Structural Health Monitoring for Carbon Fiber/Carbon Nanotube (CNT)/Epoxy Composite Sensor

Sang Il Lee; Dong-Jin Yoon

doi:10.4028/www.scientific.net/KEM.321-323.290

Paper Titles

Optimal Accelerometer Locations for Structural Health Monitoring Using Time-Domain System Identification
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Contribution of Three-Dimensional Trabecular Bone Microstructure of the Proximal Femur to its Mechanical Properties as Assessed by Micro-Finite Element Analysis
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Integrity Assessment for Beam-Like Structures by Continuous Wavelet Transform
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Fatigue Crack Growth Monitoring by Optical Fiber Sensors in Smart Composite Patch Repairs
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Structural Health Monitoring for Carbon Fiber/Carbon Nanotube (CNT)/Epoxy Composite Sensor
p.290

Making Sense of Non-Destructive Evaluation Data with an Artificial Intelligence Approach
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Assessment of Structural Integrity for a Concrete Runway by Seismic Techniques
p.298

Structural Integrity Assessment of Tunnel Concrete Lining by the Resonance Search Technique
p.302

The Effect of Joint Conditions on the Longitudinal and Flexural Wave Velocities of a Rock Mass
p.306

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Structural Health Monitoring for Carbon Fiber/Carbon Nanotube (CNT)/Epoxy Composite Sensor

Abstract:

Structural health monitoring for carbon nanotube (CNT)/carbon fiber/epoxy composite was verified by the measurement of electrical resistivity. This study has focused on the preparation of carbon nanotube composite sensors and their application for structural health monitoring. The change of the electrical resistance was measured by a digital multimeter under tensile loads. Although a carbon fiber was broken, the electrical connection was still kept by distributed CNT particles in the model composites. As the number of carbon fiber breakages increased, electrical resistivity was stepwise increased. The CNT composites were well responded with fiber damages during the electro-micromechnical test. Carbon nanotube composites can be useful sensors for structural health monitoring to diagnose a structural safety and to prevent a collapse.