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.
Develop a structural sensing composite layer for concrete structures that is capable of providing distributed monitoring capability.
- Exploratory Advanced Research
- Long-Term Infrastructure Performance
- Long-Term Bridge Performance