How to detect cracks using fiber optic sensors
Using conventional sensors at local measuring points, such as strain gauges, only known cracks can be observed, since their location is unknown before the onset of cracking. The possibility to measure strains continuously using distributed fiber optic sensors (DFOS) offers enormous potential for structural health monitoring. ABSTRACT: Truly distributed fiber-optic strain measurements provide the possibility to detect and quantify cracks in prestressed concrete structures without previous knowledge of the location where cracks are likely to appear.
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