Development of Structural Carbon Nanotube-Based Sensing Composites for Rehabilitation of Deteriorating and Fatigue-Damaged Steel Bridges
Structural Health Monitoring has become a viable solution to continuously monitor critical infrastructure components that show distress or are unable to pass current load rating procedures. This research focuses on the development of a structural sensing composite layer for concrete structures that is capable of providing distributed monitoring capability. The layer consists of carbon nanotubes that are deposited on a carrier, which form a continuous conductive skin that is extremely sensitive to changes in strain and the formation and propagation of microdamage and macrodamage. It can be either loadbearing, i.e. the layer represents the reinforcement as well as the sensor, or nonloadbearing, i.e. the layer acts as a sensing skin alone. Distributed sensing allows for increased detectability of forming or growing defects that cannot necessarily be captured with conventional point-type sensors, such as strain gauges or accelerometers.
- Record URL:
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Supplemental Notes:
- Program Information: Exploratory Advanced Research
Language
- English
Project
- Status: Active
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Sponsor Organizations:
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Project Managers:
Munley, Eric
- Start Date: 20130930
- Expected Completion Date: 20180930
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Bearing capacity; Concrete structures; Fatigue (Mechanics); Load factor; Nanostructured materials; Sensors; Steel bridges; Strain gages; Structural health monitoring
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01576048
- Record Type: Research project
- Source Agency: Department of Transportation
- Files: RIP, USDOT
- Created Date: Sep 22 2015 3:48PM