Fiber Bragg grating sensor system for civil structure monitoring: applications and field tests

There is increasing demand for monitoring the national highway infrastructure. This demand is supported by the fact that in United States alone, the Federal Highway Administration (FHWA) has deemed approximately one half of the 260,000 km of roadway contained in the National Highway System as poor to fair and about 110,000 out of 470,000 bridges as deficient [1].