International Journal of Smart and Nano Materials
In order to more effectively monitor the health of composite structures, a fuzzy fiber sensor has been developed. The fuzzy fiber is a bundle of glass fibers with carbon nanotubes or nanofibers (CNTs or CNFs) grown on the surface. The nanotube coating makes the fiber bundle conductive while the small conductive path increases sensitivity. The fuzzy fiber sensor can replace conventional metal foil strain gauges in composite applications. The electrical response of the sensor is monitored in real time to measure strain, vibration, cracking and delamination. Continuous monitoring provides instant notification of any problems. Implementation of this sensor network in a composite can increase service life, decrease maintenance costs and greatly reduce inspection downtime.
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Boehle, Matthew; Jiang, Qiong; Li, Lingchuan; Lagounov, Alexandre; and Lafdi, Khalid, "Carbon Nanotubes Grown on Glass Fiber as a Strain Sensor for Real Time Structural Health Monitoring" (2012). Chemical and Materials Engineering Faculty Publications. 23.