Abstract: An inspection system for a metal-reinforced concrete structure is described. The system includes a radio frequency (RF) system configured to be movable with respect to a surface of the concrete structure while transmitting radio signals into the interior of the structure, and receiving reflected radio signals. The system also includes a processor configured to process the reflected radio signals, so as to obtain a focused image of the reinforcement in at least one selected region within the concrete structure. The image corresponds to the physical condition of the reinforcement. A method for determining the condition of a reinforced concrete structure is also described, utilizing the inspection system.

Abstract: A method of monitoring a pipe using a measurement device connected to an optical fiber cable that is wrapped around the pipe along a length of the pipe includes generating a first light pulse such that the first light pulse propagates through the optical fiber cable towards the pipe; receiving, at the measurement device, a plurality of second light pulses reflected from a plurality of different reflection points within the optical fiber cable, respectively, the plurality of different reflection points being located at a plurality of different locations along the length of the pipe, the plurality of light pulses each being reflected forms of the first light pulse; and determining one or more optical path length (OPL) change measurements based on the plurality of second light pulses, the one or more OPL change measurements corresponding, respectively, to the one or more different location along the length of the pipe.

Abstract: An inspection system for a metal-reinforced concrete structure is described. The system includes a radio frequency (RF) system configured to be movable with respect to a surface of the concrete structure while transmitting radio signals into the interior of the structure, and receiving reflected radio signals. The system also includes a processor configured to process the reflected radio signals, so as to obtain a focused image of the reinforcement in at least one selected region within the concrete structure. The image corresponds to the physical condition of the reinforcement. A method for determining the condition of a reinforced concrete structure is also described, utilizing the inspection system.