechaical and Aerospace Engineering, Brooklyn, New York, United States
Sangyoon Lee
Affiliation:
[email protected], Polytechnic Institute of New York University, Mechaical and Aerospace Engineering, Brooklyn, New York, United States
Nikhil Gupta
Affiliation:
[email protected], Polytechnic Institute of New York University, Mechaical and Aerospace Engineering, Brooklyn, New York, United States
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Abstract

A carbon nanofiber-based sensor film is designed and calibrated for force measurement. The sensor is designed for use in structural health monitoring of composite materials. The sensing scheme is based on creating a network of carbon nanofibers on the surface of the composite material. In the experimental scheme a patch of nanofiber reinforced epoxy resin film is developed and adhesively bonded to the laminate. The extension of the sensor film due to the applied force leads to a change in the connectivity of carbon nanofibers in the film, resulting in the change in the resistance of the network. Results show that such sensing schemes have high sensitivity and repeatability. Use of nanofibers can provide a low cost and more efficient alternative to other sensor films that rely on carbon nanotubes.

Keywords

sensorelectrical propertieselastic properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1129: Symposium V – Materials and Devices for Smart Systems III , 2008 , 1129-V04-21
Copyright
Copyright © Materials Research Society 2009

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