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The application of embedded into material fiber-optic sensors based on Bragg gratings for strain measurement on the example of a cement sample during the manufacturing stage, under operational loads and upon the appearance and development of a defect is studied in the paper. The integrity and performance of fiber-optic sensors at all stages of the study, as well as the efficiency of strain measurement, have been demonstrated. An approach is implemented to register the appearance and development of defects based on information received from embedded fiber-optic sensors. The approach considered in the study is based on the location of sensors in the vicinity of the expected damage. The results obtained indicate the possibility of using embedded fiber-optic sensors to assess the mechanical state of civil structures.

Strain Measurement and Defect Detection with Fiber-Optic Sensors Embedded into the Cement Sample